JPS628881A - High-speed boat provided with torpede-shape submerged body - Google Patents

Abstract

PURPOSE:To prevent the bow of a boat from diving into waves during cruising on wavy sea, by forming a submerged body such that the distance between a designed full draft and a chine is not less than that between the bottom of the submerged body and the full draft and further the width of a main hull at the draft thereof is not less than that of the submerged body. CONSTITUTION:A submerged body 1 is formed such that the vertical distance h1 between a designed full draft W and a chine 2 is not less than the vertical distance h2 between the bottom 1a of the submerged body 1 and the designed full draft W. Accordingly, there is no possibility of the crest top of any wave exceeding the chine 2. Further, the rise-up of the water surface due to the submerged body ascending and descending in the wavy sea is so set that the width b1 of a main hull 3 at the designed full draft W is not less than the width b2 of the submerged body 1. Accordingly, the crest top of any wave does not exceeds the chine 2. As a result it is possible to prevent a deck on the bow of the boat from being covered with water during cruising on wavy sea.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high-speed boat, and particularly to a high-speed boat having a torpedo-shaped submerged body under the bottom of the bow.

[Conventional technology]

In order to reduce the hull motion of high-speed boats in waves, a technology has been developed in which a torpedo-shaped submerged body is mounted under the bottom of the bow section via struts, which greatly improves the seaworthiness of high-speed boats. It is supposed to be done.

[Problem that the invention seeks to solve]

By the way, in the conventional high-speed boat with a torpedo-type submerged body as described above, although the vertical movement of the hull in waves can be reduced due to the action of the submerged body, the hull does not move on the wave surface, so it is difficult to prevent the bow from plunging into the waves. However, due to poor visibility and a rise in the center of gravity due to flooding, the overall seaworthiness of the ship may actually deteriorate.

The present invention is an attempt to solve these problems, and aims to develop a torpedo-type ship light that prevents the ship's light from crashing into the waves when sailing in waves and reliably improves seaworthiness. The purpose is to provide a high-speed boat with a submersible body.

[Means for solving problems]

For this reason, the high-speed boat with a torpedo-shaped submersible body of the present invention is provided with a torpedo-shaped submersible body attached to the lower side of the bottom of the bow section via a strut, and is mounted on the side surface of the bow section almost along the ship's lightboard arc. A chine line is formed, and the vertical distance between the planned load water line and the chine line is greater than the vertical distance between the bottom of the submerged body and the total iii'f4 loading water line near the front end position of the submerged body. It is characterized in that it is formed so that it does not become smaller, and the width of the main hull along the planned load water line in the vicinity of the attachment part of the submerged body is formed so that it does not become smaller than the width of the submerged body.

[For production]

In the above-described high-speed boat with a torpedo-type submerged body of the present invention, the vertical distance between the planned load waterline and the chine line near the front end of the submerged body is less than the vertical distance between the bottom of the submerged body and the planned load waterline. Since the peak of the wave surface is formed so that it does not become small, there are fewer cases where the top of the wave surface reaches above the chine line, and the swelling of the water surface caused by the submerged body moving up and down in the waves is Since the width of the main hull along the planned load waterline is not smaller than the width of the submerged body, it is less likely that the main hull will reach above the chine line.

As a result, when the vessel is sailing in waves, flooding of water onto the hull deck, which is conventional, can be sufficiently prevented.

〔Example〕

Hereinafter, a high-speed boat with a torpedo-type submersible body as an embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a perspective view thereof, Fig. 2 is a side view thereof, and Figs. FIG.

As shown in Figures 1 to 3, a strut 4 extending downward from the main hull 3 is provided at the bottom of the bow of this high-speed boat, and a torpedo-shaped submerged body 1 is attached to the lower end of this strut 4. There is.

Also, on the side of the bow, there is a sheerforth.
A chine line 2 is formed substantially along the ward.

Near the front end of the submerged body 1, the vertical distance between the planned load water line W and the chine line 2 is the vertical distance h2 between the submerged body bottom 1a and the planned full draft l1AW.
It is formed so that it does not become smaller than the

Further, the width b of the main hull 3 along the planned load water line W in the vicinity of the attachment portion of the submerged body 1 is formed not to be smaller than the width b2 of the submerged body 1.

In addition, the reference numeral 5 in FIG. 2 indicates a propeller, and 6 indicates a rudder.

A high-speed boat with a torpedo-type submersible body as an embodiment of the present invention includes:
With the structure described above, the chine line 2 at the bow part is formed at a sufficiently high position, so when this high-speed boat is sailing in waves, the top of the wave surface is above the chine line 2. It will arrive less often.

Moreover, the swelling of the water surface caused by the submerged body 1 moving up and down in waves is as described above (width Il +
is formed so as not to be smaller than the width b2 of the submerged body 1, so that it is less likely to reach above the chine line 2.

In this way, when sailing in waves, the bow of the ship will not be pushed into the waves, and water will not flood onto the hull deck, ensuring visibility from the bridge, and the center of gravity due to flooding. This avoidance of the increase in tS, combined with the action of the torpedo-shaped submerged body, results in improved tS bladder performance.

〔Effect of the invention〕

As described in detail above, according to the high-speed boat with a torpedo-type submerged body of the present invention, a chine line is formed on the side surface of the bow portion so as to substantially follow the bow arch, and near the front end position of the submerged body, The vertical distance between the planned load waterline and the chine line is formed so that it is not smaller than the vertical distance between the bottom of the submerged body and the planned load waterline, and the main hull near the attachment point of the submerged body is It has a simple structure in which the width along the planned load waterline is not smaller than the width of the submerged body, which prevents the bow from plunging into the waves when sailing in waves, and prevents the bow from crashing into the waves. This prevents flooding of the vessel, and combined with the action of the torpedo-type submerged body, the improvement in first-pass performance is reliably maintained.

[Brief explanation of the drawing]

Figures 1 to 3 show a high-speed boat with a torpedo-type submersible body as an embodiment of the present invention. Figure 1 is a perspective view thereof, Figure 2 is a side view thereof, and Figure 3 is a −■ It is a sectional view taken along the arrow. 1. Torpedo-shaped submerged body, 1a. Bottom of the submerged body, 2. Chine line, 2a. Chine line part at the front end of the submerged body, 3. Main hull, 4. Strut, 5. Propeller. , 6... Rudder, W--Planned load waterline. Sub-Agent Patent Attorney Yoshihiko Iinuma Figure 1 Figure 3

Claims (1)

[Claims] A torpedo-shaped submerged body is attached to the bottom of the bow of the ship via a strut, and a chine line is formed on the side of the bow so as to roughly follow the bow arch, near the front end of the submerged body. The vertical distance between the planned load waterline and the chine line is formed so that it is not smaller than the vertical distance between the bottom of the submerged body and the planned load waterline, and characterized in that the width of the main hull along the planned load waterline is formed so as not to be smaller than the width of the submerged body;
A high-speed boat with a torpedo-shaped submersible body.