JPH06270888A - Underwater observation ship - Google Patents

Abstract

PURPOSE:To float a hull with the help of negative pressure when observation windows are broken and keep it safe in a small and light structure by providing the observation windows on airtight closing members to cover a space over a water surface and providing an exhaust device to replace air in a space covered with the closing members into water. CONSTITUTION:When a water observation ship arrives at a water area as intended for water sightseeing, watertight partition walls 13, 14 at the stem and the stern between double barrels are closed, while a valve 17 is open for an exhaust device 16 to exhaust air in a double-barrel space 15 to the outside of the ship. Then, a water level between the double barrels rises and the whole ship is subjected to a deeper draft so that water observation can be made through submerged observation windows 11, 12. At this time, if the observation window 11 is broken, air flows from the inboard 21 into the double-barrel space 15 under negative pressure to float the ship so that the observation window 11 is reset over a draft level. If the observation window 12 is broken, a valve 19 is open with a flood detector 23 and air flows from the outboard 20 into the double-barrel space 15 so that the ship is floated and the observation window 12 is reset over the draft level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater observation ship capable of observing underwater such as undersea from inside a ship.

[0002]

2. Description of the Related Art Conventionally, as an underwater sightseeing boat that has an observation window under the water and is used by an unspecified number of passengers, except for a submersible built to meet the "Special Submarine Standard" of the Ministry of Transport,
As shown in FIG. 5, in order to make the observation window 1 below the water surface 5, a weight 3 is mounted below the cabin 4, and even when the observation window 1 below the water surface is damaged and flooded, There is one that allows passengers to evacuate by being designed so as to avoid sinking by the floating body 2 and to stop the inundation of the passenger compartment 4 at a certain depth.

[0003]

However, in the underwater sightseeing ship shown in FIG. 5, in order to deepen the water of the ship to the water where the observation window 1 is below the surface of the water, it is necessary to considerably lighten the ship that should be lightly constructed. It is necessary to mount a weight 3 to make the ship heavier, and to avoid sinking when the observation window 1 under the water is damaged, and to maintain the safety of passengers. However, there is a problem that it is necessary to increase the size of the hull in order to give a larger buoyancy due to the weight 3 additionally mounted.

The present invention is intended to solve the above problems. That is, the present invention eliminates the need to additionally mount a weight, and it is not necessary to increase the size of the hull attached to the weight, and prevents water from entering the ship even if the observation window is damaged. The purpose is to provide an underwater observation ship.

[0005]

In order to achieve the above object, the present invention has an airtight enclosure member covering a space above the water surface, and a transparent plate is provided in a part of the enclosure member. And an exhaust device for replacing the air in the space covered by the surrounding member with water.

[0006]

According to the present invention, there is provided an airtight enclosure member covering a space above the water surface, and an observation window in which a transparent plate is fitted in a part of the enclosure member. Since it has an exhaust device that replaces the air in the space covered by the surrounding member with water, first, after reaching the water area to be observed, the air in the space covered by the surrounding member is exhausted by the exhaust device. When exhausted, the space becomes negative pressure and water flows into the space. That is, the air in the space replaces water. Then, the outer surface of the observation window as seen from the inside of the ship comes into contact with water, and it becomes possible to observe underwater from the inside of the ship.

Here, if the observation window is damaged, the window becomes a communication hole, and the negative pressure described above is broken to a positive pressure, so that the replaced water flows out, and at the same time, the air inside the ship is damaged. It flows into the space through the window and is restored to its original state. Therefore, even if the observation window is damaged, it will not flood into the ship.

[0008]

1 to 3 show a first embodiment of the present invention. 1 is a cross-sectional view near the center of the hull in a sailing state, FIG. 2 is a cross-sectional view near the center of the hull in an underwater sightseeing state, and FIG. 3 is a plan view showing a space between catamaran.

In FIGS. 1 and 2, 11 is an observation window between catamaran, 12 is a portside observation window, 13 is a watertight partition plate at the bow, 14 is a watertight partition plate at the stern, and 15 is a space between catamaran Department,
Reference numeral 16 is an exhaust device, 17 is a valve, 18 is an outboard, 19 is a valve, 20 is an outboard, 21 is a cabin, 22 is a float-type water shutoff valve, and 23 is a water intrusion detection device. That is, in FIG. 1, the observation window 11 between the catamaran and the observation window 12 on the outboard side are located above the water surface in a normal dwarf state, which is not different from an ordinary catamaran and is intended for safe underwater sightseeing. You can navigate to the water area. After arriving in the water area, the watertight partition plates 13 and 14 on the bow and stern of the catamaran (see FIG. 3)
Closed, the valve 17 is opened, and the air in the space 15 between the two bodies is exhausted by the exhaust device 16 such as a vacuum pump or an intake fan.
When it is discharged to 8, the water level between the catamaran rises, and at the same time, the water level of the entire ship becomes deeper, and the underwater state can be observed through the observation windows 11 and 12 which are in the state of FIG. By slowly sailing in this state, passengers can enjoy changes in the underwater scenery. The observation window 11 discharges the air in the space 15 between the catamaran and is always submerged in the water when the water level between the catamaran rises. Therefore, it is possible to easily observe the underwater regardless of the stiff water of the entire ship. become. When the underwater sightseeing is finished, the valve 19 is opened, so that the pressure between the two bodies is negative, so that the air automatically flows in from the outboard 20 and returns to the original water-saving state W1 (Fig. 1). It can navigate as safely as a catamaran.

When the observation window 11 is damaged in the underwater observation state shown in FIG. 2, the conventional underwater sightseeing boat cannot escape the flooding. However, in this embodiment, the negative pressure is generated between the twin trunks (from the cabin 21 to the twin trunks). Since the pressure is low), no water will enter, and conversely the air inside the ship 21 will flow between the catamarans, and the ship will immediately levitate due to its own buoyancy, and the damaged window 11 will be the water drain W1.
Appears above and returns to a safe state. Further, if the observation port 12 on the outside port is provided and it is damaged, the intrusion detection device 23 detects the infiltration at the same time electrically or mechanically, and when the valve 19 is fully opened automatically, the air from the outboard 20 is released. Flows into the space between the catamaran, and the ship immediately rises by its own buoyancy, and the damaged window 12 appears on the water and returns to a safe state. The observation window 11 discharges the air in the space 15 between the two bodies,
When the water level between the catamaran rises, it is always submerged in the water, and regardless of how the water on the entire ship can be observed, it becomes easy to observe underwater, so even passengers in shallow water can observe underwater. Can be made.

As described above, according to the present embodiment, by making a light ship which is an underwater observation ship, it contributes to the reduction of the construction cost and the operation cost. The submersible removes the ballast in an emergency or compresses the compressed air in the ballast tank by providing a state that allows underwater observation and by injecting the air between the catamaran that has been forced out even when there is a risk of damage to the observation window. By injecting and discharging ballast water, it is possible to return to a physically safe state by the same effect as that of an emergency surfacing.

In the above embodiments, the catamaran type having a watertight partition that can be opened and closed has been described in the opening of the bow and stern, but the hull itself has a bowl-shaped space or the periphery or part of the vessel. The same effect can be obtained also in a boat form having an enclosed structure that forms a similar space.

FIG. 4 shows a second embodiment of the present invention.
In this embodiment, the closing member 2 is provided outside the observation window 12 on the port side.
4 is provided, and the air in the space covered by the surrounding member 24 is replaced with water by the exhaust device 16 for observation, which is the same effect as the first embodiment. .

[0014]

As described above, according to the present invention,
It has an airtight enclosure member covering a space above the water surface, and has an observation window in which a transparent plate is fitted in a part of the enclosure member, and is covered by the enclosure member. Since it has an exhaust device that replaces the air in the space with water, first, when the air in the space covered by the enclosure member is exhausted by the exhaust device after reaching the water area to be observed, the space is negatively affected. Water becomes pressure and water flows into the space. That is, the air in the space replaces water. Then, the outer surface of the observation window as seen from the inside of the ship comes into contact with water, and it becomes possible to observe underwater from the inside of the ship.

Here, if the observation window is damaged, the window becomes a communication hole, the negative pressure is broken and the pressure becomes positive, and the displaced water flows out, and at the same time, the air inside the ship is damaged. It flows into the space through the window and is restored to its original state. Therefore, even if the observation window is damaged, it is safe because it does not flood the inside of the ship. As described above, according to the present invention, it is not necessary to additionally mount a weight, and it is not necessary to increase the size of a hull to be attached, so that it is possible to reduce construction costs and operation costs.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view of the vicinity of the center of a hull of an underwater observatory ship according to a first embodiment of the present invention in a sailing state.

2 is a front cross-sectional view of the vicinity of the center of the hull of the underwater observation ship of FIG. 1 in an underwater observation state.

3 is a plan view showing a space between catamaran of the underwater observation ship of FIG. 1. FIG.

FIG. 4 is a front sectional view of an underwater observation ship according to a second embodiment of the present invention.

FIG. 5 is a front sectional view showing an example of a conventional technique.

[Explanation of symbols]

 11 Observation window between catamaran 12 Observation window on the outside 13 Watertight partition plate at the bow 14 Watertight partition plate at the stern 15 Space between catamaran 16 Exhaust device 24 Enclosure member

Claims (2)

[Claims] 1. An airtight enclosure member covering a space above the water surface, and an observation window in which a transparent plate is fitted in a part of the enclosure member, and the enclosure member. An underwater observation ship having an exhaust device for replacing air in a space covered by water with water. 2. The underwater observation ship according to claim 1, wherein the enclosure member comprises a multi-body floating body, a multi-body connecting floor plate, and a partition plate at the bow and a partition plate at the stern which are openably and closably provided.