JPH03186494A - Half-submerged water surface cruising ship - Google Patents

Abstract

PURPOSE:To improve stability when a lower hull is floated by separately providing buoyancy structure bodies applying a restoring force during mooring, and storing them in a hull or removing them to the outside of the hull during cruising in a half-submerged water surface cruising ship strut-connected with an upper hull and the lower hull. CONSTITUTION:When a catamaran hull 4 is adjusted for a draft line by a filling/ draining device moored at the unstable draft line of the hull between draft lines WL-1 and WL-3, separate buoyancy structure bodies 8' are fitted to the hull 4 to stabilize the hull 4. When the hull 4 is to cruise at the draft line WL-2, the buoyancy structure bodies 8' are rotated and stored like buoyancy structure bodies 8'' by the right and left switch type storing devices E via pins installed on the hull 4. The stability when a lower hull is floated can be improved.

Description

[Detailed Description of the Invention] <Industrial Application Field> The disclosed technology ensures hull stability of semi-submersible surface-going vessels including monohull and twin-hull types that do not have hull stability. It belongs to the technical field of hull structure that equips the hull with an auxiliary buoyancy structure for the purpose of buoyancy.

SUMMARY OF THE INVENTION The present invention relates to a semi-submersible surface-cruising vessel which sails on the surface of the water in a floating state via struts, and which is capable of moving at ultra-high speeds on the surface of the sea due to waves. This invention relates to a semi-submersible surface-going vessel that is configured so that the preliminary buoyancy of the struts alone does not have the ability to right itself against a tilted hull in order to avoid oscillations accompanied by large accelerations, and in particular, The ship has a buoyant structure separate from the ship's hull that is capable of self-righting, has reserve buoyancy, and can be freely injected with water, and the buoyant structure can be attached to, stored in, and removed from the ship. This invention relates to a semi-submersible surface-going vessel.

<Background of the Invention> As is well known to those skilled in the art, in semi-submersible surface-going vessels that do not have self-righting performance only with the preliminary buoyancy of the struts interposed between the upper and lower hulls, when entering or exiting a port, Vessels that are able to float on struts at low speeds or when stopped, are forced into deep water with the upper hull floating, or cannot convert from deep water with the upper hull to float on the lower hull. There are operational inconveniences.

This monohull type vessel is also affected when the vessel is stopped or at low speed in a stagnant state where the hull is unstable due to strut levitation.
It is desired to take measures to stabilize the hull even in a state where the hull is unstable on the lower hull.

<Prior art> As is well known, ships have been used as a means of water transportation for a long time, and in order to improve sailing efficiency and reduce sailing resistance as much as possible, single-hull ships have struts between the upper and lower hulls. and twin-hulled semi-submersible surface-going vessels were developed.
It is starting to be put into practical use.

Semi-submersible surface-going vessels, including single-hulled and twin-hulled types, have been developed since their early days as vessels suitable for small vessels, and are capable of navigating waves at extremely high speeds. In order to avoid the ship's rocking, which is most avoided, a structure is required that does not have the ability to right itself against the ship's heel using only the reserve buoyancy of the struts when the ship is floating on the struts.

<Problem to be solved by the invention> As described above, this type of ship, which does not have self-righting properties only with struts, cannot become stagnant due to strut levitation when traveling at low speed or at a standstill. , the upper hull had no choice but to float to the surface and fall into deep water.

In the early days when ships were small, even the stagnant water caused by the floating of the upper hull did not cause any problems in entering and exiting the port or berthing, but as time passed, ships became larger as ocean-going ships in order to respond to mass transportation. As it grows, the struts at the bottom of the upper hull and the struts occupied by the lower hull become larger,
In the deep waters of the upper hull, it has become impossible to enter or leave the port or berth.

<Object of the Invention> The object of the present invention is to provide a technical solution to the problem of the structure of a ship, which is said to not have the ability to right itself in response to a heeling of the ship due to the preliminary buoyancy of the struts based on the above-mentioned prior art. The challenge was to attach a buoyant structure to the hull that has sufficient reserve buoyancy to ensure hull stability even when the hull is tilted in the floating state of the lower hull of a monohull ship. The buoyancy structure is an excellent semi-finished structure that can be stored in the hull above the water surface or removed from the hull so that it does not interfere with the ship while it is in motion. The aim is to provide a submersible surface-going vessel.

<Means/effects for solving the problem> In order to solve the above-mentioned object, the structure of the present invention, which is summarized in the claims, is to solve the above-mentioned problem, and to solve the above-mentioned problem. , Two or more lower hulls and an upper hull above the water surface are integrally connected via the water surface by struts. Similar to the longitudinal rudder, which changes the course of the hull while sailing, it is It has a transverse rudder that controls the inclination, a propulsion device, and a water injection device that adjusts the surfacing water of the hull. A semi-submersible surface-going vessel that has a structure that does not have the ability to right itself, and has a hull structure that does not have the ability to right itself against a heel while the vessel is stopped or at low speed. A buoyancy structure that has enough reserve buoyancy to right itself against a ship's heel in a stable stagnant state, and that can be freely injected with water, is attached to the ship's hull separately from the ship's hull. During navigation, the buoyancy structure is equipped with at least one of a device for storing it in the hull above the water surface and a device for removing it from the hull, so that the buoyancy structure can be carried over the surface of the waves without experiencing turbulence accompanied by large acceleration motion. Technical measures have been taken to solve the inconveniences and difficulties of large semi-submersible surface-going ships entering and exiting ports and berthing, as they travel at high speeds, and to realize the possibility of practical practical operation of ships. It is something.

<Example> Next, an example of the present invention will be described below based on the drawings.

The embodiment shown in FIG. 1 is a side view of an embodiment in which a buoyancy structure, which is the central point of the invention, can be installed and stored in the catamaran hull of a semi-submersible surface-going vessel according to the invention. The figure is a sectional view thereof.

In the diagram, 1 is the lower hull, 2 is the upper hull that is integrated at the top, 3 is the strut in the middle of both, 4 is the hull, and 5 is the rear of the lower hull 1! 2-keeled longitudinal rudder, 6
is a horizontal rudder 7, is a predetermined propulsion device at the rear of the lower hull 1, 8
′ is a buoyancy structure attached to the hull of the ship while the ship is at rest.
is a buoyant structure housed in the hull of a ship during navigation, and E
is an openable/closeable storage device which is pivotally installed at the upper part of the upper hull 2 in an openable/closable manner and is used for attaching the floating J structure 8.8''.

-shi-1 is the main line of levitation of lower hull 1 that allows a stopped ship to at least maintain its self-righting ability against the ship's heel, Wl-2 is the water line when the ship is moving, and WL-3 is stopped. The floating water line of the upper hull 2 is capable of maintaining at least self-righting property with respect to the inclination of the hull of the ship in the state, and in this invention, the twin Fa type hull of the ship is one sea 3 When anchoring or adjusting the waterline using a water injection device, the ship is stabilized by the buoyancy structure 8' attached to the hull, and the ship is - When sailing at -L-2, the buoyant structure 8' is installed on the ship's hull by the left and right opening/closing type storage device E through the pin pivot installation, so that when the ship is stopped, the waterline -L-1°W
It is designed so that it can be housed in any of the stuttering states of 1-3.

Figure 3 shows a buoyant structure 8' on the catamaran hull of the ship of this invention.
, 8' is attached and stored in a manner that can be opened and closed, and is a side view of an embodiment different from the embodiments shown in FIGS. 1 and 2, and FIG. 4 is a sectional view thereof.

FIG. 5 shows yet another embodiment of mounting and storing buoyant structures on the catamaran hull of a ship according to the present invention, in which the first and second buoyant structures 8' and 8' are moved up and down by a vertically lifting storage device using a jack-up mechanism. FIG. 6 is a side view of the embodiment showing how it is installed and stored in the same boat as the embodiment shown in the figure, and FIG. 6 is a sectional view thereof.

It should be noted that, at the time of the present invention, the opening/closing type storage device E and the elevating type storage device J can be easily designed as industrial structures that can be appropriately designed by those skilled in the art.

FIG. 7 is a sectional view of an embodiment of a device for mounting and storing a buoyancy structure when the ship of the present invention has a single f@ type hull,
Figure [Here, the buoyant structure is installed as a buoyant structure 8' in the waterline-sea-3 state of the ship by means of a left-right opening/closing storage device E via a pin pivot installed on the ship's hull, and ,
The buoyant structure 8' is shown in the stowed position during cruising in a stagnant state at waterline -L-2.

FIG. 8 shows a buoyant structure 8' on the catamaran hull of the ship of the present invention.
.

In the figure, 81 indicates the buoyancy structure during installation and removal, BM is the boom device of the hull, CR is the floating crane, and PN is the pontoon, which can be freely designed by those skilled in the art. be.

In the figure, the buoyancy structure loaded on the pontoon PN is attached to the hull in the state 8' after passing through the state 81 by the boom device BM, and the operation is removed from the hull, and
A similar operation is performed by the floating crane CR while the ship is stopped and the water line WL-3 is in a stagnant state.

Incidentally, the above-mentioned operation can be carried out even in a stuttering state of water line-1-1.

As described above, the buoyancy structure of the twin WA type ship of the present invention shown in FIGS. 1 to 6 and 8 to 9 is attached to the hull (),
How to store it in the hull and remove it from outside the hull, and
This aspect of the device is also applicable to a monohull ship, and the operation of this device in a monohull ship is carried out in the eye-3 condition, which is the whirling rotation of the hull stability of the monohull ship.

<Effects of the Invention> As described above, when a semi-submersible surface-going vessel enters or departs a port, or is at low speed when berthed, or is stopped, in the case of a catamaran, the upper hull floats from deep water to the lower hull floats. It has the disadvantage that it is not possible to switch between shallow and shallow waters.
Additionally, monohull ships have the disadvantage of not being able to float in the lower hull, but by equipping the vessel with the buoyancy structure according to the present invention, these inconveniences and inconveniences can be eliminated. Therefore, even when the ship is stopped or at low speed, it can be in any watery state, and therefore the excellent effect of being able to use the ship in the most efficient manner is achieved.

[Brief explanation of drawings]

The drawings are detailed explanatory diagrams of the present invention, and FIG. 1 is a side view of one embodiment showing the aspect of equipping a buoyancy structure to the twin W4 type hull of the semi-submersible surface-going vessel of the present invention, and FIG. is a sectional view thereof, FIG. 3 is a side view of another embodiment, FIG. 4 is a sectional view of the same,
Fig. 5 is a side view of another embodiment, Fig. 6 is a sectional view of the same, and Fig. 7 is a side view of another embodiment.
The figure is a cross-sectional view of one embodiment showing the aspect of equipping a buoyancy structure on the monohull type hull of the ship of the present invention, and FIG. A side view of the embodiment, and FIG. 9 is a sectional view thereof. 1...Lower hull 2...Upper hull 3...
・Strut 4...Hull 5...Rudder
6... Lateral rudder 7... Propulsion device 8'... Buoyant structure 8' when the vessel is stopped... Buoyant structure 8M stored while the vessel is running...
- Buoyant structure E during installation and removal... Buoyant structure installation is done using storage device electric... Buoyant structure installation is done using storage jack-up device T... Buoyancy structure number is removal device -1-1 ...Main line WL-2 floating on the lower hull...Water line 11L-3 during navigation...Main line 8M floating on the upper hull...Boom device CR on the hull...Floating crane PN...Ij ? Ntoon

Claims (1)

[Claims] At least one lower hull that is below the water surface and an upper hull that is above the water surface are integrally connected via the water surface by a strut in a sailing state. It has a transverse rudder and propulsion device to control the hull, and a water injection device to adjust the surfacing water of the hull, and has the ability to right itself when the hull is tilted in at least one of the vertical and horizontal directions using only the preliminary buoyancy of the strut. In a semi-submersible surface-going vessel, which has a structure that prevents the vessel from tilting, when the vessel is stopped, the vessel does not have the ability to right itself against a heel, and is in a stammering state with an unstable hull. A buoyant structure that has sufficient reserve buoyancy to have the ability to right itself and that can be freely filled with water is attached to the hull separately from the hull, and when the ship is running, the buoyant structure is kept on the water surface. A semi-submersible surface-going vessel characterized by having at least one of a device stored in the upper hull and a device detachable outside the hull.