JPH111197A - High speed boat having unsinkable structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent resistance of waves and oscillation of the left and right directions and to guarantee a stable high speed navigation by mounting a floating body on internal surface of a hull, providing a conical wave projecting body projecting forward on the bow and further providing a pair of projected strips for stabilization along the longitudinal direction of the hull at the outside of the bottom. SOLUTION: A water jet propulsion boat is provided with a water jet injection nozzle 4 at the stem and propulsion force is obtained by jetting water backward by driving of a driving machine 7 of a pump 6 provided on a suction duct 5. In this case, a roughly conical wave projecting body 2 is provided by being projected forward from the front end of the hull 1 and a pair of projected lines 3 for stabilization are provided in the longitudinal direction of the hull 1 at the outside of the bottom. The hull 1 is constituted into a round shape in cross section, a floating body which is constituted by a light synthetic resin material is arranged on the internal surface and a plumb bob body 10 is mounted on the bottom part. The center of gravity of the hull 1 to which the driving machine 7 of the pump 6 is added is located on the lower side of the center of a hull circle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a high-speed boat propelled by a water jet, and an object of the present invention is to provide a high-speed boat which can reduce the resistance of waves and can safely sail as an unsinkable structure. .

[0002]

2. Description of the Related Art Conventionally, various types of vessels that sail at high speed on the sea, such as hydrofoils, hovercraft, and hydroplanes, are known. In other words, hydrofoil vessels use the lift of wings provided in the water to lift the hull and reduce the resistance to waves and water.Hovercraft floats the hull with high-pressure air to reduce the resistance to waves and water. In addition, the planing boat has a shallow draft to reduce water resistance.

[0003]

However, the conventional high-speed ship as described above has a drawback that it cannot cope with strong winds and waves and cannot sail even with light wind waves. That is,
In the case of a hydrofoil, it is only necessary to raise the hull above the sea surface, but if it is too high the stability will deteriorate,
It is difficult to increase the size due to the lift obtained from the hydrofoil.

Further, it is difficult for both hovercraft and planing boats to stably float the hull on the sea surface of the waves, and none of the above can cope with wind waves.

[0005]

SUMMARY OF THE INVENTION The present invention has solved the above-mentioned conventional problems, and the gist of the invention is that suction water of a propulsion pump installed at the bottom of a ship is moved backward. In a water jet propulsion boat that is jetted and sailed, a floating body is attached to the inner surface of the hull of the hull, and a forwardly protruding conical wave cut-off body is provided at the bow, Is provided with a pair of stabilizing ridges along the longitudinal direction of the hull, and a pump for water jet injection and a driving device for the pump are provided at the bottom of the hull.

It is preferable that the floating body attached to the inner surface of the hull is made of a synthetic resin material having a small specific gravity. The overall structure of the hull is stable to waves when the cross section is substantially circular. If the center of gravity of the hull is below the center of the circle, it can be restored even if it is extremely tilted. Furthermore, if the cabin or the like is configured to be able to seal the upper structure, a completely unsinkable structure can be maintained while maintaining the floating posture.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The high-speed boat according to the present invention is constructed as described above, and has a floating body attached to the inner surface of the hull. The boat can be stably levitated by the pair of ridges. Then, at the time of sailing, since the wave cut-off body at the bow portion breaks through the waves and travels, the resistance of the waves is extremely small, and it is possible to sail at high speed.

That is, in the high-speed boat according to the present invention, the hull forms a hollow capsule-like hull, and has a function of preventing left-right swing by a ridge at the bottom of the boat. It breaks through the waves, reduces the running resistance, and can run at high speed. Also, as described in claim 4,
If the upper surface of the hull is a closed structure and the hull is configured as a semi-submerged type, the wave resistance at the water surface (draft) can be further reduced, and more stable high-speed navigation is possible. Hereinafter, the present invention will be specifically described with reference to the drawings.

[0009]

FIG. 1 is a schematic side view of a high-speed boat according to the present invention. In the drawing, reference numeral 1 denotes a hull, 2 denotes a wave cut-off body projecting forward from the front end of the hull 1, and FIG. It has a conical shape. Reference numeral 3 denotes a stabilizing ridge provided in a pair on the outside of the bottom of the ship. (See FIGS. 2 and 3)

Reference numeral 4 denotes a water jet injection nozzle provided at the stern, and a jet water suction duct 5
It is connected to. Reference numeral 6 denotes a pump provided in the suction duct 5. Reference numeral 7 denotes a driving device of the pump 6, and reference numeral 8 denotes a cabin. The cabin 8 is configured to be able to be sealed, and the hull 1 is configured to have a circular cross section as shown in FIGS. 3 and 4, and a levitation made of a lightweight synthetic resin material on its inner surface. A weight body 10 is attached to the body 9 and the bottom of the ship, and the center of gravity G of the hull 1 is combined with the driving device 7 of the pump 6.
Is located below the center of the hull circle.
FIG. 4 shows an example in which the cover of the cabin 8 is entirely a transparent plate.

The high-speed boat according to the present invention is constructed as described above, and when it is floated on the water, as shown in FIG. 1, the parting body 2 is submerged, and the hull 1 is also submerged to the cabin 8 portion. . Therefore, when the ship is sailed, the cut-off body 2 of the bow advances in the water, that is, in the waves and breaks through it, and the cabin portion behind the cut-off body 2 also has a small drafting area and has a resistance to the waves. And can sail at high speed.

In addition, there is no danger of sinking due to the levitating body 9 attached to the inner surface of the hull 1 at the time of the cruising. In addition, the ridge 3 on the bottom of the hull prevents rolling swing to the left and right, thereby enabling stable high-speed cruising.

[0013]

As described above, the high-speed boat according to the present invention has:
A floating body is attached to the hull itself to make the structure unsinkable.In case of floating, the cut-off body and the ridge prevent the wave resistance and swing in the left and right direction, and provide high-speed and stable navigation. You can run. Furthermore, as shown in the figure, it is possible to increase the stability by sealing structures such as the cabin at the upper part of the hull, providing a drive unit and a weight part at the bottom of the hull, lowering the center of gravity, and sinking the hull. In addition, the resistance of the surface wave can be further reduced, which is more effective.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a high-speed boat embodying the present invention.

FIG. 2 is a plan view of a bow portion of FIG. 1;

FIG. 3 is a cross-sectional view along the line XX of FIG. 1;

FIG. 4 is a cross-sectional view of another embodiment, in which the cabin is covered with a transparent plate as compared with FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hull 1a Hull 2 Cut-off body 3 Ridge 6 Pump 7 Driver 9 Floating body

Claims (4)

[Claims] 1. A water jet propulsion boat, in which suction water of a propulsion pump installed at the bottom of the hull is jetted rearward to sail, a floating body 9 is attached to the inner surface of the hull 1a of the hull 1. At the same time, a forwardly protruding conical wave cut-off body 2 is provided on the bow, a pair of stabilizing ridges 3 are provided on the outer side of the bottom along the longitudinal direction of the hull 1, and a bottom part is provided on the bottom. A high-speed boat having an unsinkable structure in which a water jet injection pump 6 and a driving device 7 for the pump 6 are installed. 2. A floating body 9 mounted on the inner surface of the hull 1a.
2. The high-speed boat according to claim 1, wherein the high-speed boat has a specific gravity of 1 or less. 3. The high-speed boat according to claim 1, wherein the hull 1a has a substantially circular cross section, and the center of gravity of the hull 1a is located below the center of the circle. 4. A high-speed boat having an unsinkable structure according to claim 1, wherein the upper surface of the hull 1a has a sealable structure, and the parting body 2 of the bow and the lower half of the hull 1 are submerged under normal conditions.