KR101645215B1 - Steel ship or light alloy ship - Google Patents

Abstract

Shaped plate member which does not have an outer shell occupying 90% or more to 100% or less of the outer shell surface area of the main hull and which has only one side or both sides of a plane and a plane that can be formed by two- (21) to (27), (31) to (35), and (41) to (50). An outer sheath occupying 90% or more to 100% or less of the surface of the outer sheath below the load line is formed of the above-mentioned strip-shaped plate member. As a result, the machining of the plate member on the outer plate surface of the steel wire, while avoiding the deterioration of the propulsion performance of the steel wire or the light alloy wire, is significantly reduced, such as a curved surface machining operation or a press working operation.

Description

Steel wire or light alloy wire {STEEL SHIP OR LIGHT ALLOY SHIP}

The present invention relates to a steel wire or a raceway metal wire capable of remarkably reducing the number of processes such as flexing and press working of the outer shell of a ship by a skilled engineer in the processing of plate members on the outer plate surface of a steel wire or light- .

In the conventional ship, the outer plate portion forming the outer shape has a bow portion and a stern portion other than a parallel portion (a portion having the same outer shape in the transverse section) called a parallel portion, Since the front surface (non-expansible surface), which can not be expanded in a plane, is widely used in this portion due to the shape of a dimensionally curved surface, in order to make the front surface flat, The bending of the back plate of the steel plate) and the press working process became indispensable. For this reason, a large number of machining time is required, and the machining accuracy is difficult to control, and a skilled worker is required.

In order to facilitate the machining of a part of the hull having a large bending process, for example, as described in Japanese Patent Application Laid-Open No. 5-92090 (Patent Document 1) A knuckle is provided on both outer shells and a shell formed by straightening the knuckle from the knuckle to the end of the stern intersecting at the center line of the ship and a skull- Has been proposed.

However, this hull form has a hull shape with a hull shape remarkably limited, and it is impossible to introduce a shape of a spherical bow horn for reducing the wave resistance, so that there is a great adverse effect on the propulsion performance of the hull There is a problem that it occurs.

In addition, as described in Japanese Patent Application Laid-Open No. 8-239082 (Patent Document 2) of Japanese Patent Application Laid-Open No. 8-239082, there is a problem that a linear line- , It is proposed to reduce the time taken for machining by reducing the three-dimensional curvature of the fore-and-aft bow of the bulb-carrying ship and the frontal plate of the front half of the ship, lowering the drying cost, and at the same time, .

However, in this vessel, there is an advantage that a part of the hull is finished by the two-dimensional bending process. However, there is a problem that the three-dimensional bending of the ball athlete and its vicinity or the bottom portion is large and requires skilled bending work or three- There is a problem that the part remains intact. In addition, since it is easy to dry, there is a problem that the performance of the ship such as the propulsion performance is adversely affected.

Prior art literature

Patent literature

Patent Document 1: Japanese Patent Application Laid-Open No. 5-92090

Patent Document 2: Japanese Patent Application Laid-Open No. 8-239082

Summary of the Invention

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and an object of the present invention is to provide a method of manufacturing a plate member on the outer shell surface while suppressing deterioration of the propulsion performance of a steel wire or a light alloy wire, Which is capable of remarkably reducing the strength of the steel wire or light alloy wire.

The steel wire or light alloy wire of the present invention for achieving the above object is a steel wire or a light alloy wire having a propelling device and having a shell plate occupying not less than 90% and not more than 100% of the shell plate surface area of the main hull, Like band member extending in the lengthwise direction of the hull and having only one side or both sides of a surface and a plane which can be formed by machining. The term "steel wire" or "light alloy wire" means that steel wire or the like is excluded. In addition, in the surface area of the outer shell of the main hull, additions for energy conservation such as a fin or a duct, , A stern tube, a strut of a biaxial line, and the like are excluded.

Shaped plate member which does not have any one side or both sides of a surface and a plane which can be formed by the two-dimensional bending process and occupies the majority of the outer plate surface. Therefore, in the conventional vessel, It is possible to remarkably reduce or omit the curving processing and the press working of the dimensional bending. In other words, since most of the outside sheathing is constituted by a strip-shaped plate member which can be formed only by plane or two-dimensional bending, no special technique or a working machine is required. Further, if the ratio of the belt-shaped plate member is less than 90% of the outer shell surface area of the hull, the surface requiring the third bending remains, and the effect of reduction in the bending work and the press work is reduced, So that the advantage of this configuration is reduced.

This makes it possible to manufacture only the outer plate block at the time of block drying of the ship, by cutting the flat plate and bending it two-dimensionally. Thus, skilled technicians and special tools are not required. It is possible to manufacture the outer plate block (ship part). As a result, the process management at the shipyard is facilitated, and the lead time compression, which is the period from the start to the end of the operation, can be expected. Thus, the inexpensive drying cost can be realized and the inexpensive ship can be provided.

Further, by forming the outer sheath of the hull by the strip-shaped plate member extending in the longitudinal direction of the hull, the work of replacing the hull form originally composed of complicated curved surfaces with the aggregate of the band-shaped plate members with respect to the hull form to be an object is simplified. Further, since the flow of the surface of the hull often flows along the longitudinal direction of the hull, if it is formed of a strip-shaped plate member extending in the longitudinal direction of the hull, the flow is not disturbed, .

If the outer plate, which occupies 90% or more to 100% or less of the surface of the outer shell below the load line, is formed of the above-mentioned band-shaped plate member in the above steel plate or light alloy wire, The effect of reducing the number of machining holes is increased. Further, if the ratio of the belt-shaped plate member is less than 90% of the surface area of the outer shell below the load line of the hull, a lot of surfaces requiring the third bending are left and the effect of reducing the bending work and the press work is reduced, The influence of performance deterioration becomes large, and the advantage of this configuration is reduced.

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In the steel wire or light alloy wire described above, at least the joining portions between the strip-shaped plate members under the load waterline at one side of the bow or stern are directly connected to the bilge portion of the central portion of the ship or the other joining portion is interposed therebetween (Knuckles) of the strip-shaped plate members are gathered together with the bilge part, it is possible to reduce the angle at which the junctions cross over the flow lines, and it is possible to suppress the increase in resistance It is possible to avoid deterioration of the propulsion performance as much as possible. With this configuration, it is possible to reduce the resistance increase as compared with a simple partial face modification structure (simple face patch combination structure) such as a plane or a cylindrical face.

Therefore, even with a vessel having excellent performance of a conventional vessel having a three-dimensional curved surface, it is possible to easily approximate the outer plate surface to the aggregate of the belt-like members, while preventing the performance from deteriorating.

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With regard to the portion of the spherical bow of the steel wire or the light alloy wire described above, it is also possible to add a band-shaped plate member to the forefront portion and to extend the added band-shaped plate member to the bilge portion Shaped plate member and the adjoining band-shaped plate member by a point, or a point where the joined portion between the added band-shaped plate member and the adjacent band-shaped plate member is concentrated Shaped plate member formed in a three-dimensional curvature on the outer circumferential surface of the outer circumferential surface of the plate member.

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In the steel wire or light alloy wire described above, a belt-shaped plate member for forming a shape around the stern tube of the stern is extended up to the parallel portion, or, at the stern side of the parallel portion, Shaped plate member is closed or a curved plate member formed in a three-dimensional curved shape is provided at a portion where the joint portion of the belt-like plate member is concentrated, whereby the flow of water to the propeller is prevented It is possible to reflect the characteristic of the shape composed of the three-dimensional curvature in the original linear shape also in the linearity of the ship.

In the above-mentioned steel wire or light alloy wire, if the transverse section of the bilge portion is formed into a polygonal shape by forming the belt-like plate member having the central portion of the ship body outside the plane surface, the cross- It is possible to manufacture the plate by merely cutting and welding the plate member, so that a facility for bending and bending is not required. The ratio of the central portion of the hull to the hull is very large in a large non-preselection line such as a tanker line in which the line speed is late, so that the processing cost can be remarkably reduced.

In the above steel wire or light alloy wire, when a section perpendicular to the longitudinal direction of the hull of each of the strip-shaped plate members is parallel to the longitudinal direction of the hull as viewed from the front, Shaped plate member when viewed from the front of the hull is made uniform so that the hull form composed of the original complicated curved surface can be formed in the shape of the hull, The work of changing into the aggregate of the members is further simplified.

According to the steel wire or light alloy wire of the present invention, it is possible to prevent the deterioration of the propulsion performance of a ship of a steel wire or a light alloy wire while significantly reducing the number of operations such as a curving operation and a press working operation by a skilled engineer It is possible to reduce.

Brief Description of Drawings

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a side view of a hull showing an example of a configuration in which an outer shell surface of a ship of a steel wire or light alloy wire according to an embodiment of the present invention is formed of an aggregate of strip-shaped plate members.

[Fig. 2] Fig. 2 is a bottom view of the hull of Fig.

[Fig. 3] Fig. 3 is a front view of the hull showing the configuration of the forward side of the hull of Fig. 1;

[Fig. 4] Fig. 4 is a partial perspective view showing the configuration of the forward side of the hull of Fig.

[Fig. 5] Fig. 5 is a rear view of the hull showing the stern side of the hull of Fig. 1. [Fig.

[Fig. 6] Fig. 6 is a partial perspective view showing the stern side of the hull of Fig. 1. [Fig.

Hereinafter, a steel wire or light alloy wire (hereinafter referred to as a ship) according to an embodiment of the present invention will be described with reference to the drawings. The ship to which the present invention is applied is a steel wire or a light alloy wire equipped with a propulsion device, and preferably the planned sailing speed is 0.1 to 0.5 in froude number. In other words, it is possible to use a ship such as a cruise ship such as a sightseeing boat, a ferry line such as a ferry, a tanker, a liquefied gas ship, a chemical ship, a bulk cargo ship, an ore carrier, a car carrier, a container ship, For ships containing special ships such as fire-fighting vessels and marine survey vessels, we have excluded skylines and timber lines with simple shapes.

The furd number is a non-dimensional number that is Fn = SQRT ((V * V) / (g * Lpp)) where V is the speed, V is the water head length of the ship, It is a well used expression in the shipbuilding industry when expressing speed as a dimensionless display. The number of furudes is, for example, about 0.15 in a relatively low-speed tanker and 0.26 to 0.28 in a relatively high-speed container ship.

And, the effect of the present invention is largely obtained is a general merchant vessel which is required to be operated efficiently at a speed predicting mainly the distances. In the case of the planned sailing speed, the number of Froude is set to 0.13 ~ 0.30 in general merchant ships, and it is expected to be especially effective for these ships. Further, in the case of a normal commercial ship, a complicated curved surface is often used at the forefoot portion and the stern portion excluding the parallel portion, so that a reduction effect of the complicated bending work of the present invention is also expected. Therefore, the present invention is effective from the viewpoint of the increase in resistance and the drying cost in a ship having a relatively low-speed furuding number of 0.13 to 0.30.

As shown in Figs. 1 to 6, in the ship 10 according to the embodiment of the present invention, the outside sheath occupying 90% or more and 100% or less of the outside sheathing surface area of the main hull is divided into two portions, Like plate member which does not have any one side or both sides of the plane and which extends in the longitudinal direction of the hull.

In other words, most of the outer shell surface is made up of the strip-shaped plate members 21 to 26, 31 which do not have any one or both of the surface and the planar surface that can be formed by two-dimensional bending, ) To (35), (41) to (50). The belt-like plate members 21 to 26, 31 to 35, and 41 to 50 may be planar or roller bendable, or may be a three- It can be manufactured without requiring a press work.

The area of the surface of the outer shell does not include additives for energy conservation such as fins and ducts, rudder tubes, struts of biaxial lines, and the like. If the ratio of the strip-shaped plate members 21 to 26, 31 to 35 and 41 to 50 is less than 90% of the outer shell surface area of the hull, So that the effect of reducing the curvature machining operation and the press work is reduced and the influence of deterioration of performance is increased, and the advantage of this configuration is reduced.

According to this configuration, the strip-shaped plate members (21) to (26), (31) to (35), (41) to It is possible to remarkably reduce or omit the three-dimensional curving processing and the pressing work, which require a very long time and a special engineer, in the conventional vessel. In other words, since most of the shell plates are composed of the strip-shaped plate members 21 to 26, 31 to 35, and 41 to 50 that can be formed only by planar and two-dimensional bending, Or a machine tool is not required.

As a result, only the process of cutting the flat plate and bending it two-dimensionally is performed, so that a skilled technician or a special mechanism is not required, and if there is a plate cutting mechanism and a bending roller It becomes possible to manufacture a shell block (a part of a ship) anywhere. As a result, the process management at the shipyard is facilitated, and the lead time compression, which is the period from the start to the end of the operation, can be expected. Thus, the inexpensive drying cost can be realized and the inexpensive ship can be provided.

Further, since the flow of the surface of the hull often flows along the longitudinal direction of the hull, if it is formed of a strip-shaped plate member extending in the longitudinal direction of the hull, the flow is not disturbed, .

Since the outside sheathing below the load water line WL has many tertiary curved surfaces, the outside sheathing occupying 90% or more to 100% or less of the outer sheath surface below the load water line WL is referred to as the strip- (31) to (35), (41) to (50). With this configuration, the outer plate portion having relatively large bending work in the conventional vessel is formed of the strip-shaped plate members 22 to 27, 31 to 35 and 41 to 50, The effect of reducing the airflow becomes large. Further, if the ratio of the belt-shaped plate member is less than 90% of the outer shell surface area below the load line WL of the hull, the surface requiring the third-order bending remains, The effect of deteriorating performance becomes large, and the advantage of this configuration is reduced.

The belt-like plate members 22 to 27 (43) to (50) under the load water line WL at one side (both sides in this embodiment) of the bow or stern are adjacent to each other, Shaped plate members 22 to 27 and 43 to 50 in the hull transverse section at a junction of preferably 80% or more and 100% or less of the knuckle (? Shown in FIGS. 3 and 5) is set to be larger than 90 degrees and smaller than 270 degrees, the angle of the knuckle angle at the time of exceeding the joint portion becomes small, and it is possible to further suppress the increase in resistance. When the knuckle angle is 90 degrees or less or 270 degrees or more, the angle at which the flow is refracted at the joining portion (knuckle portion) becomes rapid, and the suppression of the increase in resistance becomes insufficient. Further, in order to further reduce the resistance, it is preferable that the knuckle angle is in a range from 130 degrees to 230 degrees. On the other hand, if the knuckle angle is set to 170 degrees or more and 190 degrees or less, the number of divisions of the strip-shaped plate member increases, the air flow increases, and the advantages become small.

The belt-like plate members 22 to 27 (43) to (50) under the load water line WL at one side (both sides in this embodiment) of the bow or stern are adjacent to each other, Shaped plate members 32 to 35 constituting the bilge portion of the midship portion 30 are connected directly or with other joining portions interposed therebetween, preferably not less than 80% and not more than 100% of the knuckles. This allows the joining portions of the strip-shaped plate members 22 to 27 and 43 to 50 to be assembled into the strip-shaped plate members 32 to 35 forming the bilge portion, It is possible to reduce the angle at the time of exceeding the flow rate (flow line), so that the increase in resistance can be suppressed and it is possible to avoid deterioration of the propulsion performance as much as possible. With this configuration, it is possible to reduce the increase in resistance as compared with a simple partial face modification structure (simple face patch combination structure) such as a plane or a cylindrical face.

Therefore, even in a vessel having excellent performance of a conventional vessel having a curved surface with a three-dimensional curvature, the outer plate surface can be easily made into an aggregate of belt-like members while preventing the performance from deteriorating.

3 and 5, the axis of curvature of the surface that can be formed by the two-dimensional curved machining of the strip-shaped plate members 21 to 27 and 41 to 50 is within the hull transverse section Shaped plate members 21 to 27 and 41 to 50 so as to be parallel to each other, it is possible to obtain the shape of the hull form , The work of replacing the hull form composed of the original complex curved surface with the aggregate of the strip-shaped plate members 21 to 27 and 41 to 50 is further simplified. As a result, the cross section perpendicular to the longitudinal direction of the hull of each of the strip-shaped plate members 21 to 27 and 41 to 50 is parallel to the front and rear direction of the hull as viewed from the front. That is, the inclination (?) Of the cross section in each of the strip-shaped plate members (21) to (27), (41) to (50) when viewed from the front of the hull is constant.

Further, in the direction above the load line WL of the bow side, there are many relatively simple shapes such as a bow flare, but with respect to the outside plate lower than the load line WL on the bow side, in the prior art, Of the outer shell surface of the hull at a position lower than the load waterline WL and at the position of the bow end and a position behind the water column at a distance of 0.1 times the length of the water column, It is preferable to form the outer plates occupying not more than 100% in the above-described manner by the strip-shaped plate members 22 to 27. For example, as shown in Figs. 3 and 4, ) To (27). If the ratio of the belt-like plate member to the outer plate surface area of the forward side portion is less than 50%, the surface requiring the third-order bending remains, and the effect of reducing the bending work and the press work is reduced, The advantage of this configuration is reduced.

More specifically, the bow flare portion is formed of the belt-shaped plate member 21 on the forward side, and the belt-like plate member 22 on the bow side is formed downward from the knuckle below the bow. The upper surface of the bulb-shaped bow is divided into a belt-like plate member 23 on the forward side, a belt-shaped plate member 22a divided from the belt-like plate member 22 on the side of the bow side, 24, and 25, and the lower surface is formed of the belt-shaped plate member 26 on the forward side. Then, the bottom surface is formed by the strip-shaped plate member 27 on the forward side. And a portion near the front end of the strip-shaped plate member 27 on this forward side is bent upward.

In addition, with respect to the spherical athlete, it is possible to easily mount the ball athlete by adding the band-shaped plate member 23 to the forward side. In this case, the lines of the joining portions (knuckles) with the adjacent strip-shaped plate members 22 and 24 are concentrated in points so that the strip-like plate member 23 does not extend to the bilge portion, And a curved plate member formed by three-dimensional curvature is provided in the concentrated portion. As a result, it is possible to easily form the spherical bow shape, and it is possible to obtain the effect of the spherical bow.

The plate-shaped plate members 24 and 25 on the side of the bow forming the side face and the plate-shaped plate member 26 on the side of the bow forming the lower face form a band shape of the parallel portion forming the bilge of the ship body central portion 30 Respectively, to the plate members 32, 33, and 34, respectively. Shaped plate member 27 forming the bottom surface is connected to the strip-shaped plate member 35 of the parallel portion forming the bottom surface of the midship portion 30 of the ship. As a result, the joining portions (knuckles) of the strip-shaped plate members 24, 25, 26 are brought together by the strip-shaped plate members 32, 33, 34 forming the bilge portions, So that the angle at which the junction is over the flow line is made smaller.

The number of the strip-shaped plate members 21 to 27 on this bow side is 13 in both strings in the ship 10 of the present embodiment, but is preferably 9 to 17. If the number is less than 9, the shape is simplified, and the performance of the ship is lowered. If the number is more than 17, the number of joints increases, and the number of the drying air increases.

In the conventional vessel, there is often a bulbous bow which requires a particularly complicated bending process, and the outer plate portion of this bow portion is formed of the belt-like plate members 21 to 27 , The effect of reducing the machining airflow becomes remarkably large.

As shown in Figs. 1 to 6, the plate-shaped plate members 31 to 35 having parallel sections having the same central cross section as the transverse section 30 are formed on the plane, and the cross-sectional shape of the bilge section is a polygonal Shape. The vertical side of the hull is formed of a strip-shaped plate member 31 of a parallel portion and the bottom is formed of a strip-shaped plate member 35 of a parallel portion. Shaped plate members 32, 33, and 34 of the parallel portion are formed between the strip-shaped plate member 31 of the parallel portion and the strip-shaped plate member 35 of the parallel portion. That is, the four semicircular parts are formed by the strip-shaped plate members 32, 33, and 34 of the parallel parts of the three planes. When the lengths of the three sides in the cross section are made the same, the strip-like plate members 32, 33, 34 of the three parallel parts become the same size, so that it is easy to cut the plate or plate.

The number of the strip-shaped plate members 31 to 35 of the parallel portion forming the central portion of the ship is nine in the two ships in the ship 10 of the present embodiment, but is preferably seven to thirteen or less. If the number is less than 7, the shape is simplified and there is a risk that the performance of the ship is lowered. If the number is more than 13, the amount of the joined portion increases and the number of the drying air increases.

According to this configuration, in the prior art, since the section in which the bifurcated section of the cross-sectional shape is an arc shape and the section requiring bending can be formed as a flat assembly, it can be manufactured by merely cutting and welding the plate member, The facility becomes unnecessary. The ratio of the hull parallel portion to the hull is very large in a large non-selected line such as a tanker line in which the line speed is slow, so that the number of processing can be remarkably reduced.

Although there are many relatively simple shapes above the stern side load line (W. L) at the stern side, in the prior art, three-dimensional curved surfaces are used for the outside sheath below the stern side load line WL The position of the stern end and the position of the stern waterline in front of the waterline at a distance of 0.1 times the distance from the ship's waterline (W. L) Shaped plate members 41 to 50 as shown in Figs. 5 and 6, it is preferable to form the outer plates occupying not less than 100% and not more than 100% . If the ratio of the strip-shaped plate member to the outer plate surface area of the stern side portion is less than 50%, the surface requiring the third-order bending remains, and the effect of reducing the curved surface working and the pressing work is reduced, And the advantage of this configuration is reduced.

More specifically, the stern side plate is formed of the stern side plate-shaped plate member 41, and the transom having a large planar shape at the stern end is formed of the stern side plate-shaped plate member. The upper bottom side portion is formed by the stern side plate-like plate members 43, 44, 43 and the lower bottom side portion is formed by the stern side plate-like plate members 46, 47, 48, and 49, and the bottom is formed by the stern side plate-shaped plate member 50. [

Like plate member 41 on the aft side forming the side face is connected to the aft-side plate-like plate member 42 forming the transom. The stern side plate-like plate members 43, 44, 45 forming the upper bottom side are also connected to the aft-side plate-like plate member 42 forming the transom. On the other hand, the stern side plate-shaped plate members 46, 47, 48, and 49 forming the bottom side of the lower portion form a stern end portion by connecting the members on the port side and the starboard side to each other . And a stern tube (not shown) in which a propeller shaft is inserted is installed at the end of the stern.

Shaped plate members 46, 47, 48, and 49 are provided to make the shape of the stern tube around the stern. However, the belt-like plate members 46, 47, And 48 are extended to the central portion 30 in the configurations of Figs. 5 and 6, but it is also possible to close the band-shaped plate member by concentrating the points in an appropriate place (aft side) immediately in front thereof (on the stern side). Further, a curved plate member formed in a three-dimensional curvature may be provided at a portion where the line of the joining portion of the strip-shaped plate member is concentrated. This makes it possible to reflect the characteristic of the shape composed of the three-dimensional curvature of the original linear shape of the water flow to the propeller also in the linear form of the ship 10. [

6, the stern side plate-shaped plate member 41 forming the aft side face forms the side surface of the ship body central portion 30. In other words, Like plate members 43 and 44 which are connected to the belt-shaped plate member 31 of the parallel portion forming the upper side and the lower side portions of the stern side plate member 43 and 44 which form the upper bottom side, The member 49 is connected to the strip-shaped plate members 32, 33, 34 of the parallel portion forming the bilge portion of the ship body center portion 30, respectively. Further, the aft-side plate-like plate member 50 forming the bottom surface is connected to the band-shaped plate member 35 of the parallel portion forming the bottom surface of the ship body central portion 30.

The stern side plate-like plate member 45 forming the upper bottom side and the stern side plate-like plate members 46, 47, 48 forming the bottom side of the lower side are provided on the stern side Like plate member 44 and the aft-side plate-like plate member 49, it becomes thinner as it goes toward the bow.

As a result, the joining portions (knuckles) of the strip-shaped plate members 42 to 49 are gathered together on the strip-shaped plate members 32, 33, 34 forming the bilge portion, And the angle at the time when the angle?

The number of the strip-shaped plate members 41 to 50 on the stern side is 17 in the two ships in the ship 10 of the present embodiment, but 13 to 21 are preferable. If the number is less than 13, the shape is simplified, and the performance of the ship is lowered. If the number is more than 21, the number of joints increases and the number of dry air increases.

This stern side has a complicated stern shape that requires a bending process after the bow portion in the conventional marine vessel, and the outer stern portion of the stern portion is connected to the stern side band-shaped plate members 41 to 50 Therefore, the effect of reducing the number of machining holes is remarkably increased.

Therefore, with the ship 10 having the above-described configuration, even with respect to a ship having excellent performance of a conventional ship having a three-dimensional curved surface, the outer plate surface can be easily formed into a strip- 21) to (27), (31) to (35), and (41) to (50).

In addition, it is possible to significantly reduce the number of operations, such as the curved surface working and the press working, performed by the skilled engineer in the processing of the plate member on the outer shell surface while suppressing the deterioration of the propulsion performance of the ship 10.

Industrial availability

According to the steel wire or light alloy wire of the present invention, it is possible to reduce the number of airflows such as the curving operation and the press working operation by the skilled engineer in the processing of the plate member on the outer plate surface of the steel wire while suppressing the deterioration of the propulsion performance of the steel wire Because it is possible, it is available in many ships.

Explanation of symbols

10 Ships (steel wire or light alloy wire)

20 Aft side portion

21 to 27 The strip-shaped plate member

30 Center of the ship

31 to 35 The strip-shaped plate member

40 stern side section

41 to 50 Aft-shaped plate-shaped plate member

Claims (10)

In a steel wire or light alloy wire equipped with a propulsion device,
Like shell plate which does not have a shell plate occupying 90% or more to 100% or less of the shell plate surface area of the main hull and which has only one side or both sides of a plane capable of being formed by two-dimensional bending processing, Member,
As for the portion of the bulb-shaped bow, a band-shaped plate member is added to the fore side of the main hull, and the additional belt-like plate member is formed so as not to extend to the bilge portion, Shaped plate member formed in a three-dimensional curvature is provided at a portion where the joint between the plate member and the belt-like plate member is concentrated or the joint portion between the added band-shaped plate member and the adjacent band- Wherein the steel wire or light alloy wire is made of steel. The method according to claim 1,
Characterized in that the joining portions between adjacent ones of the belt-like plate members under the load waterline at one of the fore and aft ends of the main hull are connected to the bilge portion of the central portion of the ship either directly or with the other joining portion interposed therebetween. Or light alloy wire. 3. The method according to claim 1 or 2,
Characterized in that the bilge portion of the main hull is formed by three strip-like plate members of parallel portions. 3. The method according to claim 1 or 2,
Characterized in that the number of strip-shaped plate members forming the central portion of the main hull is 7 to 13 in the positive and negative hulls. 3. The method according to claim 1 or 2,
Wherein the number of the strip-shaped plate members forming the bow of the main hull is set to 9 or more and 17 or less in the positive and negative hulls. 3. The method according to claim 1 or 2,
Wherein the number of the strip-shaped plate members forming the stern of the main hull is set to 13 or more and 21 or less in the positive and negative hulls. 3. The method according to claim 1 or 2,
As for the circumference of the stern tube of the stern of the main hull, it is preferable that the strip-shaped plate member for forming the shape around the stern stern tube is extended to the parallel portion, or the stern- Wherein a plate member having a curved surface formed in a three-dimensional curvature is provided at a portion where the plate member is closed, or where the joining portion of the strip member is concentrated. 3. The method according to claim 1 or 2,
Characterized in that the main body of the main hull is formed of the band-shaped plate member having no plane outside, and the bilge section has a polygonal cross-sectional shape. 3. The method according to claim 1 or 2,
Wherein a section perpendicular to the longitudinal direction of the hull of each of the strip-shaped plate members is parallel to the strip-shaped plate member in the longitudinal direction of the hull when the hull is viewed from the front. delete

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