JPH06508804A - Multi-hull air ride boat - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Multi-hull air ride boat The invention uses a supporting gas cushion placed in a recess in the underside of the ship's hull. This relates to the field of maritime vessels, which have improved operational efficiency by using

The present invention is based on the applicant's prior invention in this field entitled "Air Ride Boat Hull" This is an improvement. In all these inventions, operating speed and load carrying capacity are Pressurized gas into a recess in the underside of the boat hull to increase and also improve stability It is necessary to introduce These improvements often reduce boat weight by about 80 to This is the result of a compressed gas cushion supporting 90%. Improved efficiency at high speeds , primarily as a result of a several-order reduction in drag in the wetted area compared to a normal hull.

The present invention has aspects of the use of multiple, substantially parallel and widely spaced hulls. , represents a significant advantage over Applicant's prior patents. As a result, surface effect ships (SE Stability and resistance in many cases compared to common air cushion supported vessels such as and modify and improve performance characteristics.

Prior art surface effect ships (S　E　S) include thin parallel steel hulls, and these steel ships The body is laterally connected anteriorly and posteriorly by a full span flexible seal; The space thus created is pressurized by air, creating a large lift force.

Therefore, this ship has a single wide rectangular footprint on the water surface.

In the early 1980s, the U.S. Navy began using twin-hulled tortoise-sided hulls, and each steel hull was a common SES. Invested in research into a boat that would As mentioned above, the general SES is Compressed air cushion with full span flexible seals in between fore and aft (bow and stern) It's a boat. According to the US Navy concept, twin SES side hulls cross separated by and connected to a deck or wet deck structure. Ru. Not only are the steel hulls parallel, but the side plates of each steel hull are thin and plate-shaped. It extended to a completely wet deck. This is Virginia 22314, Are Naval Engineers, 1452 Duke Street, Xandria. Naval Engineers Japan, published by the American Society. F.W.Will, published in "Naru", May 1983 issue, pages 301-311. Son's paper, rThe 5 surface Effect Catamaran -Progress in Concept Assessment (Surface effect Catamarans - Advances in Concept Assessment), page 302, Figure 2. I can do things. This paper describes the U.S. Navy's catamaran-type side hull air-cushioned vehicle. - A detailed explanation of the project. This US Navy project for ease is called 5ECAT (Surface Effect CATamaran) The idea behind the acronym O5ECAT is that each steel hull's flexible bow seal flexes in the waves. , the waves travel inside the steel hull recesses until they reach a height where they come into contact with the sea urchins, sea urchins, and tsuki in the recesses. It was possible to pass through without interference. Such an analytical model of 5ECAT Although the research seemed promising, efforts were not made to build an actual scale ship or prototype ship. It seems that it was not.

In addition, in the structure of 5ECAT, regarding the long thin cantilevered steel hull plate, It requires extra structural weight and appears to have very poor off-cushion performance.

In addition to the above problems, each steel hull recess is very expensive, narrow and costly to maintain. A highly flexible seal is used, along with a flexible seal on the inside of each steel hull. S with a normal single channel resulting in an extra vertical movement of the wheel. Compared to the ES structure, the wet area increases and the offshore wet area resistance increases significantly. Therefore, no further research seems to have been conducted.

U.S. Patent No. 1,307.135 is a dual gas fed exhaust gas from an engine. Use Ku Notion Float. The purpose of this patent is to improve sea level performance. . Or, as is clear if you read page 2, lines 96-106 of this patent below: Regardless of whether the sea surface is a water surface or an air surface, the applicant's improvement of the hydroair surface It's in the country. “Also, when the Hydroair surface is flying through the air, of course the exhaust gas pressure A corresponding driving action occurs between the water layer and the air pressure, assisted by This is because the elastic fluid introduced between the water layer and the air pressure has a relatively light density. The reduction in frictional resistance obtained in this case can be measured. Furthermore, this U.S. patent No. 1 , 307, 135, page 2, lines 22-24, it is stated as follows: . [The float is shown supporting the fuselage 8 by struts 9; The airfoil forming the support unit is designated at 10. This support unit 1 0 is actually the wing of the aircraft.

U.S. Patent No. 4,393,802 has a central depressing air cushion and an open rear end. Featuring double outer four sections and side gas cushions at the rear to retain pressure inside Discloses a single hull with no sealing means. U.S. Patent No. 3°191.572 , No. 3.606,857, and No. 4.031,841 It shows the deformation of the hull. However, all these hulls have rear air cushion seals. There is no sealed air space at the rear end. Therefore these hulls cannot seal air pressure in cavities or recesses in the underside of the steel hull.

These hulls are lubricated to lubricate the underside of the steel hull and/or are air lubricated. A ram or blower may be used to facilitate drainage of water from the open rear end of the underside. It simply uses pressurized air. These hulls have a gas scupper in the side hull recess. Since there is no means to maintain pressure, the weight of the ship is reduced by the pressure gas cushion. Unable to support most of the volume.

It is an object of the present invention to take advantage of the advantages of prior art air ride boat hulls while also The purpose is to improve its stability and performance.

The present invention includes a supporting gas cushion disposed within a catamaran-like steel hull; The catamaran-like steel hull is mechanically connected to the hull connection structure and also connected to the supporting gas screen. The system is installed in a boat adapted to be supplied with gas under pressure by means of gas pressurization. one quadrant is formed in each catamaran steel hull, the recess being at least partially defining a pressurized gas cushion, and each of said catamaran steel hulls having a respective having an inner sidewall and an outer sidewall, the boat has a speed of 25 knots or more on calm sea surface; said gas cushion supports most of the boat's weight when operated at speeds of When pressurized to a pressure sufficient to cause , whose length from front to rear, viewed from the horizontal water-contact surface of said boat, is To provide a boat characterized in that the width increases along at least a part of the boat.

Preferably, when the boat is traveling at high speed in calm water, a boat type vessel in which each steel hull has a substantially pointed bow shape when viewed in a plane to accomplish. Steel hulls can be symmetrical or asymmetrical.

Furthermore, in order to increase the width of the air cushion from the front end of the boat to the rear end, or the water contact surface of both steel hull walls increases. The water contact surfaces of the side walls of steel hulls are extending from the front end of the boat and parallel to each other over at least a portion of the rear of the boat . The water contact surface of the outer sidewall of a steel hull shall be wider than the water contact surface of the inner sidewall of a steel hull. I can do things.

Also, the water contact surfaces of the side walls of steel hulls are preferably provided with hard chines at the front. Or it can be flat and rounded at the rear. Further inside the steel hull The lower side of the wall can be higher on average than the outer side of the steel hull. In addition, steel ships The body can extend forward of the main hull. Furthermore, especially when ships are operating at high speeds in rough seas, Mainly to improve the ship's longitudinal stability and reduce wetting of wet decks when You can use the bow. The center bow can extend forward of the steel hull.

Furthermore, the center bow may preferably be of various shapes, such as a deep V-shape or an inverted V-shape. Can be done. Furthermore, to reduce the wetted area on the vertical surfaces of steel hulls when operating in rough seas, A substantially vertical step may be provided for this purpose. Outside air inside this vertical step is sent downward. This vertical step only allows water to be routed externally from the steel hull. It can be tilted to add lift to the steel hull without being sent downwards. Said water At the level of straight steps, the shape of the steel hull is narrower at the rear than at the front, making these steps Reduces the backward pressure of the water droplet hitting the tep. The steel hull is made narrower. Below the stepped level, there is a gas cushion of the entire width. and thus create a full-width lift while at the same time reducing the level of said vertically oriented ventilation step. Demonstrates the benefits of a tapered hull side profile at Bell. It also creates air turbulence on the underside of the wet deck. A flow generator is provided to restrict the air flow below the wet deck, resulting in Lifting force is generated by the aerostatic pressure below the deck. Movable bow and steel hull and/or recess seals. A movable bow seal with a pointed front It can be used with a movable bow and thus provides a simple, low-cost and aesthetically pleasing design. It can be equipped with a fixed wave break-through bow. The movable bow seal concept is a series of contain a seal or element, each seal can follow the water surface, thus can create an efficient gas seal. Bow seal seals itself from the side and subsequent seals can seal previous seals. Preferably, this These movable bow seals have curved or sloped surfaces that accommodate the movement of the trailing seal. In addition, the compressed gas can be reliably sealed in the gas cushion. Movable It is preferred that the rail members be made of as structurally strong a material as possible. these movable This is because the seal does not require the use of flexible materials in its construction. These are possible The advantage of dynamic seals is that they can be connected to the hull using simple means such as hinges. be. Preferably, these optional movable bow seals provide excellent water surface In order to cause running and reduce wave impact loads, it is preferable to have a lower surface shape such as an inverted V-shape. Be prepared. To improve hull stability and break waves below the hull when operating in rough seas. , a second bow-shaped member can be interposed within the gas cushion recess. these The second bow-shaped member of the ship forms an inverted V-shape at its lower part adjacent to the side of the hull, and This improves the stability of the hull at The inner surface of the recess that gets wet can be reduced. Front and rear compression gas cushions In between, a movable seal that is fired downward can be provided. These downward bullets The emitted movable seal consists of a plurality of water contacting ski-like elements. 2nd bow type part The timber is offset more outside the recess than inside to increase the rolling stability of the boat. It can be lowered or lowered. Also assists in gas sealing and controls hull trim and/or structural construction to direct the water flow to the propeller located at the stern. A durable and secure fixed stern seal may include a movable stern seal element. This solid A flat stern seal has a flatter aft side than its forward part and in this way the boat Creates an efficient flat surface for riding waves at the rear end. The underside of the stern seal has a low wave Indicates impact, and at least when viewed from the bottom while driving or in a fisheye view. It also partially forms a V shape. Includes an inset in the stern seal to increase the height of the stern seal. The resistance wetting area can be reduced. Press down against the stern seal inset. source is provided. The fixed structural part of the stern seal is the arithmetic sum of its constituent parts: It extends along most of the width of the section. The fixed structural part of the stern seal crosses vertically across the hull. viewed in plane, inclined to the horizontal along most of its width, and in rough seas Reduce wave impact. By adjusting the gas pressure in at least some of the recesses. It is possible to provide a gas pressure adjustment means that can control the gas pressure. Adjustment of gas pressure in these four parts is Helps maintain the best trim of the boat in rough seas. Said gas pressure control hand Using a controller to control the movement of the stage and thus the gas pressure in the recess I can do that.

This controller receives as input the orientation of the hull and the pressure values in the hull quadrants.

According to a preferred embodiment of the invention, elongated thin air cushions widely spaced from each other are provided. tion hull has much better speed resistance characteristics than a single wide air cushion hull. be lowered or “humped”; However, at very high speeds, a single air Wider hulls with longer sections generally offer less drag. This is partly due to separate steel vessels This is because it requires extra sidewalls at the inner edges of the body, increasing wet zone resistance. Main departure In order to reduce this wetted area effect, we have developed a novel vertical alignment step. used and vented by outside air supplied downward along these steps.

Preferably to reduce drag from splash impact on these steps. The steel hull tapers laterally inwards at the level of these vertical steps. It is preferable to do so.

The preferred construction has a generally pointed bow and cuts at the water contact surfaces of the steel hull. The above objective is achieved using an essentially boat-shaped steel hull with a truncated stern shape. It is something to be achieved. At least one side of the steel hull faces outboard at the aft part of the vessel. open and then parallel for most of the length of this steel hull. Preferred embodiment These steel hulls are assumed to be symmetrical, but asymmetrical hulls can also be used. child Fixed seals and/or or a movable seal can be used.

Another embodiment of the invention provides an air cushion side hull with an inner wall that is thinner than the outer side wall. Use side walls. The reason is that most of the lateral stability moment of the hull is This is because it is given by the outer side wall far from the vertical center plane.

Therefore, from the perspective of lateral stability, the effectiveness of using a wide medial sidewall is limited. , the use of thinner inner sidewalls reduces the wetted area resistance of the hull.

Hard or angular chines at the front to further reduce hull drag. Applicant's research has shown that a structure that transitions to a rear rounded sidewall shape is advantageous. Before The harder chines on the side improve stability during navigation, but the rounded sidewall shape on the aft side makes it difficult to lowers resistance. The rear round side wall shape is generally arcuate.

It is also preferable that the lower surface of the inner side wall ends at a higher level than the lower surface of the outer side wall. . The effect is that the hull resistance is reduced because less of the inner side wall is underwater. . This is because the distance from the center plane of the hull to the inner side wall is small, so during the hull roll. This is because the vertical motion of

As mentioned above, the steel hull has a substantially pointed bow in its preferred embodiment. However, this allows the use of shallow quadrants. This is because the pointed bow of the ship reflects the crashing waves. This is because it is divided into parts and sent to both sides of the steel hull instead of all being placed inside the four parts of the steel hull. Ru. The steel hull of the preferred embodiment has a boat-shaped point in its horizontal waterline. It has a severed neck and a severed stern. This is the above reference, page 11 of the 5ECAT paper, 5ECAT where each steel hull has a rectangular footprint on the water surface as seen in line 306 Different from a boat.

Furthermore, the preferred embodiment having a vertical step in the steel hull is useful for steel hulls operating in heavy seas. Significantly limits the increase in wet area resistance on the outer or sea side of the hull. Said None of the benefits of reducing boat performance and, in fact, stopping the blower system Even so, it exhibits the performance of a normal catamaran hull. This is a relatively shallow gas scoop. The 5ECAT twin air This is because the underside is much more like a ship's hull than the cushion design. This is 5 In the ECAT design, the entire depth of the four sections up to the front and rear wet decks of the steel hull is This is because a flexible seal was used. This 5ECT design uses parallel thin side plates. These steel hulls extend up to the wet deck to form steel hulls on both sides. ing. Therefore, the 5ECAT design functions similarly to the Lilybud with the blower stopped. It is clear that it worked.

Furthermore, dividing each part of the recessed portion with a seal provides various advantages. These stickers are Reduces the amount of paint on all four parts when driving in rough seas. Especially when using an inverted seal design. Reduces the amount of painted surface when used. Such a shape is the lowest on both sides of the steel hull. This is because it has a point and therefore causes waves to descend from the vertical surface of the recess along the inverted ■-shaped seal. be. In addition, the recessed seal allows the front and rear recesses to be made smaller, making these The recess can be suitably pressurized to improve the trim of the vessel. Different pressures is carried out using pressure control valves, these valves detect the hull orientation and the pressure in the recess. commanded by the controller on board the ship.

Applicant's research on the use of separate forward and aft gas cushions in a steel hull According to It is preferable to place the gas cylinder between these gas cushions.

This effectively results in a movable seal that follows the water. The front gas cushion is the rear gas cushion. exerts a downward force on the seal when pressurized at a pressure greater than the pressure applied to the seal. movable The reason for the need for seals is that the forward and aft parts of the side hulls follow the pattern of the waves. This is because the central part of the side hull follows the up and down movement of the waves in the air cushion.

In this embodiment, the center bow located inside the side hulls, generally forward, is visible. Shows significant additional benefits. Firstly, if the center bow extends forward, the plane and side When viewed from above, the pointed prow of the ship can be seen. Second, the center bow of the boat in rough seas Since it prevents the bow from pitching down, wave riding performance is improved. Third, the center bow is The center bow prevents wet deck slumping when navigating in very rough seas. Stop. The center bow lifts the front of the boat when a big wave hits, and then moves the wave away from the wave. This is because it will distract you from the attack.

In the attached figure, FIG. 1 is a right side view of a boat according to the invention.

FIG. 2 is a bottom view of the boat of FIG. 1.

Figure 3 shows the boat in rough seas with its bow pitched up, similar to Figure 1. FIG. 3 is a starboard side view of the boat.

FIG. 4 is a central sectional view taken along line 4--4 in FIG.

FIG. 5 is a sectional view taken along line 5--5 in FIG. 2.

FIG. 6 is a sectional view taken along line 6--6 in FIG. 2.

FIG. 7 is a plan view of the boat shown in FIG. 1 with the deck removed.

FIG. 8 is a cross-sectional view taken along line 8--8 in FIG. 4.

FIG. 9 is a front view of the boat of FIG. 1.

FIG. 10 is a rear view of the boat of FIG. 1.

Figure 11 is taken along line 11-11 of Figures 2, 5, 6 and 7. FIG.

Figure 12 is a cross-sectional view taken along line 12-12 of Figures 2, 5, 6, and 7. It is.

FIG. 13 is a sectional view taken along the line 13--13 in FIG. 2.

FIG. 14 is a perspective view of the seal of FIG. 13.

Figure 15 is the intermediate movable seal on the starboard side hull taken along line 15-15 in Figure 2. FIG.

FIG. 16 is a cross-sectional view taken along line 16-16 of FIG. 2 of FIG. 16;

FIG. 17 is a cross-sectional view taken along line 17--17 in FIG.

FIG. 18 is a cross-sectional view taken along line 18--18 in FIG.

FIG. 19 shows the right side of another embodiment of a boat with a forward projecting elongated side hull bow. It is a side view.

FIG. 20 is a bottom view of the boat of FIG. 19.

FIG. 21 is a cross-sectional view of the boat of FIG. 20 taken along line 21--21.

FIG. 22 is a cross-sectional view of the boat of FIG. 20 taken along line 22--22.

FIG. 23 is a cross-sectional view of the boat of FIG. 20 taken along line 23--23.

FIG. 24 is a cross-sectional view of the boat of FIG. 20 taken along line 24--24.

FIG. 25 is a cross-sectional view of the boat of FIG. 20 taken along line 25--25.

FIG. 26 is a cross-sectional view of the boat of FIG. 20 taken along line 26--26.

FIG. 27 is a cross-sectional view of the boat of FIG. 20 taken along line 27--27.

FIG. 28 is a cross-sectional view of the boat of FIG. 20 taken along line 28--28.

FIG. 29 is a cross-sectional view of the boat of FIG. 20 taken along line 29--29.

FIG. 30 is a perspective view of a typical shape of the intermediate movable seal element and the seal hinge pin. . Also FIG. 31 is a perspective view of the intermediate seal element and its actuator.

Referring to the accompanying figures, especially Figure 1, this figure shows calm water as shown by the water surface 34. A boat 37 is shown running on the water surface. Starboard side hull 95, starboard side hull outer wall 113 , side hull chines 42, main hull top chines 72, main hull center bow 38, deck line 4 6, the stern 97, the propulsion device 131 adjacent to the water surface 36 (in this case, the water surface propeller system A vertically oriented vent step section 47 is shown. Said The step section 47 in this case has an inclined step line 48 and a tapered vertically oriented Step 49 is included. The vertically oriented ventilation step 47 is clearly visible when looking at the sea level 34. Thus, the water-wetted area of the starboard side hull 95 is reduced. This reduction in wet areas This is even more noticeable when driving in rough weather.

FIG. 2 is a bottom view of the boat 37, showing the hull connection structure 99, the lower side of which is A wet deck 41 includes an air turbulence generator 39. Preferred embodiments of the present invention In the embodiment, the connected hull structure 99 basically includes the center bow 38, the port side hull 9 6 and the starboard side hull 95. Also, wet deck 41 is a ship. It is defined by the stern 97 and the upper chines 72,73 of the main hull. The center bow 38 is It is centered on the vertical center plane 32 of the boat.

However, more than one center bow 38 can be used and the center bow 38 It does not need to be centered on the vertical center plane 32. The boat 37 has a vertical center plane 32 and a port side. It has a hull vertical center plane 33 and a starboard side hull vertical center plane 98.

Furthermore, a deck line 46, a propeller 131, a steel hull outer chine 42, an inner chine 43, steel hull outer keel 44 and inner keel 45, port side hull inner side wall 11o1 left Outer hull outer wall 111 on the starboard side, inner inner side wall 112 on the starboard side, outer outer side wall 11 on the starboard side 3. Pressurized gas supply duct 84, steel hull front recess 58, intermediate recess 59, rear A recessed portion 6o is shown. Any number of recesses can be provided in either steel hull 95 and 96. and other hulls, such as the center hull 38, can also include roll-down recesses if desired. Ru.

Also, as shown in Figure 2, there is a fixed inverted-shaped recess in the port side hull, and a bobbin. A movable seal relative to the port hull and a fixed seal assembly in the port hull are shown. It is. It is generally preferred to use the same seal construction in both steel hulls. However, the assembly as shown also works very well. Fixed seal is in front Seals 90°: intermediate seal 89 and rear seal 88. Boat vertical cross section As can be seen in the figure, the inclined seal portion 100 has a horizontal lower part. Seal portion 101 is visible. Sloped front side 100 provides best surfing in rough weather However, since the horizontal lower surface 101 gives the best hydraulic efficiency, such combinations are used.

Port aft seal 88 directs gas under pressure from recess 60 or other source to conduit 94. It includes an inset 93 that is fed through. Supplying compressed gas to the inset 93 , a gas layer is formed in this inset 93, thereby forming the port aft seal 8. 8 to reduce the wetted area and thus reduce the wetted area resistance.

An optional sealing means in the starboard side hull 95 is the forward movable seal 51.5. 2.53 and 54, intermediate movable seal 55, 56 and rear movable seal 91. Ru.

Substantially vertical parallel starboard side hull adjacent to these intermediate and aft movable seals The inside surface 57 is used, and this starboard side hull surface is used as the forward side after such a parallel section. mutually adjacent to side movable seals 51.52.53.54.55 and/or 56 is concentrated on. The functions of these movable seals are explained in detail below. , its primary purpose is to provide a better seal than the fixed seal shown on the port side hull. It's about to happen.

The starboard side hull 95 is cut in its entirety and has a pointed bow as shown. I can do things. In an optional embodiment of the invention, the bow of the steel hull is partially cut to remove most of the sharp center bow in front of the movable seal 51. You can have some or none at all.

Figure 3 shows a boat operating in severe rough weather as indicated by water level 34. It is a starboard side view of No. 37. In this case, the center bow 38 is pitched up. right The forward movable seals 51, 52, 53 of the side hull 95 extend below the keel line 44. This helps seal the gas under pressure.

Figure 4 shows the elevation of the wet deck 41 aft of the center bow 38; The center bow 38 prevents waves from entering the wet deck 41. wet deck 41 is actually the lower surface of the hull connection structure 99. Arrow 4 also indicates the flow of air. 0, the air turbulence generator 39 and its effect on the airflow can be seen. It will be done. The turbulence generated in this way reduces the airflow cross-section and therefore this turbulence By increasing the aerostatic pressure in front of the generator 39 against the wet deck 41 Increases the lifting action of air. Of course, as a result, the overall efficiency of the boat 37 increase Furthermore, FIG. 4 shows the forward and rear compressed gas ducts 82 and 83. has been done.

FIG. 5 illustrates the operation of the port side hull 96 gas pressure system and its function. this The gas pressure system includes a gas pressure device or blower drive motor 69 and a front blower 67. , front side gas flow control valve 75, gas introduction duct 86 and gas discharge duct 85, rear side It includes a blower 68 and a trailing gas flow control valve 76. In this case, the front blower 67 has a front recess. 58 and the intermediate recess 59, and the rear blower 68 supplies pressure to the rear recess 60. Supply lower gas.

The gas pressure in the recess 58, 59, 60 can be adjusted and in this way the control valve Use 75 and 76 to significantly reduce boat pitch, roll and heave. I can do things. The operation of these valves is controlled by a controller 79. As its input, the controller passes the connecting wire 92 from the pressure transducer 87. and take four internal pressure readings. In principle, the controller 79 has Hull orientation data (vertical g-acceleration from the acceleration needle (not shown). Receive degree value. The controller 79 receives this information and controls each gas flow. Sends a signal to control valves 75 and 76. The function of this controller is to adjust the pitch down of the bow. If this occurs, the controller opens the front control valve 75 and throttles the rear control valve 76. move. Such action increases the gas pressure in the front recess 58 and intermediate recess 59, causing the rear Bringing the boat 37 to its normal trim by reducing the gas pressure in the recess 60 Bring it closer. These gas flow control valves can be connected to blowers 67, 68 and recesses 58, if desired. It can be placed between 59.60 and 59.60. Also, these valves perform the same operation. In order to Although it is possible, such a structure is considered inefficient as it wastes blower output. Ru.

Also, as shown in FIG. 5, an inset 93 is provided in the fixed stern seal 88, This inset has a nearly horizontal lower surface and is supplied with compressed gas from the rear recess 60. Ru.

A stationary intermediate seal 89 and a stationary pre-seal 90 are also shown. Also sloped seal Also shown is surface 100. Gas flow is indicated by arrows 74.

Figure 6 shows the pitch of the bow that occurs when running in rough weather as indicated by sea level 34. It is a sectional view showing the boat 37 in an up state. intermediate when the hull rises out of the water. Movable front seal 51 used as a seal to limit gas leakage from four parts 59. The advantages of 52.53.54 are clear. In this embodiment, the front recess 58 is It is seen that it leaves the sea level 34 and thus loses its pressure gas until water re-enters.

Also, intermediate movable seals 55 and 56 rest on the water line 35 of this recess. child The hinge bins 50 of the movable seals 51 and 55 are visible only in the hull section. a Also shown is a rear movable seal 91 controlled by actuator 62. this The rear movable seal 91 controls the level of water in the rear recess 60 relative to the propeller 131. to help direct the water flow.

FIG. 6 also shows a gas compression control system. This system uses a blower drive motor 6 1, front blower 67, front gas flow control valve 77, rear blower 68, rear gas flow control a valve 78, an inlet gas flow duct 86, an exhaust gas flow duct 85, a gas flow 74; It has a pressure transducer 87, a controller 79, and a connector 92.

Is the operation and function of this gas pressure system essentially the same as that shown in Figure 5? Please refer to the above description. However, in FIG. 6, the controller 79 The movement of the movable seals such as the rear movable seal 91 is controlled by the operation of the actuator 62. You can control it. Furthermore, in FIG. 6, the main drive motor 130, the center bow 3 8 and deck line 46 are shown.

FIG. 7 is a plan view of the preferred gas pressure system layout. Port blower 6 5.66 is driven by the port blower motor 61 to direct gas flow to these blowers. is controlled by gas flow valves 75,76. Starboard blower 67.68 is blower drive Driven by motor 69, airflow to these blowers is controlled by valves 77 and 78. controlled by

Intermediate ducts 82 and 83 are also provided, and these intermediate ducts are connected to the port blower motor. Sends compressed gas to the port side hull 96 when the tank 61 fails, or vice versa. carry out the action. Valves 80.81 are generally arranged in these connecting ducts 82.83. It is placed. The operation of gas flow control valves 75, 76, 78, 79, 82, 83 is is coordinated by controller 79 via controller 92 .

FIG. 8 shows a vertical orientation similar to that illustrated in FIGS. 1, 3, and 4. The operation of the air delivery step section 47 is shown. These step sections 47 are located on the side hull (also significantly reduces the wetted area of a single hull) and thus increases the resistance of the entire hull wetted area. reduce Inside the port side hull (lower side in Figure 8) is a vertically oriented air supply step section 4. 7, it is substantially parallel to the vertical center plane 33 of the port side hull, but the outside is It tapers inwardly towards the center plane 33 as it goes towards the stern 97 . this The reason why the sides taper inward is that the horizontal plane adjacent to the hull water surface 36 Thus, as shown, from the previous vertical alignment step 49 to the subsequent vertical alignment step 49 because it reduces or eliminates the backward drag force caused by water impingement on the pool 49. It is. Of course, vertically oriented step sections 47 and/or inward facing hull sides Tapering can and can be done on one or both sides of the side hull If so, it can also be carried out for the center bow of other areas.

FIG. 8 also shows that in a preferred embodiment of the invention, the outer chine 42 is substantially parallel to in 43 and both substantially parallel to vertical centerline 33; This shows that they are parallel to each other. It will become clear if you examine Figures 1, 3 and 4. As such, in a preferred embodiment of the invention, the vertically oriented vent step section 37 is It actually stops at or above chine 42,43.

This allows for a wide and efficient gas cushion and/or hull on the water surface. A footprint of the structure is obtained.

FIG. 9 is a bow view of the boat 37, showing that the boat of the present invention is wet from the sea surface 34. This shows that there is a very high separation distance to deck 41.

Figure 10, similar to Figure 11, shows the amount of water that comes out of the hull when driving at high speed on a calm sea surface. Shows the spray pattern.

FIG. 11 is a cross-sectional view through the rear blower 66,68.

Blower exhaust gas flow duct 85, connecting gas flow duct 83, connecting valve 81, and gas flow duct 85, connecting gas flow duct 83, connecting valve 81, and 74 can be seen while the gas is being washed away.

Further, FIG. 11 shows a movable seal member of the starboard side hull 95 having an inverted V shape on the lower surface. 55 is shown. In principle, the intermediate movable seal 55 is located substantially parallel to the starboard side hull 55. or between the vertical inner surfaces 57. In general, the best waves in rough seas In order to obtain good riding performance, at least a portion of the lower surface of the movable seal member must be It is preferable to have a certain shape. Considering the port side hull 96, the top of the rear recess 60 A favorable inverted V shape can be seen all the way to the sides. In a preferred embodiment, the recessed surface is It is offset to have more material on the outboard than on the inside.

This is done intentionally. This kind of bias can cause the boat's stagnation to deteriorate when it comes into contact with water. This is because it provides more lift on the outside, which adds roll stability (i.e. That is, the lift force is further outboard from the vertical center plane 32 of the boat, and the roll restoration mode ).

FIG. 12 shows a cross-section taken through the front gas flow control valve 75,77. Also the 12th The figure shows that in stormy weather, the recess 58 of the port side hull 96 separates from the sea surface, thus causing the reduction gap. The movable seal 52 on the starboard side hull 95 is vented to the keel 44. 5 and thus at least partially seal the gas leak. A state in which the side hull 95 maintains gas pressure is shown. In a preferred embodiment , as seen on the starboard side hull 95, the front movable seal 52 is substantially attached to this starboard side hull. It operates between the side wall surfaces 56 which are parallel to each other.

Also, FIG. 12 shows a section of the upper side of the recess 58 in the port side hull 96, similar to FIG. 11. Indicates a side-by-side arrangement. The outward offset of the four sides is not necessary for the function of the invention; Please note that a symmetrical recessed inner surface or an offset inner surface of the four parts can also be used. Good morning. Additionally, for the present invention to function, the sides of the steel hull must be symmetrical about the vertical center plane. Although certain things are preferable, they are not necessarily necessary.

As is clear from Figures 5, 6, 11 and 12, the average depth of the recesses is Distance above keel 44.45) is from keel 44.45 to wet deck 4] It is much smaller than the depth. This is the 5ECAT explained in "Background of the Invention" This is a very important feature of the present invention that is different from the above. In 5ECAT, wet device The depth of the ridge and the depth of the recess are the same. In 5ECAT, the waves are high on the wet deck. front and rear flexures to allow these waves to pass virtually without interference as long as the Make use of the full height of the sex seal. In a preferred embodiment of the invention, each wave separated by a prow-like point at the forward end of the steel hull, thus directing waves away from the recesses. and send it to the outside. Therefore, the present invention is designed to reduce the depth of the wet deck by half or less than half the depth of the wet deck. The average recess depth can be used. In fact, in many use cases of the present invention Twenty-five percent of the wet deck depth is considered a reasonably effective percentage. According to the present invention There are various advantages of shallow recesses. That is, (1) shallow draft with blower off, ( 2) Strong and light construction, and (3) Excellent surfability and operation with the blower turned off. sex.

Figure 13 shows the front movable seals 51.52 and -53.54 extending below the starboard side hull 95. It shows a state in which the sea surface 34 is present and in contact with the sea surface 34. These front movable seals are located in the steel hull recess 58. It is attached to the structure by hinge pins 50. The other bottle 50 is this Since the structure does not pass through the centerline of the steel hull, only the forwardmost movable seal 51 is hinged. It has a pin 50.

The operation of the last movable seal 54 is controlled by an actuator 62. Although shown as such, the actuator is not required for the functionality of the present invention.

To provide restoring force to any one or all of the movable seals, springs, springs, etc. Stems, dashpots, etc. (not shown) can be used.

FIG. 14 shows the front movable seal 51, 52, 53, 54 in its retracted position.

As shown in this preferred embodiment, the movable seals only overlap front to back. They also overlap at their lateral edges. This structure has four parts separated from the water surface. This is preferable because it prevents gas from leaking from the sides when Figure 14 also shows the movable seal hinge. The best mounting in the form of a dibin 50 shows the means. Hinge pin 50 connects each seal 52.5 Be careful not to pass through 3.54. If penetrated, it will interfere with the movement of each seal. It is from.

FIG. 15 shows the intermediate movable seal 55,56 located within the rear recess 60. this In this case, these movable seals 55, 56 follow the four-part water line 35 and are retracted. Ma A movable seal hinge pin 50 is shown. These movable seal structures are closed It includes a chain cell foam filling 70 and a skin covering 71. This structure is very It is lightweight and has a strong movable seal structure that is impermeable to moisture.

In a preferred embodiment, the filler material 70 is a closed cell plastic foam. This is because the system is used. Preferably this structure is used in the manufacture of all moving seals. However, other means of seal construction may be used, including flexible seal materials. Wear.

FIG. 16 is used to locate the rear movable seal 91 on the starboard side hull 95. The actuator 62 shown in FIG.

It should be noted here that in the embodiment of the movable seal 91 a specific shape is given. must be considered.

Figure 17 shows an optional dashpot damper or shock absorber. bar 63 and the rear movable seal 91 of the starboard side hull. Reduces water impact load during stormy weather In order to reduce this, a special shape is given to the lower surface of the rear movable seal 91. figure A simple spring (not shown) may be used in conjunction with or in place of the buffer dashpot 63 shown. ) or other stress-shifting means can be used.

Figure 18 shows the use of a simple gas spring pressure bellow to control position in the starboard hull 95. A preferred embodiment of the movable rear seal 91 used is shown. In this embodiment, the actual The parts that come into contact with the water are plate-like parts of fiberglass or other materials. Ru. The advantages of using gas spring bellows are (1) gas under pressure already exists on the ship; (2) The gas bellow not only acts as a buffer member, but also acts as a (3) a gas pressure valve that controls the gas pressure in this gas spring bellows 64; (not shown), the controllers of FIGS. 5, 6 and 7 The movable rear seal 91 can be placed using the outputs of the movable rear seal 91.

19 and 29 extend very far forward, as seen on the starboard side hull 95. 3 shows an embodiment of a boat 37 with an elongated steel hull. This structure lasts longer. Gives you the benefits of a streamlined steel hull and surfing quality in rough seas. The bow of a steel hull is practically , because instead of riding on the waves, they plunge into them. This embodiment The steel hull chines 42, commonly called hard chines, terminate in the center of the hull. ing. This is because the outer wall 113 of the hard chine side hull is directed toward the center of the hull. This is because it becomes a smooth round surface. This structure improves stability at the bow and This results in a decrease in resistance.

FIG. 20 shows the bottom of the boat 37 of FIG. 19. The port side hull 96 is also the starboard side hull 9 5 also has a front recess 58 and a rear recess 60, and these recesses are connected to the movable seal member 103- 108 and each of these movable seal members is attached to a hinge pin 50. Therefore, it is installed. The compressed gas enters the front recess 58 through the gas exhaust opening 84. The gas is then injected along the flow path 74. Under the side hull gas cushion rear seal Extending from side 88 are ramps 115,116. Inner chine 43 and inner side hull The side keel 45 connects the starboard side hull inner wall surface 112 and the port side hull outer wall surface 113. define. In this embodiment, the sidewalls transition from flat to rounded towards the stern. Therefore, the chines are fused from the center of the hull to the stern. port side hull The same applies to the inner wall surface 110 and the outer wall surface 111.

As shown in FIG. 20, a water jet inlet 102 is provided. This figure 20 shows an asymmetrical side hull and air cushion shape, with a substantially straight port side It has a hull and starboard hull sidewalls 110 and 112. As shown in Figure 2 above. Although symmetrical sidehull bow structures are preferred, symmetrical or asymmetrical sidehull shapes are preferred. It can be used arbitrarily. A symmetrical or partially symmetrical side hull shape It splits the wave on both sides of the tip, but an asymmetrical side hull like the one shown in Figure 120 splits the wave entirely. deflect to the outside.

A symmetrical side hull therefore exhibits the best surfability in rough seas.

FIG. 21 shows the bow of the side hull plunged into the waves below the sea level 34. child In this condition, the tip of the side hull does not ride on the waves, but instead pitches down into the waves. is on. This ensures smooth surfing. If the boat is pitched as shown When in the down position, the front gas cushion automatically becomes more pressurized than the rear gas cushion. and correct it to a horizontal position. In this way, air is supplied to the front blower 65 on the port side hull. The pre-control valve 75 that supplies the air is automatically fully opened, and the post-control valve that supplies the 76 is at least partially closed. As a result, the gas cushion in the front recess 58 Maximum pressure is applied to the gasket in the rear recess 69, and minimum pressure is applied to the gasket in the rear recess 69. is added to restore the horizontal attitude of the hull 37.

A movable seal member 106 that rides on the air cushion water surface 35 and the like are attached to the front and rear of the side hull. Preferably, the recesses 58, 60 are arranged between air cushions. Front recess 58 The air cushion of the rear recess 60 is higher than the air cushion (movable seal at 1 o'clock). To keep the member in place, generally It is necessary to use means that Additional gas cookers in either side hull if desired. Please note that the recess can be used.

FIG. 22 shows the shapes of the front end portions of the port side hull 95 and the starboard side hull 96. Each It can be seen that the angle of the bottom side of the plane with respect to the horizontal is smaller than the angle of the top side. this is a ship Since the upward force is greater than the downward force of the neck, the hull 37 pitches down from the bow. Figure 23 shows the front cross-sectional shape of the hull 39. Optional center ship located forward of the wet deck connecting the side hulls Neck 38 is shown. The forward end portions of the outer side walls 111 and 113 of the port and starboard hulls are external) - a relatively flat section connected to the outer keel 44 of the side hull and the chine 42; It has a surface. The inner walls 110 and 112 of the port side hull and starboard side hull are very thin. , forming a knife-edge cutter to create minimal resistance.

Figure 24 shows the starboard and port rear blowers 66 and 68, and also shows whether these blowers are movable. A structure for supplying compressed gas to the rear side of seal members 103-108 is shown. These are possible The dynamic seal members are each attached to the hull 37 by hinge pins 50.

Air passes through the starboard and port control valves 76, 78, as shown by arrow 40, to the rear blower. 66, 68 and discharged as shown by arrow 74.

In this example, since the hull 37 is sailing on a flat sea surface, the movable seal member 103-108 are flat and rest on the gas cushion water surface 35. these There is a vertical movable sealing surface 57 adjacent to the movable sealing member.

Further referring to FIG. 24, the side walls 111.11 of the port side hull and starboard side hull The lower end portion of 3 preferably has a more rounded shape than the front portion of FIGS. 22 and 23. have This transition from front, angular hard chines to rear and rounded surfaces The row provides excellent pitch stability in the front and hydraulic efficiency in the rear. Also, The outer side walls 111, 113 of the port side hull and starboard side hull are the same as those of the port side hull and starboard side hull. Note that it is wider and deeper than the inner sidewalls 110, 112. this is Resulting in maximum lateral stability and minimum drag.

FIG. 25 is a sectional view similar to FIG. 24, but in this FIG. is rolling to starboard. In this case, the movable seal members 103-108 are They follow the water surface 35, so they are each inclined. For example, Figures 2 and 5 Instead of a fixed seal on the port side of the hull, such a movable seal member is It is preferable to place it between the two sessions. These movable seal members are installed inside the steel hull or or the gas cushion water surface 35, but the fixed seal cannot be subordinated. Ru. Other members in FIG. 25 are similar to those in FIG. 24 and will not be described in detail. .

Figure 26 shows the rear part of the bow section and the intermediate movable seal member of Figures 24 and 25. It is a hull cross-sectional view. For steel hulls with only fore and aft gas cushions, possible It is desirable that the dynamic seal member be located approximately at or slightly in front of the waterline length of the steel hull. stomach.

The inner side walls 110 and 112 of each of the starboard and port hulls are the outer side walls 111 ．． Note that it is thinner than 113, and each lower end water contact surface ends high. Must. This provides maximum hydraulic drag and maximum roll stability. . This will be further explained with reference to FIG. 27 below.

In this embodiment, the inner surface 115 and outer surface 116 of the steel hull sidewalls are inclined inwardly. You have to be careful that it's slanted.

Figure 27 is a view similar to Figure 26 except that the hull is rolling to starboard. child In a preferred embodiment, each of the starboard and port hulls is The inner sidewalls 110, 112 of each are thinner than the outer sidewalls 111, 113, and each Care must be taken that the lower end of the water contact surface ends high. the result, Less resistance from the inside wall of the ship. In the rolling state shown in Figure 27, the port side hull The gas cushion water surface 35 of the section is determined by the inner and outer side walls 110,111. You must be careful about what is specified. In addition, the starboard side hull gas cushion The water surface 35 is at a lower level, thus creating a higher pressure, causing maximum pressure from the starboard hull. Care must be taken to create a corrected lift moment.

FIG. 28 shows a preferred inverted V-shaped stern seal. Inner and outer inclined surfaces 11 of the recess It must be noted that the angle of 5.116 is further increased. Also, this As a result of the upward extension of these surfaces 115 and 116, these surfaces at the apex of the desired inverted V shape has been encountered. The inclined surfaces 115 and 116 of these four parts are directly or as shown in the figure. An inverted V-shape is defined as an inverted V-shape that meets the sea urchin on its extension line.

It is also a desirable feature that this apex is below the deck line 46 of the hull 37. and at least above most of the aft sealing recess, there is a good sealing wave in rough seas. Contains riding characteristics.

FIG. 29 is a cross-sectional view of the gas recess stern seal.

The seal has a horizontal flat surface 88 over almost its entire length. At apex 114 You can see the small inverted V-shape that you encounter. As an optimal low resistance structure, this cross section is There is a transition to a substantially flat sealing surface 88 over its entire length as shown in FIG. Ma In addition, from the viewpoint of minimum high-speed resistance, the inner side walls 110.1 of the port and starboard hulls 12 is preferably fused to the sealing surface 88.

Figure 30 shows typical intermediate movable seal members 106, 107, 108 and seal 5 shows the structure of a digital bin 50.

In this case, the movable sealing member has different undersides, such as when following an irregular water surface. is at the level of Downward force elements such as springs as shown in Figure 21 are simplified in the drawing. Not shown for this reason.

FIG. 31 shows a single movable seal member 106 and hinge bin 50, which structure By the spring 109 and the dashpot or buffer 63 fixed to the hull 37 It is biased and buffered. The shock absorber 63 and spring 109 may be used alone or in combination as shown. When used together, a good hand that creates an additional downward force on the movable seal member 106. However, other means can also be used. These are shown in Figure 16, Figure 17 and and the stress generating device shown in FIG. 18, but are not limited thereto.

Continuation of front page (81) Designated countries EP (AT, BE, CH, DE.

DK, ES, FR, GB, GR, IT, LU, MC, NL, SE), 0A (BF , BJ, CF, CG, CL CM, GA, GN, ML, MR, SN, TD, TG ), AU, BB, BG, BR, CA, C3, FI, HU, JP.

KP, KR, LK, MG, MN, MW, No, PL, RO, RU , S.D.

Claims (155)

[Claims] 1. said catamaran including a supporting gas cushion disposed within the side hull of said catamaran; The ship-like side hulls are mechanically connected to the hull connection structure and also have the support gas cushion. In a boat configured to be supplied with gas under pressure by means of gas pressurization, A recess is formed in each catamaran side hull, said recess being at least partially defining a compressed gas cushion on the inner side of each of said catamaran side hulls; a wall and an outer side wall, the boat has a speed of 25 knots or more in calm seas; The gas cushion supports most of the boat's weight when operated at a recess in at least one of said catamaran side hulls when pressurized to a sufficient pressure; from the front to the rear, as viewed from the horizontal water-contact surface of the boat. A boat characterized by increasing width along at least part of its length. 2. said catamaran including a supporting gas cushion disposed within the side hull of said catamaran; The ship-like side hulls are mechanically connected to the hull connection structure and also have the support gas cushion. is supplied with compressed gas by a gas pressurizing means, and the support gas cushion is A boat constructed to be pressurized to a pressure sufficient to support most of the weight of the boat. , each of the catamaran-like side hulls is at least partially boat-shaped. , having a substantially narrower bow than its aft, where said catamaran side hull and calm sea The shape of the boat is defined by the intersection of the surface with the water line, such that the boat Said supporting gas cushion supports most of the boat's weight while traveling at speeds above knots. The catamaran hull is pressurized to sufficient pressure to hold the catamaran, and the catamaran hull has a forward A recess for accommodating at least a portion of the pressurized support gas cushion on its underside. In preparation for this, the lower surface of the catamaran hull that comes into contact with the water extends from near the front of the recess toward the rear. The boat is characterized in that the side hull expands from a vertical center plane. 3. the water-contacting lower surface at least partially surrounding the recess of the catamaran hull; after enlargement, the vertical center plane of the side hull in at least a part of the aft part of said side hull; 3. Boat according to claim 2, characterized in that the boat is substantially parallel to the . 4. The width of the recess in the side hull is at least from the front to the rear of the recess. 4. A boat according to claim 2 or 3, characterized in that it expands by 25%. 5. The average height of the recess above the lowest part of the keel of the side hull is be less than 50% of the distance from the bottom of the boat to the wet deck of the boat. 5. A boat according to claim 2, 3 or 4, characterized in that: 6. Said side hulls are asymmetrical when viewed at the calm sea waterline of said boat. 6. A boat according to any one of claims 2 to 5, characterized in that: 7. The vessel is characterized by having a center bow connected to the hull connection structure in a rock-like manner. 7. The boat according to any one of claims 2 to 6. 8. characterized in that the center bow extends at least partially forward of the side hulls. 8. The boat according to claim 7. 9. at least one of the side hull recesses is located at least partially adjacent one of the side hull recesses. one substantially rigid seal member, an underside of the substantially rigid seal member; a surface of said seal portion when viewed in at least one vertical section of the boat; Claims 2 to 3, characterized in that the material is inclined with respect to the horizontal along most of its width. 8. The boat according to any one of 8. 10. The substantially rigid seal member is arranged in at least one vertical cross section of the boat. characterized in that it extends along most of the width of said recess when viewed in 10. The boat according to claim 9. 11. the substantially rigid sealing member at least partially including a sealing lower surface; Said lower sealing surface when viewed in at least one vertical section of the boat characterized in that the bottom surface of the seal is more horizontal than the surface of the adjacent rigid seal member in front of it. 10. The boat according to claim 9. 12. At least one of the sealing members is configured to cross at least one vertical traverse of the boat. Claim 9, 10 or 10, characterized in that it has an inverted V shape when viewed in plane. is the boat described in 11. 13. characterized by having a vertically oriented ventilation step on each side hull side; 13. A boat according to claims 2 to 12, characterized in that: 14. At least a portion of the side hull side is visible in horizontal section of the boat. characterized by being closer to the vertical center plane of said boat at its rear than at its front when 14. A boat according to claim 13. 15. a first forward movable seal member disposed adjacent to the front portion of the recess of the side hull; and the first front movable seal member is movable relative to the boat. The boat according to any one of claims 2 to 14. 16. In its lowered position, the first forward movable seal member is configured to engage the keel of the side hull. 16. Boat according to claim 15, characterized in that it extends below the line. 17. a second forward movable seal member movable relative to the boat; a sealing member at least partially adjacent the rear of the first forward movable sealing member; 17. According to any one of claims 15 or 16, characterized in that it is arranged longitudinally. Boat on board. 18. an intermediate movable system located at least partially adjacent one recess in the side hull; a seal member, the intermediate movable seal member being movable relative to the boat; 18. A boat according to any one of claims 2 to 17, characterized in that the boat has the following characteristics: 19. A first recess and a second recess are provided in each side hull, and the first recess and the second recess are characterized in that they are at least partially separated from each other by a recess sealing member. A boat according to claim 2. 20. The gas pressurizing means can supply gas at different pressures to the first recess and the second recess. 20. A boat according to claim 19. 21. including a supporting gas cushion disposed within the side hull of the catamaran; A hull-like side hull is mechanically connected to the hull connection structure and also has a supporting gas cushion. The support gas cushion is supplied with pressurized gas by a gas pressurizing means, and the supporting gas cushion is A boat constructed to be pressurized to sufficient pressure to support most of the boat's weight. a recess in each said side hull, said recess being at least partially pressurized; A lower gas cushion is housed in the water contacting lower surface of the catamaran side hull. and the supporting gas cushion supports the majority of the weight of the boat. When the side vessel is pressurized to a sufficient pressure, from near the front of the recess toward the rear, It expands from the vertical central plane of the body, and the lower surface in contact with the water is expanded, and after expansion, the lower part of the side hull Both are characterized by being substantially parallel to the vertical center plane of the side hull along the aft part. boat. 22. The recess in the side hull has a width of at least at least from the front to the rear of the recess. 22. Boat according to claim 21, characterized in that the boat also expands by 25%. 23. The average height of the recess above the lowest part of the keel of the side hull is be less than 50% of the distance from the bottom of the boat to the wet deck of the boat. 23. A boat according to claim 21 or 22, characterized in that: 24. Said side hulls are asymmetrical when viewed at the calm sea waterline of said boat. The boat according to any one of claims 21, 22 or 23, characterized in that: . 25. The ship is characterized by having a center bow mechanically connected to the hull connection structure. A boat according to any one of claims 21 to 24. 26. at least one of said side hull recesses disposed at least partially adjacent one of said side hull recesses; also includes one substantially rigid sealing member, and a portion below the substantially rigid sealing member. A side surface of the seal when viewed in at least one vertical section of the boat. Claim 21, characterized in that the member is inclined with respect to the horizontal along a majority of its width. 26. The boat according to any one of 25 to 25. 27. The substantially rigid seal member is arranged in at least one vertical cross section of the boat. characterized in that it extends along most of the width of said recess when viewed in 27. The boat of claim 26. 28. the substantially rigid sealing member at least partially including a sealing lower surface; Said lower sealing surface when viewed in at least one vertical section of the boat characterized in that the bottom surface of the seal is more horizontal than the surface of the adjacent rigid seal member in front of it. 27. A boat according to claim 26 or 26. 29. At least one of the sealing members is configured to cross at least one vertical traverse of the boat. Claims 26 and 27, characterized in that it has an inverted V shape when viewed in plane. or the boat described in 28. 30. at least one side ventilation stem oriented vertically on one side of the side hull; 30. A boat according to claims 21 to 29, characterized in that it has a top. 31. At the level of the vertically oriented ventilation step less of the side hull side Both parts are located more aft than in the front when viewed in horizontal section of the boat. 31. Boat according to claim 30, characterized in that the boat is narrow. 32. a first forward movable seal member disposed adjacent to the front portion of the recess of the side hull; and the first front movable seal member is movable relative to the boat. 32. A boat according to any one of claims 21 to 31. 33. In its lowered position, the first forward movable seal member is configured to engage the keel of the side hull. 33. Boat according to claim 32, characterized in that it extends below the line. 34. a second forward movable seal member movable relative to the boat; a sealing member at least partially adjacent the rear of the first forward movable sealing member; 34. According to any one of claims 32 or 33, characterized in that it is arranged longitudinally. Boat on board. 35. an intermediate movable system located at least partially adjacent one recess in the side hull; a seal member, the intermediate movable seal member being movable relative to the boat; 35. A boat according to any one of claims 21 to 34. 36. characterized in that the hull connection structure is mechanically connected to the air turbulence generator. A boat according to any one of claims 21 to 35. 37. A first recess and a second recess are provided in each side of the hull, and the first recess and the second recess are characterized in that they are at least partially separated from each other by a recess sealing member. A boat according to any of claims 21 to 36. 38. The gas pressurizing means can supply gas at different pressures to the first recess and the second recess. 38. A boat according to claim 37. 39. including a supporting gas cushion disposed within the side hull of the catamaran; A hull-like side hull is mechanically connected to the hull connection structure and also has a supporting gas cushion. The support gas cushion is supplied with pressurized gas by a gas pressurizing means, and the supporting gas cushion is A boat constructed to be pressurized to sufficient pressure to support most of the boat's weight. a center bow extending forward of the front upper part of the side hull; The neck is mechanically connected to the hull connecting structure, and the hull connecting structure is connected to the front upper part of the hull. and extending from near to near the fore-upper part of said center bow, as seen in plan view of said boat. a boat shape having a substantially pointed bow defined by a deck line such that and the side hull accommodates at least a portion of the compressed support gas cushion. A plurality of recesses are provided on the lower surface of the side hull in order to is a boat characterized by a shape that expands from the front to the rear. 40. at least one of said side hull recesses disposed at least partially adjacent one of said side hull recesses; also includes one substantially rigid sealing member, and a portion below the substantially rigid sealing member. A side surface of the seal when viewed in at least one vertical section of the boat. 39. Claim 39, characterized in that the member is inclined relative to the horizontal along a majority of its width. Boats listed in. 41. The substantially rigid seal member is arranged in at least one vertical cross section of the boat. characterized in that it extends along most of the width of said recess when viewed in 41. The boat of claim 40. 42. a vertically oriented ventilation step on at least one side of said side hull; The boat according to any one of claims 39, 40 or 41, characterized in that it has . 43. a first forward movable seal member disposed adjacent to the front portion of the recess of the side hull; and the first front movable seal member is movable relative to the boat. 43. A boat according to any one of claims 39 to 42. 44. A first recess and a second recess are provided in each side hull, and the first recess and the second recess are characterized in that they are at least partially separated from each other by a recess sealing member. Boat according to claims 39-43. 45. The gas pressurizing means can supply gas at different pressures to the first recess and the second recess. 45. A boat according to claim 44. 46. including a supporting gas cushion disposed within the side hull of the catamaran; A hull-like side hull is mechanically connected to the hull connection structure and also has a supporting gas cushion. The support gas cushion is supplied with pressurized gas by a gas pressurizing means, and the supporting gas cushion is A boat constructed to be pressurized to sufficient pressure to support most of the boat's weight. wherein each of said side hulls at least partially has a respective bow; The side hull is at least partially lower than the hull coupling structure, and the hull coupling structure is lower than the hull coupling structure. has a wet deck on the lower side of the hull, and the wet deck covers most of the distance between the side hulls. and said side hull extends over at least one of said lowered supporting gas cushions. Also equipped with multiple recesses on the lower side of the side hull to accommodate some parts, said boat is calm The gas cushion absorbs most of the boat's weight when operated at normal sea levels. When pressurized to a pressure sufficient to support at least one of said catamaran hulls. a recess in the boat from the front to the rear, viewed from the horizontal water-contacting surface of said boat; a boat characterized by increasing width along at least part of its length; . 47. At least one recess in said side hull is enlarged in width and then reduced in length. 47. Boat according to claim 46, characterized in that the width is constant along at least one part. . 48. The recess in the side hull has a width of at least at least from the front to the rear of the recess. 48. The button according to claim 46 or 47, wherein the button is enlarged by 25%. To. 49. The average height of the recess above the lowest part of the keel of the side hull is be less than 50% of the distance from the bottom of the boat to the wet deck of the boat. 49. A boat according to any one of claims 46, 47 or 48, characterized in that: 50. Said side hulls are asymmetrical when viewed at the calm sea waterline of said boat. 50. A boat according to any one of claims 46 to 49. 51. The ship is characterized by having a center bow mechanically connected to the hull connection structure. A boat according to any one of claims 46 to 50. 52. characterized in that the center bow extends at least partially forward of the hull. 52. The boat of claim 51. 53. at least one of said side hull recesses disposed at least partially adjacent one of said side hull recesses; also includes one substantially rigid sealing member, and a portion below the substantially rigid sealing member. A side surface of the seaport when viewed in at least one vertical cross section of the boat. Claim 4, characterized in that the lever member is inclined relative to the horizontal along a majority of its width. 53. The boat according to any one of 6 to 52. 54. The substantially rigid seal member is arranged in at least one vertical cross section of the boat. characterized in that it extends along most of the width of said recess when viewed in 54. The boat of claim 53. 55. the substantially rigid sealing member at least partially including a sealing lower surface; Said lower sealing surface when viewed in at least one vertical section of the boat characterized in that the bottom surface of the seal is more horizontal than the surface of the adjacent rigid seal member in front of it. 54. The boat of claim 53. 56. At least one of the sealing members is visible in a vertical cross section of the boat. 54. A boat according to claim 53, having an inverted V shape when the boat is bent. 57. a vertically oriented ventilation step on at least one side of said side hull; 57. A boat according to claims 46 to 56, characterized in that it has. 58. At the level of the vertically oriented ventilation step less of the side hull side Both parts are located more aft than in the front when viewed in horizontal section of the boat. 58. A boat according to claim 57, characterized in that the boat is narrow. 59. a first forward movable seal member disposed adjacent to the front portion of the recess of the side hull; and the first front movable seal member is movable relative to the boat. 59. A boat according to any one of claims 46 or 58. 60. In its lowered position, the first forward movable seal member is configured to engage the keel of the side hull. 60. A boat according to claim 59, characterized in that it extends below the line. 61. a second forward movable seal member movable relative to the boat; a sealing member at least partially adjacent the rear of the first forward movable sealing member; 60. Boat according to claim 59, characterized in that it is longitudinally arranged. 62. an intermediate movable system located at least partially adjacent one recess in the side hull; a seal member, the intermediate movable seal member being movable relative to the boat; 62. A boat according to any one of claims 46 to 61, characterized in that the boat has the following characteristics: 63. A first recess and a second recess are provided in each side hull, and the first recess and the second recess are characterized in that they are at least partially separated from each other by a recess sealing member. 63. A boat according to any of claims 46 to 62. 64. The gas pressurizing means can supply gas at different pressures to the first recess and the second recess. 64. A boat according to claim 63. 65. including a supporting gas cushion disposed within the side hull of the catamaran; A hull-like side hull is mechanically connected to the hull connection structure and also has a supporting gas cushion. The support gas cushion is supplied with pressurized gas by a gas pressurizing means, and the supporting gas cushion is A boat constructed to be pressurized to sufficient pressure to support most of the boat's weight. at least partially between mutually substantially parallel inner surfaces of said side hulls; a first front movable seal member movable with respect to the boat disposed in the side hull; substantially of said side hull for at least partially accommodating a lower supporting gas cushion; a recess arranged in said side hull to enlarge at the rear of the parallel inner surfaces; A boat characterized by including: 66. The recess has a substantially constant width at least along its rear portion after expansion. 66. A boat according to claim 65. 67. The recess in the side hull has a width of at least at least from the front to the rear of the recess. 67. The button according to claim 65 or 66, wherein the button is enlarged by 25%. To. 68. The average height of the recess above the lowest part of the keel of the side hull is be less than 50% of the distance from the bottom of the boat to the wet deck of the boat. 68. A boat according to any one of claims 65, 66 or 67, characterized in that: 69. Said side hulls are asymmetrical when viewed at the calm sea waterline of said boat. 6849. A boat according to any one of claims 65 to 6849. 70. The ship is characterized by having a center bow mechanically connected to the hull connection structure. 70. A boat according to any of claims 65 to 69. 71. at least one of said side hull recesses disposed at least partially adjacent one of said side hull recesses; also includes one substantially rigid sealing member, and a portion below the substantially rigid sealing member. A side surface of the seal when viewed in at least one vertical section of the boat. Claim 65, characterized in that the member is inclined with respect to the horizontal along a majority of its width. The boat according to any one of 70 to 70. 72. having vertically oriented ventilation steps located on each side of the hull; 72. A boat according to any one of claims 65 to 71. 73. At least a portion of the side surface of the side hull is viewed in a horizontal plane of the boat. the vertical center plane of said side hull at the rear of said side hull than at the forward part; 73. A boat according to claim 72, characterized in that it is in close proximity to. 74. In its lowered position, the first forward movable seal member is configured to engage the keel of the side hull. Claims 65 to 73, characterized in that it extends below the line. boat. 75. a second forward movable seal member movable relative to the boat; a sealing member at least partially adjacent the rear of the first forward movable sealing member; Claims 65 to 74, characterized in that they are arranged longitudinally. boat. 76. The second forward movable seal member at least partially extends from the first forward movable seal member. 76. The boat of claim 75, wherein the boat extends laterally outwardly from the handle member. 77. an intermediate movable system located at least partially adjacent one recess in the side hull; a seal member, the intermediate movable seal member being movable relative to the boat; 77. A boat according to any one of claims 65 to 76. 78. A first recess and a second recess are provided in each side hull, and the first recess and the second recess are characterized in that they are at least partially separated from each other by a recess sealing member. 78. A boat according to any of claims 65 to 77. 79. The gas pressurizing means can supply gas at different pressures to the first recess and the second recess. 79. A boat according to claim 78. 80. The method further includes a movable seal member disposed adjacent to the rear end of the side hull. 80. A boat according to any one of claims 65 to 79, characterized in that the boat has the following characteristics: 81. including a supporting gas cushion disposed within the side hull of the catamaran; A hull-like side hull is mechanically connected to the hull connection structure and also has a supporting gas cushion. The support gas cushion is supplied with pressurized gas by a gas pressurizing means, and the supporting gas cushion is A boat constructed to be pressurized to sufficient pressure to support most of the boat's weight. In The side hull at least partially houses a compression supporting gas cushion of the side hull. In order to a substantially rigid seal member disposed adjacent to the substantially rigid seal member; The underside of the transparent seal member is visible in at least one vertical section of the boat. including a surface that is inclined relative to the horizontal along the majority of the width of this seal member. , and at least one of the recesses in the side hull widens from the front to the rear thereof. Featured boats. 82. At least one of said side hull recesses is formed by one or more stepped enlargements. 82. A boat according to claim 81, wherein the boat is enlarged by: 83. The recess has a substantially constant width at least along its rear portion after expansion. 83. A boat according to claim 81 or 82, characterized in that: 84. Said substantially rigid sealing member is located at the side hull when viewed from the vertical end of the boat. Claim 81, 82 or 8, characterized in that it extends along most of the width of the recess. 3. The boat according to any of 3. 85. the substantially rigid sealing member at least partially including a sealing lower surface; Said lower sealing surface when viewed in at least one vertical section of the boat characterized in that the bottom surface of the seal is more horizontal than the surface of the adjacent rigid seal member in front of it. 54. The boat of claim 53. 86. a step-in installation into said sealing lower side of said substantially rigid sealing member; reducing the wetted area of the substantially rigid seal member. 86. A boat according to any one of claims 81 to 85. 87. from the sealing lower side of the rigid seal member to the step inset. 87. A boat as claimed in claim 86, including means for supplying gas under pressure. 88. At least one of the sealing members is visible in a vertical cross section of the boat. 88. A boat according to claims 81 to 87, characterized in that it has an inverted V shape when the boat is bent. 89. a vertically oriented ventilation step on at least one side of said side hull; 89. A boat according to claims 81 to 88, characterized in that it has. 90. The ship is characterized by having a center bow mechanically connected to the hull connection structure. 90. A boat according to any of claims 81 to 89. 91. A first recess and a second recess are disposed in each side hull; that the recesses are at least partially separated from each other by a recess sealing member; 92. A boat according to any one of claims 81 to 91. 92. The gas pressurizing means applies different pressures to the first recess and the second recess. 92. A boat according to claim 91, characterized in that it can be supplied. 93. The lower surface of the substantially rigid seal member is arranged in a horizontal direction on at least one horizontal plane of the boat. including a surface offset to one side of the vertical center plane of said side hull when viewed in cross section; 93. A boat according to any one of claims 81 to 92, characterized in that: 94. including a movable seal member disposed adjacent to the rear end of the recess in the side hull; 94. A boat according to any one of claims 81 to 93, characterized in that: 95. including a supporting gas cushion disposed within the side hull of the catamaran; A hull-like side hull is mechanically connected to the hull connection structure and also has a supporting gas cushion. The support gas cushion is supplied with pressurized gas by a gas pressurizing means, and the supporting gas cushion is A boat constructed to be pressurized to sufficient pressure to support most of the boat's weight. In in each said side hull, housing at least a portion of the side hull supporting gas cushion; a first recess and a second recess, the first recess and the second recess being able to Gases at different pressures are supplied by the gas pressurizing means to support the control of the boat motion. and one recess in each of the side hulls widens from the front to the rear. A boat characterized by: 96. The gas pressurizing means has separate pressures for the first recess and the second recess. 96. A boat according to claim 95, including a gas pressure source. 97. The gas pressurizing means controls the supply of gas to the first recess and the second recess. a controller that receives as its input an orientation reading of the boat; 96. A boat according to any one of claims 94 or 95, characterized in that it receives a premium value. . 98. The gas pressurizing means controls the supply of gas to the first recess and the second recess. a controller configured to control a first recess and a first recess as inputs thereof; The method according to claim 94, 95 or 95, characterized in that it receives a pressure value in the second recess. Boats listed in any of the above. 99. The gas pressurizing means further connects the recess in one side hull to the recess in the other side hull. 99. The method according to claim 95, further comprising a connecting duct and a valve connected to the Boats listed in any of the above. 100. including supporting gas cushions disposed within the side hulls of the catamaran; The side hull of the catamaran is mechanically connected to the hull connection structure and is connected to the supporting gas cushion. The section is supplied with pressurized gas by a gas pressurizing means, and the support gas cushion is is a boat constructed to be pressurized to sufficient pressure to support most of the weight of the boat. The side hull is configured to contain at least a portion of the compressed support gas. A plurality of recesses are provided in the lower side of the side hull, and at least one of the recesses in the side hull is located in front of the side hull. ventilation strips extending from the rear to the rear and oriented vertically on the sides of the side hulls; when the side of the side hull is viewed in a horizontal plane of the boat; The rear part of the side hull is closer to the vertical center plane of the side hull than the front part. A boat featuring 101. The vertically oriented ventilation step has less air flow in its upper part than in its lower part. 101. A boat according to claim 100, characterized in that both are partially protruding. 102. The chines of the side hull are greater than the vertically oriented ventilation steps of the side hull. , at least partially protruding from the vertical center plane of the side hull. The boat according to claim 100 or 101. 103. including supporting gas cushions disposed within the side hulls of the catamaran; The side hull of the catamaran is mechanically connected to the hull connection structure and is connected to the supporting gas cushion. The section is supplied with pressurized gas by a gas pressurizing means, and the support gas cushion is is a boat constructed to be pressurized to sufficient pressure to support most of the weight of the boat. a recess at least partially accommodating said compressed gas cushion in front of said compressed gas cushion; each of said side hulls having an inner sidewall and an outer sidewall; When the boat is traveling at a speed of 25 knots or more, at least one vertical side of the boat When viewed in cross section, the outer sidewall is disposed substantially lower on average than the inner sidewall. A boat characterized by the fact that it is 104. the inner sidewall of said sidehull is substantially thinner on average than the outer sidewall of said sidehull; 104. The boat of claim 103. 105. that the inner sidewall of said side hull is on average less than half the width of the outer sidewall; 105. The boat of claim 104. 106. The lower surface of the outer sidewall of the side hull consists of an angular surface at the front and an angular surface at the rear. Any of claims 103, 104 or 105, characterized in that it has a rounded surface. The boat mentioned above. 107. characterized in that said side hull has a bow that is substantially narrower than its aft part; 107. A boat according to any one of claims 103 to 106. 108. The sidewall of at least one side hull is arranged from the bow of the side hull to the stern of the boat. Claims characterized in that they at least partially widen towards the rear. The boat according to any one of 103 to 107. 109. The side walls of said side hulls are substantially parallel to the vertical center plane of the boat after expansion. 109. A boat according to claim 108, characterized in that: 110. Said side hulls are asymmetrical when viewed at the waterline of the boat in calm sea conditions. 110. A boat according to any of claims 103 to 109. 111. The side hull extends substantially forward of the front of the boat's hull connection structure. 111. A boat according to claims 103 to 110. 112. It is characterized by having a center bow mechanically connected to the hull connection structure. 112. A boat according to any one of claims 103 to 111. 113. at least partially located adjacent one of said side hull recesses; at least one substantially rigid seal member, a lower surface of the rigid seal member; of said rigid seal member when viewed in at least one cross-section of the boat. Claim 10 characterized in that it includes a surface inclined with respect to the horizontal along a majority of the width. The boat according to items 3 to 112. 114. disposed at least partially adjacent said side hull recess and configured to support the boat; and an intermediate movable seal member movably mechanically coupled to the intermediate movable seal member. The boat according to any one of claims 103 to 113. 115. a second support gas cushion in each side hull, said support gas cushion the tubes are at least partially separated by at least one sealing member and The gas pressurization means is for a separate supporting gas cushion in at least one side hull. Claims 103 to 114, characterized in that gases at different pressures can be supplied by Any of the boats listed. 116. including supporting gas cushions disposed within the side hulls of the catamaran; The side hull of the catamaran is mechanically connected to the hull connection structure and is connected to the supporting gas cushion. The section is supplied with pressurized gas by a gas pressurizing means, and the support gas cushion is is a boat constructed to be pressurized to sufficient pressure to support most of the weight of the boat. one recess in each said side hull, each said recess having at least one recess; also partially houses the supporting gas cushion, and each side hull also has an inner sidewall and an outer sidewall. a sidewall, the inner sidewall being substantially thinner on average than the outer sidewall. A boat. 117. that the inner sidewall of said side hull is on average less than half the width of the outer sidewall; 117. The boat of claim 116. 118. When the boat is traveling at a speed of 25 knots or more, the outer sidewall Claim 1 characterized in that it is located on average substantially lower than the inner side wall. The boat according to any one of 16 and 117. 119. The lower surface of the outer sidewall of the side hull consists of an angular surface at the front and an angular surface at the rear. Any of claims 116, 117 or 118, characterized in that it has a rounded surface. The boat mentioned above. 120. characterized in that said side hull has a bow that is substantially narrower than its aft part; 120. A boat according to any one of claims 116 to 119. 121. The sidewall of at least one side hull is arranged from the bow of the side hull to the stern of the boat. Claims characterized in that they at least partially widen towards the rear. The boat according to any one of 116 to 120. 122. The side walls of said side hulls are substantially parallel to the vertical center plane of the boat after expansion. 122. A boat according to claim 121, characterized in that: 123. Said side hulls are asymmetrical when viewed at the waterline of the boat in calm sea conditions. 123. A boat according to any of claims 116 to 122. 124. The side hull extends substantially forward of the front of the boat's hull connection structure. 124. A boat according to claims 116 to 123, characterized in that: 125. It is characterized by having a center bow mechanically connected to the hull connection structure. 125. A boat according to any one of claims 116 to 124. 126. at least partially located adjacent one of said side hull recesses; at least one substantially rigid seal member, a lower surface of the rigid seal member; of said rigid seal member when viewed in at least one cross-section of the boat. Claim 11 characterized in that it includes a surface inclined with respect to the horizontal along a major part of the width. 6 to 125. 127. disposed at least partially adjacent said side hull recess and configured to support the boat; and an intermediate movable seal member movably mechanically coupled to the intermediate movable seal member. The boat according to any one of claims 116 to 126. 128. a second support gas cushion in each side hull, said support gas cushion the tubes are at least partially separated by at least one sealing member and The gas pressurization means is for a separate supporting gas cushion in at least one side hull. Claims 116 to 127, characterized in that gases at different pressures can be supplied by Any of the boats listed. 129. including supporting gas cushions disposed within the side hulls of the catamaran; The side hull of the catamaran is mechanically connected to the hull connection structure and is connected to the supporting gas cushion. The section is supplied with pressurized gas by a gas pressurizing means, and the support gas cushion is is a boat constructed to be pressurized to sufficient pressure to support most of the weight of the boat. at each said side at least partially housing said supporting gas cushion; a recess in the hull and at least partially located adjacent one of said side hull recesses; an intermediate movable seal member movably mechanically connected to the boat; disposed within the body and separated at least in part by at least one sealing member; a second spaced apart supporting gas cushion, and said gas pressurizing means is in the side hull. It is characterized by the ability to supply gas at different pressures to separate supporting gas cushions. boat. 130. The intermediate movable seal member is configured to receive a push force that applies a downward force to the seal member. 130. A boat according to claim 129, characterized in that it is mechanically coupled to pressure means. . 131. Claim characterized in that the pressing means are at least partially elastic. 129 or 130. 132. characterized in that said intermediate movable sealing member consists of a number of separate elements; 132. A boat according to claim 129, 130 or 131. 133. Said intermediate movable sealing member is mounted relative to the boat by a hinge-like mechanism. 133. Boat according to claims 129 to 132, characterized in that it is attached. 134. characterized in that said side hull has a bow that is substantially narrower than its aft part; A boat according to claims 129-130. 135. at least partially located adjacent one of said side hull recesses; at least one substantially rigid seal member, a lower surface of the rigid seal member; is the rigid seal when viewed in at least one vertical section of the boat. A claim characterized in that the material includes a surface inclined with respect to the horizontal along most of the width of the material. The boat according to any one of 129 to 134. 136. including supporting gas cushions disposed within the side hulls of the catamaran; The side hull of the catamaran is mechanically connected to the hull connection structure and is connected to the supporting gas cushion. tion is carried out in a boat which is adapted to be supplied with gas under pressure by means of gas pressurization. a recess is formed in each catamaran side hull, said recess being at least partially The catamaran side hulls each define a pressurized gas cushion; a side wall and an outer side wall, the boat has a speed of 25 knots or more in calm seas; said gas cushion supports most of the boat's weight when operated at speed in at least one of said catamaran hulls when pressurized to a pressure sufficient to The recess extends from the front to the rear of the boat, viewed from the horizontal water-contacting surface of the boat. increasing width along at least a portion of its length; and at least one of said recesses; A boat characterized in that the is at least partially asymmetrical. 137. The widening recess in the side hull extends over at least part of its longitudinal length. 137. The boat of claim 136, wherein the boat has a constant width. 138. At least one of the inner side surface and the outer side surface of the side hull is asymmetrical to each other. any of claims 136 or 137, characterized in that it has an outer water contacting surface of Boats listed in. 139. The average height of the recess above the lowest part of the keel of the side hull is less than 50% of the distance from the bottom of the boat to the wet deck of the boat. 139. A boat according to any one of claims 136 to 138. 140. The ship is characterized by having a center bow mechanically connected to the hull connection structure. 140. A boat according to any one of claims 136 to 139. 141. one of the at least one side hull recess located at least partially adjacent one of the side hull recesses; each of which includes one substantially rigid seal member; The underside, when viewed in at least one vertical section of the boat, Claim 1, characterized in that the lever member is inclined with respect to the horizontal along a majority of its width. The boat according to any one of 36 to 140. 142. the substantially rigid sealing member is at least partially asymmetrical; 142. A boat according to claim 141. 143. the substantially rigid sealing member includes at least a partially sealing lower surface; , said sealed underside when viewed in at least one vertical section of the boat; This lower sealing surface is characterized by being closer to horizontal than the surface of the rigid sealing member adjacent to the front. 143. A boat according to claim 141 or 142, characterized in that the boat has the following characteristics: 144. a vertically oriented ventilation strip located on at least one side of said side hull; 144. The boat according to any one of claims 136 to 143, characterized in that the boat has a . 145. a portion of said side surface of said side hull having said vertically oriented ventilation step; At least some of the spiders are located at the rear of the boat, as viewed in the horizontal plane of the boat, from the front of the boat. 145. A boat according to claim 144, characterized in that the boat is narrow. 146. located adjacent to the front of one of the side hull recesses and is movable relative to the boat. 146. Claims 136 to 145, further comprising a first forward movable seal member. Boat as described. 147. located at least partially adjacent one of said side hull recesses; an intermediate movable seal member movably mechanically coupled to the 147. A boat according to claims 136-146. 148. The intermediate movable seal member is configured to restrain a downward force from being applied to the seal member. 148. A boat according to claim 147, characterized in that it is mechanically coupled to pressure means. . 149. Claim characterized in that the suppression means are at least partially elastic. The boat described in 148. 150. characterized in that said intermediate movable sealing member consists of a number of separate elements; 150. A boat according to any of claims 148 or 149. 151. Each of the side hulls includes a first recess and a second recess; characterized in that the second recess is at least partially separated by recess sealing means. 151. A boat according to any one of claims 136 to 150. 152. A gas pressurizing means applies gas at different pressures to the first recess and the second recess. 152. A boat according to claim 151, characterized in that it can be supplied. 153. When the boat is traveling at a speed of 25 knots or more, at least When viewed in one vertical cross section, said outer sidewall is on average more practical than said inner sidewall. The button according to claim 136 to 152, characterized in that the button is arranged at a qualitatively low level. To. 154. The claim is characterized in that the inner sidewall of the side hull is thinner on average than the outer sidewall. The boat according to any one of claims 136 to 153. 155. The lower surface of the outer sidewall of said side hull is an angular surface at the front of the boat. Claims 136 to 154 characterized in that it consists of a rounded surface at the rear. Boats listed in any of the above.