JP3128569U - Stabilized catamaran - Google Patents

Abstract

When a catamaran encounters rough waves, it effectively eliminates the occurrence of a bowing state in the waves.
A catamaran of stable navigation in which a bow buoyancy part 5 for generating a lifting force by generating buoyancy between the left and right bow parts 4 of the catamaran 1 is formed in a boat shape. Further, a bow horizontal wing 9 is installed between the left and right bow 4 of the catamaran 1, and the center upper side of the bow horizontal wing 9 is fixed to the lower surface of the bow buoyancy portion 5, so that the catamaran 1 is It is possible to navigate stably.
[Selection] Figure 1

Description

  The present invention relates to a catamaran with stable navigation in the ship field.

At present, catamaran has been widely used for passengers and cargo. The catamaran has a large distance between the two to improve stability, but the yawing motion peculiar to catamaran has occurred.

Therefore, the applicant of the present invention, as shown in Japanese Patent Publication No. 5-45478, hangs vertical wings at the center of horizontal wings laid between the left and right box keels of a catamaran, and the yawing motion peculiar to catamaran. And a comfortable catamaran has been realized.
Japanese Patent Publication No. 5-45478

However, when a catamaran encounters rough waves, a bowing state occurs in the waves, and a pitching phenomenon is likely to occur. For this reason, it has been a problem to realize a catamaran that can prevent the catamaran from being pushed into the bow during the wave and that is stable and comfortable to ride.

The present invention has been made in view of the above points, and in order to solve the above-described problems, a bow buoyancy portion for generating a lift force by lifting the bow side between the left and right bow portions of the catamaran is generated. The object of the present invention is to provide a catamaran with stable sailing, which is characterized by a protruding structure.

Another object of the present invention is to provide a catamaran with stable navigation in which a bow buoyancy portion formed in a boat shape is disposed in the center between the left and right bow portions of the catamaran.

Furthermore, the horizontal wing of the bow is installed between the left and right bows of the catamaran, the center of the bow horizontal wing is fixedly supported on the lower surface of the bow buoyancy part, and the upper surface of the bow buoyancy part is along the bottom of the ship. It is to provide a stable sailing catamaran.

In addition, a mini-bow is provided at the left and right bows of the catamaran, and a stable sailing catamaran is provided in which both ends of the horizontal wing of the bow are secured between the left and right mini-bows. There is.

The catamaran with stable sailing of the present invention has a catamaran encountering rough waves by projecting a bow buoyancy part to generate lift force by lifting the bow side between the left and right bow parts of the catamaran ship. Then, it is possible to effectively prevent the bow portion from being pushed into the waves by the buoyancy action of the bow buoyancy portion, and a stable catamaran can be realized.

Further, by arranging a bow buoyancy portion formed in a boat shape in the center between the left and right bow portions of the catamaran, it is possible to proceed with less resistance in navigation, and the effects and effects are obtained as described above.

Furthermore, the horizontal wing of the bow is installed between the left and right bows of the catamaran, the center of the bow horizontal wing is fixedly supported on the lower surface of the bow buoyancy part, and the upper surface of the bow buoyancy part is along the bottom of the ship. By disposing, the above-described bow horizontal wing can be stably mounted via the bow floating part, and the bow horizontal wing can also add buoyancy to stabilize navigation.

Furthermore, by providing mini bows on the left and right bows of the catamaran, and by fixing and supporting both side ends of the horizontal wings between the left and right mini bows, the boat shape on the bow side can be obtained. It becomes very slim, the hull resistance can be reduced, the ship speed can be increased, and the above-mentioned bow horizontal wing can be stably fixed to the mini bow so that it can travel stably as described above.

The stable sailing catamaran according to the present invention is characterized in that a bow buoyancy portion is provided between the left and right bow portions of the catamaran to raise the bow side with buoyancy to generate a force.

As shown in FIGS. 1 to 3, the catamaran 1 with stable navigation is a boat-shaped body 3 on the left and right sides of the lower part of the hull 2.
Are arranged symmetrically on the left and right sides, and a bow buoyancy portion 5 for raising the bow side by buoyancy is generated in the center of the bow portion 4 of the left and right fuselage 3 to project the catamaran 1 When he encounters rough waves,
It is possible to effectively prevent the bow 4 from being pushed into the waves.

The bow buoyancy portion 5 can be formed of a light metal material such as aluminum material in an appropriate shape to generate its action, and can reduce the running resistance of the catamaran 1 as much as possible. It is preferable that the boat has a required boat shape.

The bow buoyancy part 5 has a width of 1/6 to 1/2 of the center of the fuselage 3, preferably 1/4.
~ 1 / 3rd, the length is 4-10 times the width or 1 / 20-1 / 5th of the captain, preferably 4-5 times the width or 1 / 10th to 1 / 8th of the captain Therefore, it is preferable to arrange the ship body-like smooth boat-shaped streamline from the upper part of the bow part 4 to the ship bottom 6 part between the trunks 3. The width of the bow buoyancy part 5 is narrower than 1/6 between the centers of the fuselage 3, or the length is 4 times the width or 1/20 of the captain.
If the length is shorter than that, the effect of raising the bow side by buoyancy is small, and if it is wider than 1/2 of the width or longer than 1/5 of the length of the ship, the wave-forming resistance is increased, which is not preferable.

1 and 3, the left and right bow portions 4 are each provided with a mini bow 7 projecting forward by a predetermined amount and arranged symmetrically so that the bow shape on the bow side becomes very slim, and the hull resistance Is reduced, the ship speed can be increased, the catamaran 1 can be stably driven, and the inside of the bulging part 8 bulging laterally above the mini bow 7 is provided. Constructed the horizontal wing 9 on the bow,
In particular, the center upper side of the bow horizontal wing 9 is fixed and supported on the lower surface of the boat-shaped bow buoyancy portion 5 so that it can be firmly erected. The bow horizontal wing 9 can be arranged as a known wing shape with a predetermined inclination angle.

In addition, although the above-mentioned bow buoyancy part 5 was mounted | worn with only one in the center between the bow parts 6, if necessary, it is also possible to mount multiple (for example, 2 thru | or 3 pieces as a whole) symmetrically, The shape, size, etc. can be appropriately selected in consideration of the balance of the hull 2.

10 is a keel box arranged along the mini bow 7 from the bottom of the fuselage 3 of the hull 2, 11 is a horizontal wing constructed between the left and right keel boxes, and 12 is a vertical wing suspended in the center. Therefore, it can also be disposed on the rear side of the hull 2.

1 to 3 show an embodiment of the present invention. As shown in FIGS. 1 to 3, the catamaran 1 has a bow buoyancy portion 5 for generating a lifting force at the center of the bow portion 4 of the left and right fuselage 3 by buoyancy, and the same material as the hull 2. It is formed in the shape of a boat of the ship body with the aluminum material, and its center line is aligned with the center line of the catamaran 1 and its upper surface is welded along the bottom 6 to attach these left and right bow parts. 4, as shown in FIGS. 1 to 3, the mini bow 7 is projected forward by a predetermined amount and arranged symmetrically so that the catamaran 1 can travel stably.

The bow buoyancy part 5 has a width B of approximately ¼ width between the centers of the fuselage 3, and its length is four times the width B or 1 / 8th of the ship length, and the bottom of the ship bottom 4 It is welded and attached as a smooth boat-shaped streamline shape over 6 parts.

Further, as shown in FIG. 1 to FIG. 3, the mini bow 7 protrudes forward by a predetermined amount and is arranged symmetrically on the left and right bow portions 4, and bulges to the side of the mini bow 7. A bow horizontal wing 9 is erected between the insides of the bulging portion 8, and in particular, the upper center side of the bow horizontal wing 9 is firmly fixed to and supported by the lower surface of the boat-shaped bow buoyancy portion 5. It is erected.

In this way, the catamaran encounters rough waves by disposing the bow buoyancy portion 5 for generating a lifting force by raising the bow portion 4 side of the catamaran 1 between the bow portions 4 of the catamaran 1. Then, it is possible to effectively prevent the bow 4 from being pushed into the waves, and to realize the catamaran 1 having a stable and comfortable ride.

Further, a horizontal horizontal wing 9 is installed between the left and right mini bows 6 of the catamaran 1 and the center upper side of the horizontal wing 9 is fixed to the lower surface of the bow buoyancy unit 5 so that the horizontal portion of the bow is horizontal. The wing 9 can be mounted stably via the bow floating portion 5, and navigation can be stabilized by adding buoyancy with the bow horizontal wing 9.

Furthermore, since the mini bow 7 portion is slightly protruded forward from the bow portion 4, the boat shape on the bow side becomes very slim, and the wave resistance and the hull resistance of the bow wave are reduced. In addition, the waterline of the ship can be made longer and the speed of the ship can be increased, so that the ship can travel stably. Mini bow 5
Is the one that protrudes about 1 to 2 m of the trunk length of the catamaran 1 from the bow portion 4 forward, and the waterline can be lengthened to increase the ship speed.

Although the bow buoyancy part 5 is fixed between the bow parts 4, an appropriate mode is adopted such that a predetermined amount can be freely inserted into and removed from the ship bottom 6 via an entry / exit device such as a hydraulic device to cope with rough waves. It can also be implemented, and is not limited to a new ship, but can be modified and applied to a conventional one.

A schematic bottom view of a catamaran where a part of one embodiment of the present invention is omitted, Side cross-sectional view of the bow side part partially omitted, The front view which abbreviate | omitted a part of bow part same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Catamaran 2 ... Hull 3 ... Torso 4 ... Bow part 5 ... Bow buoyancy part 6 ... Ship bottom 7 ... Mini bow 9 ... Bow part horizontal wing

Claims (4)

A stable catamaran characterized by a bow buoyancy part projecting between the left and right bow parts of the catamaran to lift the bow side with buoyancy and generating a force. The catamaran of stable navigation according to claim 1, wherein a bow buoyancy portion formed in a boat shape is disposed in the center between the left and right bow portions of the catamaran. A horizontal wing is installed between the left and right bows of the catamaran and the center of the bow horizontal wing is fixedly supported on the lower surface of the bow buoyancy part, and the upper surface of the bow buoyancy part is arranged along the bottom of the ship. Claim 1 or 2
A catamaran with stable navigation as described in 1. 4. A mini bow is provided at each of the left and right bows of the catamaran, and both side ends of the horizontal wing of the bow are respectively fixed and supported between the left and right mini bows. A stable catamaran.

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