JPS6157476A - Type of high-speed boat - Google Patents

Abstract

PURPOSE:To reduce hull resistance due to stern wave-making, by installing a tansom type stern end outer plate and an arched bottom plate in the upper part, forming a catamaran-form stern part, and forming a stern bulge part in symmetrical waist parts of this stern part. CONSTITUTION:A trasom type stern end outer plate 6 is installed in a main ship S, while a convex arched bottom plate 2 is installed in the upper part. And, with this outer plate 2, a catamaran-form stern part is formed in the latter half part of the main ship S, and each stern bulge part 1 is formed in a symmetrical pair of waist parts 7 in this stern part. And, a propeller unit is set up inside each stern bulge part 1, and an injection nozzle 3 for the said propeller unit is installed each rear end of the said part 1. Furthermore, a rearward lower end part 5 of a side outer plate 4 in the main ship S is made to tilt toward the hull center whereby each stern bulge part 1 is made so as to not to be projected out of the breadth of the main ship S. With this constitution, in time of navigation at high speed, hull resistance due to stern wave-maing is reducible and, what is more, propulsion performance is improvable.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a ship suitable for traveling at high speed, and is particularly applicable to the wall of a high-speed ship traveling in an inland sea. [Prior Art] A conventional high-speed ship has a normal ship wall, and is formed with a transom-shaped stern end outer plate at the stern of the ship. [Problems to be solved by the invention] However, in such conventional high-speed ships, the waves generated at the stern during high-speed navigation are extremely large.
Due to this wave-making phenomenon, the hull resistance increases.
Kl...! There is l. Furthermore, when a high-speed boat such as a patrol boat patrols a group of small fishing boats that are anchored and fishing, it is required to navigate in a difficult manner, but the conventional high-speed boat described above cannot There is also the problem that the waves generated by the river can affect small ships sailing nearby. The present invention attempts to solve these 1141 problems, and aims to provide a wall for a high-speed ship that can suppress stern wave formation and reduce hull resistance. [Means for Solving the Problems] Therefore, the hull wall of the high-speed ship of the present invention is provided with a transom-shaped stern end skin plate and an arched bottom skin plate that is convex upward. A hull-shaped stern section is formed, and a stern bulge is formed on each of the left and right trunk sections of the stern section to reduce wave-making resistance. [Function] In the ship wall of the high-speed ship of the present invention, the bottom outer plate is formed in a 7-chi shape, and the stern bulge suppresses the stern wave formation, so wave formation resistance is reduced. . [Examples] Examples of the present invention will be described below with reference to the drawings.
Fig. 1.2 shows the ship wall of a high-speed ship as a first embodiment of the present invention, Fig. 1 is a perspective view thereof, Fig. 2 is a front view seen from the rear, and the main hull S is equipped with a transom-shaped stern end outer plate 6, and an upwardly convex 7
- An arch-shaped bottom outer plate 2 is provided, and the arch-shaped bottom outer plate 2 forms a twin-hull-shaped stern section in the rear half of the main hull S. A stern bulge MSl,1 is formed in each of the left and right pair of jpli7.7 like the stern part formed in this way. A water jet propulsion device (not shown) is disposed as a propulsion device in the stern bulge 1.1, and an injection port 3.3 of the propulsion device is provided at the rear end of the stern bulge 1.1. It is being In addition, the rear lower end 5 of the side shell plating 4 of the main hull S is inclined toward the center of the hull, and the stern bulges 1, 1 are designed not to protrude from the width of the main hull S. The formation of parts 1 and 1 will not cause any problems when berthing. Note that the symbol W in the figure indicates a water line. Due to the above-mentioned tank, the shape of the rear half of the high-speed boat's bottom is formed into an upwardly convex arch shape, so that the wave-making phenomenon at the transom-shaped stern part is suppressed during navigation. In addition, the stern bulge 1.1, which has a wave-dissipating effect, and the jet water jetted straight backward from the two autojet propulsors suppress the generation of stern waves that tend to spread left and right from the stern end. As a result, stern wave formation is more reliably suppressed. Therefore, during high-speed cruising, the stern wave-making greatly reduces hull resistance, improving propulsion performance, and also suppresses waves generated from the stern, which affects other vessels IKing nearby. This allows for quiet and peaceful navigation. Figure 13.4 shows the wall of a high-speed boat as a part of the @22 disaster application of the present invention, Figure 3 is its perspective view, and Figure 4 is its front view as seen from the rear. The example is also configured almost the same as the tjS1 example, but in the second example, promotion!
Ir! 1, a propeller propulsion device is used instead of a water jet propulsion device, and an arched bottom shell plate 2
A screw propeller 8 is supported by a shaft bracket 10 projecting downward from the shaft bracket 10, and a rudder 9 is disposed behind the screw propeller 8. With the above-described configuration, the ? , the 2χ example also has the same effects as the first disaster example.

【Effect of the invention】

As detailed above, according to the high-speed ship wall of the present invention,
A twin-hulled stern section is formed by providing a transom-shaped stern end outer panel and a convex 7-ch shaped bottom outer panel at the top. A simple request to form a stern bulge to reduce wave resistance. During cruising, hull resistance due to stern wave formation is reduced, making it possible to significantly improve propulsion performance. Furthermore, since the swell generated from the stern is suppressed, there is an advantage that quiet sailing is possible without affecting other ships sailing nearby.

[Brief explanation of drawings]

Figure #1.2 shows the wall of a high-speed boat as an mi embodiment of the present invention, Figure 1 is its perspective view, Figure 2 is its normal l1Ii view as seen from the rear, and fi3.4. The figure shows the wall of a high-speed boat as a second embodiment of the present invention, and the IjS
3 is a perspective view thereof, and FIG. 4 is a front view thereof as seen from the rear. 1. Stern bulge, 2. Arched bottom shell, 3.
・Spout port, 4...Ship side shell plate, 5...Rear lower end of 110gA shell plate, 6...Stern end outer plate, 7...Body part, 8...Slurry 1-propeller, 9...Rudder, 10 ...Shaft bracket, S...Main hull, W...Water line.

Claims (1)

[Claims] In a high-speed ship, a twin-hulled stern section is formed by providing a transom-shaped stern end outer panel and an upwardly convex arched bottom outer panel. Each type of high-speed boat is characterized by a stern bulge to reduce wave-making resistance.