JPH04119292U - small high speed boat - Google Patents

Abstract

(57) [Summary] [Purpose] To improve straight-line stability and steering performance during high-speed driving, and to prevent rolling. [Structure] Projections 9, 13 or grooves 8, 10, 12, 14 extending in the longitudinal direction of the hull, at least at a position near the stern of the ship bottom 1 and at one or more positions on each of the left and right sides of the ship bottom 1.
will be established.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a small high-speed boat.

0002

[Conventional technology]

Conventional small high-speed ships have flat bottoms, or as shown in Figures 4 and 5, the bottom 1 is flat. Generally, it is almost V-shaped with a downward slope from both sides toward the center in the width direction. It was a target.

0003 In the figure, 3 is the hull, 4 is the bow, 5 is the stern, and 6 is the rudder.

0004

[Problem that the idea aims to solve]

However, in the above-mentioned conventional small high-speed boat, when the speed increases, the bow 4 lifts up to the surface of the water. away from the ship, and only the stern 5 side of the bottom 1 is submerged in the water or is in contact with the water surface. The area of the part submerged in water or in contact with the water surface is small. As a result, the straight-line stability of Hull 3 deteriorates and the ship attempts to change its course. When you turn the rudder 6, the hull 3 skids and swells outward, causing the ship to turn as expected. You may not be able to keep your course, and furthermore, Hull 3 may roll even with the slightest wave. There were problems such as the weight becoming weaker.

[0005] In view of the above-mentioned circumstances, this invention improves straight-line stability and steering performance during high-speed driving, and The purpose is to provide a small high-speed boat that can prevent rolling. It is.

[0006]

[Means to solve the problem]

The present invention provides at least one location on the bottom of the boat near the stern, and one location on each side of the bottom of the boat. It is characterized by providing protrusions or grooves extending in the longitudinal direction of the hull at the above positions. This applies to small high-speed boats.

[0007]

[Effect]

According to the present invention, at least at a position near the stern of the ship's bottom, and at each of the left and right sides of the ship's bottom. By protruding or grooved lines extending in the longitudinal direction of the hull provided at one or more positions, Straight-line stability and steering performance during high-speed driving are improved, and rolling is prevented.

[0008]

【Example】

Embodiments of the present invention will be described below with reference to the drawings.

[0009] 1 and 2 show a first embodiment of the present invention.

0010 Also, in the figures, parts similar to those shown in Figures 4 and 5 are denoted by the same reference numerals. Therefore, the explanation will be omitted, and only the configuration unique to the present invention will be explained below.

[0011] If the hull 3 is made of FRP, at least at a position near the stern 3 of the hull 1 and At the left and right positions, grooves 8, 9, and 10 extending in the longitudinal direction 7 of the hull, respectively. and a wavy portion 15 consisting of a grooved line 12, a convex line 13, and a grooved line 14. do.

0012 The positions where the corrugated parts 14 and 15 are provided are at least in the range from the center of the hull 3 to the stern. Also, the unevenness of the grooves 8, 10, 12, 14 or the protrusions 9, 13 is in the longitudinal direction of the hull. It shall be installed symmetrically with respect to the center line of the direction.

[0013] Next, the operation will be explained.

[0014] As the speed of the hull 1 increases, the bow 4 rises above the water surface, and only the stern 5 side of the bottom 1 Even if the ship is submerged in water or in contact with the water surface, the All or most of the corrugated parts 14 and 15 provided near the stern 3 are always underwater. It is either submerged in the water or kept in contact with the water surface.

[0015] Since the corrugated portions 14 and 15 extend in the longitudinal direction 7 of the hull, when traveling at high speed, The corrugated portions 14 and 15 guide the hull 1 in the hull longitudinal direction 7, and as a result, the hull 1 is straight Improved stability.

[0016] Furthermore, the rudder 6 is steered sharply by the guiding action in the hull longitudinal direction 7 by the corrugated parts 14 and 15. This prevents the hull 1 from bulging outwards and skidding, allowing you to take the course you want. This improves steering performance.

[0017] Moreover, since the corrugated parts 14 and 15 are provided at the left and right positions of the bottom 1, the ship The body 1 is stabilized against horizontal shaking, and the occurrence of rolling is reduced.

[0018] FIG. 3 shows a second embodiment of the present invention, in which the hull 3 is made of steel, and the bottom 1 has a corrugated part. Instead of forming ridges 14 and 15, protrusions 16 and 17 are welded to the bottom 1. Other than that, the structure is the same as that of the above embodiment, and the same operation and effect can be obtained. be able to.

[0019] Note that the present invention is not limited to the above-mentioned embodiments; It is possible to use either one or the other, and the number of concave and convex lines can be increased as necessary. And, various other changes may be made within the scope of the gist of the invention. Of course.

[0020]

[Effect of the idea]

As explained above, according to the small high-speed boat of the present invention, straight-line stability during high-speed running is achieved. It has the advantage of being able to improve steering performance and steering performance, and prevent rolling. It can have a great effect.

[Brief explanation of drawings]

FIG. 1 is a side view of a first embodiment of the present invention.

FIG. 2 is a view taken along arrow II-II in FIG. 1;

FIG. 3 is a rear view of a second embodiment of the present invention.

FIG. 4 is a side view of a conventional example.

FIG. 5 is a view taken along the line V-V in FIG. 4;

[Explanation of symbols]

1 Bottom of the ship 5 Stern 7 Hull longitudinal direction 9, 13, 16, 17 Convex stripes 8, 10, 12, 14 grooves

Claims (1)

[Scope of utility model registration request] 1. A small high-speed boat, characterized in that a protrusion or groove extending in the longitudinal direction of the hull is provided on the bottom of the boat, at least at a position near the stern and at one or more locations on each of the left and right sides of the bottom.