JPH0470196B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a method for salvaging and rescuing a submersible vessel (including a submerged structure such as a submersible) from the seabed. Regarding.

[Conventional technology]

As shown in FIGS. 3 and 4, when the submersible 12 is in distress and is sitting on the seabed B, the rescue of the submersible 12 has conventionally been carried out in the following manner.

First, the rescue buoy 25 is detached from the submersible 12 via the rescue cable 23 and floated to the surface, thereby informing the mother ship 24 on the sea surface W of its position.

Then, the rescue buoy 25 is recovered on the mother ship 24, and the rescue rope 23 moored to the rescue buoy 25 is
is lifted onto the mother ship 24.

Next, the fitting alloy 22 is lowered from above the mother ship 24 to the submersible vessel 12 using the rescue rope 23 as a guide.
A lifting cable 21 is coupled to this fitting alloy 22, and when the fitting alloy 22 is fitted with a submersible boat side fitting alloy 26 on the upper part of the submersible 12, the lifting cable 21 is connected to the submersible. It is connected to a ship 12.

Thereafter, the submersible is recovered by winding up the recovery cable 21 and rescued.

[Problem that the invention seeks to solve]

However, although such conventional submersible rescue means are effective for rescuing the submersible 12 traveling at shallow depths, when rescuing the submersible 12 diving at deep depths, it is necessary to In order to float the rescue buoy 25 to W, a long rescue rope 23 commensurate with the depth is required. Naturally, a resistance force acts on the rescue rope 23 due to the water flow, and this force acts in a direction to pull the rescue buoy 25 into the water, so the buoyancy of the rescue buoy 25 must be made considerably large.

Therefore, as described above, if the rescue line 23 is lengthened and a large rescue buoy 25 is installed in order to obtain sufficient buoyancy, the submersible 12 itself becomes large, impairing the maneuverability of the submersible 12. result.

The present invention aims to solve these problems, and even when a rescue buoy detached from a submersible on the deep sea floor does not rise to the sea surface, the submersible can be retrieved easily and safely. The purpose is to provide a submersible rescue method.

[Means for solving problems]

For this reason, in the submersible rescue method of the present invention, a rescue buoy that has been raised to a required height from a submersible that has sunk on the seabed via a buoy cable is placed below the buoy or the buoy cable. 2 at sea to conduct the engagement.
The above-mentioned tangle ropes, which are installed to connect the lower ends of the weighted hoisting and retrieval lines respectively suspended from the weir vessel, are towed at a level lower than the above-mentioned height, thereby performing the above-mentioned engagement. The present invention is characterized in that the submersible is recovered via the twine rope and the buoy cable by pulling up the recovery line.

[Effect]

In the above-described submersible rescue method of the present invention, two
The weir vessel tows a leash line below the rescue buoy via a hoisting line, and the leash line engages the rescue buoy or buoy line. Thereafter, by pulling up the hoisting line, the submersible is hoisted and recovered via the twine line and buoy line.

〔Example〕

Below, a submersible rescue method as an embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a schematic diagram for explaining the outline thereof, and Fig. 2 shows the state of engagement between the buoy cable and the entanglement cable. FIG.

As shown in FIG. 1, in order to salvage and rescue the submersible vessel 12 that has sunk on the seabed B, the method of this embodiment performs the rescue work in the following steps.

When the submarine 12 is in distress and has sunk on the seabed B, the rescue buoy 14 is floated from above via the rescue cable 13 as a buoy cable and placed at a required height (the length of the rescue cable 13). , the acoustic oscillator 15 notifies the mother ships 1 and 2 on the sea surface W of their position.

The mother ship 1 and the rescue ship 2 are the submersible ship 12.
In the vicinity where is located, hoisting and retrieving cables 3, 3 each having a chain-like weight 10 at the tip are suspended.

The lower ends of these lifting cables 3, 3 are connected to the tangle cable 11.
The leash rope 11 is provided with a plurality of weights 10, a plurality of floats 5 with acoustic oscillators, and a leash rope float 6 at regular intervals depending on the length of the leash rope. And, the above-mentioned entanglement rope 11 is
The weight 10 and the floats 5 and 6 are arranged so that the rescue buoy is located at a required height from the seabed B, that is, at a level lower than the height at which the rescue buoy 14 is located.

In this state, the mother ship 1 and the rescue ship 2,
The acoustic positioning devices 16a and 16b observe the acoustic signals from the acoustic oscillator-equipped float 5 and the acoustic oscillator 15 of the submersible vessel 12, and while grasping the positional relationship between the submersible vessel 12 and the entanglement line 11, the hoisting line 3 Then, the entanglement rope 11 is towed close to the rescue buoy 14.

Next, by towing the entanglement line 11 by the mother ship 1 and the rescue boat 2, the entanglement line 11 comes into contact with the rescue line 13 and the rescue buoy 14, and this state is detected by the acoustic positioning devices 16a and 16b. Once it has been measured and determined, the mother ship 1 and the rescue boat 2 are maneuvered so that both ends of the entanglement line 11 cross each other, and the entanglement line 11 is connected to the rescue line 13 and the rescue buoy 14 as shown in FIG. Entangle and engage.

Then, the submersible vessel 12 is raised above the sea surface W and retrieved by winding up the recovery line 3, the entanglement line 11, and the rescue line 13 in the mother ship 1 and the rescue vessel 2.

In addition, in FIG. 1, the reference numeral 8 indicates a floating cable.

In this way, according to the method of this embodiment, even if the submersible 12 to be rescued is on the deep ocean floor B,
The submarine 12 can be reliably lifted and retrieved.

Furthermore, regardless of the diving depth of the submersible 12, the rescue of the submersible 12 can be carried out using the rescue rope 13 of a certain length, so the rescue rope 13 can be shortened, and
The rescue buoy 14 can be downsized.

Therefore, the space occupied by the rescue buoy 14 inside the submersible 12 can be reduced, and the space occupied by the rescue buoy 14 can be reduced.
In addition to making effective use of the space inside and the payload, the miniaturization of the rescue buoy 14 also makes it possible to downsize the submersible itself, and in this case, the maneuverability of the submersible can be improved. can.

〔Effect of the invention〕

As described in detail above, according to the submersible rescue method of the present invention, below the rescue buoy that has been raised to a required height via the buoy cable from the submersible that has sunk on the ocean floor,
In order to engage the buoy or the buoy rope with the tangle rope, the tangle rope, which is installed to connect the lower ends of the weighted hoisting and retrieval cables each suspended from two ships at sea, is connected to the buoy or the buoy rope. The submersible is towed at a lower level than the above, thereby performing the above-mentioned engagement, and then the above-mentioned hoisting and retrieving line is pulled up and the above-mentioned submersible is recovered via the above-mentioned tangling line and buoy line. The following effects or advantages can be obtained.

(1) Long buoy cable (rescue cable) commensurate with the depth of the ocean floor
This eliminates the need for large rescue buoys, and it is possible to reliably retrieve and rescue a submarine sitting on the seabed in distress, regardless of the depth.

(2) As the rescue buoy becomes smaller, the space and payload of the submersible can be used more effectively, and it also becomes possible to downsize the submersible, and in this case, the maneuverability of the submersible can be improved.

(3) During salvage work for a submersible, by manipulating a two-way vessel at sea, the tangle rope can be wrapped around the buoy rope of a rescue buoy and tangled.
Since the submersible is connected to the ship, this work can be carried out easily and safely.

[Brief explanation of drawings]

Figures 1 and 2 show a submersible rescue method as an embodiment of the present invention. Figure 1 is a schematic diagram for explaining the outline, and Figure 2 is a diagram showing the relationship between the buoy rope and the entanglement rope. Figures 3 and 4 show conventional means for hoisting and retrieving a submersible; Figure 3 is a schematic diagram showing how the rescue buoy is detached from the submersible; FIG. 2 is a schematic diagram showing the state of recovery of the submersible. 1...mother ship, 2...rescue boat, 3...lifting line, 5
... Float with acoustic oscillator, 6 ... Float for twining rope, 8 ... Floating rope, 10 ... Chain weight, 11 ...
Entanglement cable, 12... Submersible, 13... Rescue rope as buoy cable, 14... Rescue buoy, 15... Acoustic oscillator, 16a, 16b... Acoustic positioning device, B...
Seabed, W...Sea surface.

Claims (1)

[Claims] 1. Below the rescue buoy, which has been raised to the required height from the submersible sunk on the seabed via the buoy cable, two offshore weirs are to be engaged with the buoy or with the buoy cable. After the above-mentioned tangling cables, which are provided to connect the lower ends of the weighted hoisting and retrieving cables each suspended from the ship, are towed at a level lower than the above-mentioned height, thereby performing the above-mentioned engagement,
A submersible ship rescue method characterized in that the submersible is recovered via the above-mentioned twine rope and buoy cable by pulling up the above-mentioned recovery line.