An auxiliary mechanism for deep sea buoy deployment and its working method

Abstract

The application discloses a kind of far sea buoy deployment auxiliary mechanism and its working method, belong to marine observation technical field, including main floater, adjusting floater, binding structure and spare floater;Adjusting floater is arranged in the upper portion of main floater, adjusting floater is equipped with water inlet and drain hole, and binding structure is wrapped in the outside of main floater and adjusting floater;The side of main floater along tow direction is equipped with circular arc portion towards ship body, and circular arc portion is equipped with connecting ring, and tow cable is connected between ship body and connecting ring, and the other side of main floater along tow direction is connected with circular arc portion by cable rope connection buoy, and spare floater is detachably connected on the cable rope between main floater and buoy;The outside of binding structure is wound anchor cable, and the anchor cable is extended and connected with anchor block along the lower end of main floater.The buoy is deployed by gradually reducing the buoyancy of auxiliary structure to make the anchor block sink smoothly into the seabed, eliminate the safety risk caused by release impact, and ensure the efficient and safe completion of deep sea buoy deployment task.

Description

Technical Field

[0001] This invention belongs to the field of marine observation technology, specifically relating to an auxiliary mechanism for deploying deep-sea buoys and its working method. Background Technology

[0002] Currently, the deployment of deep-sea buoys typically relies on large research vessels or ships with heavy lifting capabilities. After arriving at the target area, the ship's crane first lowers the main buoy into the water, then releases the mooring cables sequentially, and finally lifts and deploys the several-ton anchor block into the sea. However, this existing technology has several shortcomings: The deployment of deep-sea buoys often requires collaboration with overseas partners. However, the vessels provided by these partners cannot guarantee deployment capabilities, and the rental cost of large specialized vessels is prohibitively high. Furthermore, when deploying multiple buoys, large vessels need to make multiple trips to different deployment points, consuming a significant amount of operational time and severely hindering the deployment efficiency. If smaller vessels are used to carry out the operation, suspending several tons of anchor blocks on the outside of the ship's side will seriously affect the ship's balance, and the violent impact generated at the moment of release may even cause capsizing. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides an auxiliary mechanism for deploying deep-sea buoys and its operating method. It provides temporary buoyancy to the anchor block, allowing it to float on the sea surface and be towed to the target deployment point by a small vessel. During deployment, the buoyancy of the auxiliary structure is gradually reduced to allow the anchor block to sink smoothly to the seabed. This eliminates reliance on shipborne heavy lifting equipment and vessel tonnage, removes safety risks associated with release impacts, significantly reduces the performance requirements of the vessel during deployment, and ensures the safe completion of deep-sea buoy deployment missions.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides an auxiliary mechanism for deploying deep-sea buoys, comprising a main buoy, an adjustable buoy, a binding structure, and a spare buoy; The adjustable float is located on the upper part of the main float, and the adjustable float is provided with a water inlet and a water outlet. The binding structure is wrapped around the outside of the main float and the adjustable float. The main float has an arc-shaped part on one side of the hull along the towing direction. The arc-shaped part has a connecting ring. A towing cable is connected between the hull and the connecting ring. The other side of the main float opposite the arc-shaped part along the towing direction is connected to a buoy by a cable. A spare float is detachably connected to the cable between the main float and the buoy. The externally wound anchor cable of the binding structure is connected to an anchor block extending along the lower end of the main float.

[0005] As a further implementation, the main float is a solid structure made of a material that can be crushed under a set water depth pressure, the regulating float is a hollow sealed structure, the water inlet is located at the lower part of the regulating float, and the drain hole is located at the upper part of the regulating float.

[0006] As a further implementation, the spare float is connected to the main float and the buoy respectively by a detachable cable, and the spare float is a solid structure or a sealed hollow structure.

[0007] As a further implementation, the binding structure is made of woven cables, and the density of the binding structure is greater than that of seawater. The binding structure completely wraps around and binds the main float and the regulating float in place.

[0008] As a further implementation, the outer surface of the arc portion smoothly transitions with the outer contour of the main body of the main float, and the connecting ring is fixedly disposed at the geometric center position of the arc portion.

[0009] As a further implementation, an anchor chain fixing point is provided at the binding structure at the upper end of the adjustable float. The anchor chain fixing point is connected to the end of the anchor chain, and the other end of the anchor chain is wrapped around the main float and the adjustable float and then extends downward to connect with the anchor block.

[0010] As a further implementation, the anchor cable is circumferentially wound along the outer surface of the binding structure, and the lower end of the anchor cable converges at the bottom of the main float and connects to the anchor block. The anchor cable forms multiple surrounding fixing loops outside the binding structure.

[0011] As a further implementation, one end of the towing cable is connected to the connecting ring, the other end of the towing cable is connected to the hull, and the buoy is connected to the rear end of the spare buoy by a cable, wherein the length of the cable between the buoy and the spare buoy is greater than the length of the towing cable.

[0012] As a further implementation, the net buoyancy provided by the main float is greater than the weight of the anchor block in the water, and the total net buoyancy provided by the main float, the adjusting float, and the spare float is greater than the total weight of the anchor block and the anchor cable in the water.

[0013] Secondly, the present invention also provides a method for operating an auxiliary mechanism for deploying deep-sea buoys, comprising: The main float and the regulating float are tied together with a binding structure, and the spare float is connected to the main float and the buoy respectively with cables; The anchor cable is wrapped around the outside of the binding structure and the lower end of the anchor cable is connected to the anchor block. The towing cable is connected between the connecting ring of the main float arc and the hull. The auxiliary mechanism, which is connected to the anchor block and the buoy, is hoisted to the sea surface as a whole, so that the anchor block is suspended below the main float and the buoy floats on the sea surface behind the main float. The main buoy, regulating buoy, along with anchor blocks and buoys, are towed to the target deployment point by the hull using towing cables. After removing the spare float from the cable between the main float and the buoy, disconnect the cable between the hull and the main float. Open the drain and inlet holes of the regulating float, and seawater enters the regulating float and expels the air inside. The buoyancy of the regulating float gradually decreases, and the anchor block, together with the main float and the regulating float, slowly sinks to the seabed, while the buoy floats on the sea surface.

[0014] One or more technical solutions of the present invention have the following beneficial effects: By coordinating the main float, adjusting float, lashing structure, and backup float, the reliance on shipborne heavy-duty lifting equipment for deep-sea buoy deployment is fundamentally solved. The main float provides the primary buoyancy to keep the anchor block afloat, while the adjusting float gradually reduces buoyancy through its inlet and outlet holes, allowing the anchor block to sink smoothly and slowly to the seabed. This completely eliminates the violent impact of instantly releasing the anchor block when the cable is cut, as is common in traditional deployment methods, effectively preventing the risk of capsizing for small vessels due to sudden force changes. The lashing structure integrates the main float and adjusting float, providing reliable connection points for the towing cable and anchor chain. This allows the entire system to be towed to the target deployment point by small fishing boats or patrol vessels with basic towing capabilities, eliminating the need to charter large specialized research vessels and significantly reducing vessel selection costs and chartering difficulties. The backup float provides reserve buoyancy in case the adjusting float unexpectedly takes on water, ensuring system safety redundancy during towing.

[0015] Furthermore, the main buoy collapses under seawater pressure after sinking to the set depth along with the anchor block, losing buoyancy and ensuring the anchor block fully touches the bottom and gains reliable grip. The density of the lashing structure is greater than that of seawater, so it will not float up and interfere with the mooring after sinking to the bottom. The entire deployment process is completed on shore with the pre-integration of auxiliary mechanisms, anchor blocks, and buoys. At sea, it can be completed with only towing and simple operations, greatly simplifying the operation process, reducing the need for professional operators, and effectively avoiding the risk of delays in the operation window caused by outdated equipment and frequent crane failures of partner vessels.

[0016] In addition, the overall size of the auxiliary mechanism can be packed into a standard container for transportation, which facilitates rapid deployment to overseas deployment sites. It is especially suitable for deployment tasks in remote sea areas lacking large specialized vessels or in engineering scenarios where multiple buoys need to be deployed at multiple points. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a schematic diagram of the state during the deployment process of an auxiliary mechanism for deploying deep-sea buoys, as provided in Embodiment 1 of the present invention. Figure 2 This is a schematic diagram of the composition of an auxiliary mechanism for deploying deep-sea buoys provided in Embodiment 1 of the present invention.

[0019] In the diagram: 1. Main float; 2. Adjustable float; 3. Spare float; 4. Anchor block; 5. Anchor chain; 6. Binding structure; 7. Towing cable; 8. Connecting ring; 9. Water inlet; 10. Drain hole. Detailed Implementation

[0020] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is intended to include the plural form as well. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] Example 1 like Figure 1 As shown, the auxiliary mechanism mainly includes a main float 1, an adjusting float 2, a lashing structure 6, and a spare float 3. The main float 1 is the core component that provides the main buoyancy for the entire mechanism. The adjusting float 2 is located on top of the main float 1. The lashing structure 6 encloses the main float 1 and the adjusting float 2, making them a single unit. The spare float 3 is connected to one side of the lashing structure 6 by a cable and serves as a safety redundancy component.

[0023] The main float 1 is a solid structure with no internal cavities. This structural feature completely eliminates the risk of seawater seepage into the main float 1, ensuring stable buoyancy even under prolonged immersion. The main float 1 is made of a material that can be crushed under pressure at a set water depth. When the main float 1 sinks to a certain depth with the anchor block 4, the external seawater pressure exceeds the material's pressure resistance limit, causing the main float 1 to collapse, shrink in volume, and lose its buoyancy. This characteristic ensures that the anchor block 4 is not disturbed by the residual buoyancy of the main float 1 upon bottoming, allowing it to obtain sufficient bottoming force for reliable grip.

[0024] The regulating float 2 is located inside the binding structure 6 and above the main float 1. The regulating float 2 is a hollow, sealed structure with an internal enclosed space for air and seawater to enter and exit. The regulating float 2 has a water inlet 9 and a drain 10. The water inlet 9 is located at the lower part of the regulating float 2, and the drain 10 is located at the upper part. By controlling the opening and closing of the water inlet 9 and the drain 10, the seawater and air inside the regulating float 2 can be exchanged, thereby adjusting the buoyancy it provides.

[0025] The binding structure 6, made of woven cables, completely wraps around and secures the main buoy 1 and the regulating buoy 2. The density of the binding structure 6 is greater than that of seawater. During towing, the binding structure 6 tightly wraps around the main buoy 1 and the regulating buoy 2, firmly binding them together to prevent relative displacement or frictional collisions during rough seas. Furthermore, after the anchor block 4 sinks to the bottom, the binding structure 6 will not float up and interfere with the mooring cables, ensuring the long-term reliability of the buoy's anchoring.

[0026] The backup float 3 is a solid or sealed hollow structure, and the net buoyancy it provides is greater than the weight of the regulating float 2 in the water after leakage. In the event of accidental leakage of the regulating float 2, the backup float 3 can provide sufficient backup buoyancy to prevent the anchor block 4 from sinking to the seabed, thus buying time for operators to repair or handle the situation. During normal deployment, the backup float 3 is first released before operating the regulating float 2, without affecting subsequent buoyancy adjustment operations.

[0027] The main float 1 has an arc-shaped portion on one side facing the hull along the towing direction, and the outer surface of the arc-shaped portion smoothly transitions with the outer contour of the main float 1. A connecting ring 8 is provided on the arc-shaped portion, and the connecting ring 8 is fixedly positioned at the geometric center of the arc-shaped portion. One end of the towing cable 7 is connected to the connecting ring 8, and the other end of the towing cable 7 is connected to the hull. The hull applies towing force to the auxiliary mechanism through the towing cable 7. The arc-shaped portion allows the towing force to be smoothly transmitted along the longitudinal axis of the main float 1, improving the towing attitude of the auxiliary mechanism in the water.

[0028] The main buoy 1 is connected to the backup buoy 3 via a cable on the opposite side of the arc section along the towing direction. The other end of the backup buoy 3 is connected to a buoy via a cable. The length of the cable between the buoy and the backup buoy 3 is greater than the length of the towing cable 7. During towing, due to the longer buoy connection cable, the buoy is always positioned behind the auxiliary mechanism, preventing it from running parallel to or ahead of the auxiliary mechanism. This length difference effectively avoids the risk of the buoy colliding with the auxiliary mechanism or being caught in the stern propeller area when turning, decelerating, or rolling in waves.

[0029] Anchor cables are wound around the outside of the lashing structure 6, extending along the lower end of the main float 1 and connecting to anchor blocks 4. The anchor cables are wound circumferentially along the outer surface of the lashing structure 6, with their lower ends converging at the bottom of the main float 1 and connecting to the anchor blocks 4, forming multiple circumferential fixing loops on the outside of the lashing structure 6. The anchor blocks 4 are suspended below the auxiliary mechanism by the anchor cables, and when the auxiliary mechanism floats on the sea surface, the anchor blocks 4 are suspended in the water.

[0030] One end of the anchor chain 5 is connected to the anchor block 4, and the other end is connected to the upper end of the adjusting float 2. The anchor chain 5 can also resist the impact and friction interference that the debris may cause to the anchor system during the sinking process of the auxiliary mechanism.

[0031] The net buoyancy provided by the main float 1 is greater than the weight of the anchor block 4 in the water. The total net buoyancy provided by the main float 1, the adjusting float 2, and the spare float 3 is greater than the total weight of the anchor block 4 and the anchor cable in the water. This buoyancy configuration ensures that the auxiliary mechanism has sufficient reserve buoyancy during towing, which can reliably suspend the anchor block 4 below the sea surface.

[0032] The auxiliary mechanism operates as follows: Lay out the lashing structure 6, and place the main float 1 and the adjusting float 2 inside the lashing structure 6 in sequence, then lock the lashing structure 6. The main float 1 is placed at the bottom, and the adjusting float 2 is placed above the main float 1, forming a stacked arrangement inside the lashing structure 6. Connect the anchor block 4 to the connection point at the lower end of the lashing structure 6 using anchor cables, and connect one end of the towing cable 7 to the towing connection point at the upper end of the lashing structure 6. Connect the spare float 3 to the main float 1 and the buoy using cables.

[0033] The auxiliary mechanism, connected to anchor block 4, is lowered into the sea as a whole. Anchor block 4 is suspended below the auxiliary mechanism and floats on the sea surface. A buoy is then lowered into the sea and connected to the rear end of the auxiliary structure via a cable. The auxiliary mechanism, along with anchor block 4 and buoy, is towed to the target deployment point by the vessel using towing cable 7. During towing, personnel monitor the status of towing cable 7, the auxiliary mechanism, and the buoy in real time, adjusting the vessel speed appropriately based on sea conditions and the swaying of the auxiliary mechanism to ensure safe towing.

[0034] Upon reaching the deployment point, pull the tow cable 7 to bring the auxiliary mechanism close to the hull. The operator releases the tow cable 7 between the anchor block 4 and the buoy, and temporarily secures the anchor block 4 and the buoy to both sides of the hull. Connect one end of the mooring line to the buoy, slowly lower the buoy out of the hull, and release the mooring line. The hull is towed slowly forward, gradually releasing the mooring line into the sea. Before the mooring line is fully released, connect the end of the mooring line to the anchor chain 5 on the anchor block 4.

[0035] After all mooring lines have been released, the ship stops and the temporary lashing of anchor block 4 is released. The cable connection between the spare float 3 and the lashing structure 6 is released. The drain hole 10 and water inlet hole 9 of regulating float 2 are opened, allowing seawater to enter and expel air from the regulating float 2. As seawater gradually fills the internal space of regulating float 2, its buoyancy gradually decreases. When the buoyancy of regulating float 2 decreases to the point where it can no longer provide sufficient support, anchor block 4, along with the auxiliary mechanism, slowly sinks to the seabed.

[0036] As the main float 1 sinks with the anchor block 4, the external seawater pressure gradually increases with depth. When the pressure reaches the pressure resistance limit of the main float 1 material, the structure of the main float 1 collapses, its volume shrinks, and the buoyancy it provides is lost. This process ensures that the anchor block 4 is not affected by residual buoyancy when it touches the bottom, and the anchor block 4 can sit on the bottom with sufficient force and achieve reliable grip. The regulating float 2 will also experience structural failure under deep water pressure; after its sealed space is destroyed, it will no longer have the ability to provide buoyancy.

[0037] The backup float 3 is first released during the normal deployment process and does not participate in the sinking process. In the event of an unexpected leak in the regulating float 2, the backup float 3 can provide backup buoyancy to keep the anchor block 4 suspended, giving operators a time window to repair or replace the regulating float 2. Once the regulating float 2 is functional again, the backup float 3 is released and the deployment operation continues.

[0038] The auxiliary facility is designed to fit into a standard 6-meter shipping container, facilitating transport to the target country via sea and road. This size allows the facility to utilize standard container shipping systems and road transport networks for fast, low-cost long-distance logistics.

[0039] This auxiliary mechanism, through a three-stage buoyancy configuration of main float 1, regulating float 2, and backup float 3, enables the safe towing and controlled release of anchor block 4 from the shore to the deployment point. Main float 1 provides the primary buoyancy to keep anchor block 4 afloat on the sea surface, regulating float 2 achieves gradual adjustment of buoyancy through water intake and venting, and backup float 3 provides backup buoyancy when regulating float 2 fails. The coordinated operation of these three components eliminates the need for heavy equipment such as shipboard cranes and winches during the entire deployment process, significantly reducing the requirements for the tonnage and equipment of the deployment vessel.

[0040] The binding structure 6 of this auxiliary mechanism is made of a material with a density greater than seawater. During towing, it utilizes negative buoyancy to achieve self-locking and wrapping, preventing the anchor block 4 from floating up and interfering with the anchoring system after it sinks to the bottom. The main float 1 is made of a material that can be crushed under the pressure of a set water depth. During sinking, it gradually loses buoyancy as the pressure increases, ensuring that the anchor block 4 fully touches the bottom. The adjusting float 2 achieves a controllable reduction of buoyancy through the coordinated operation of the inlet hole 9 and the outlet hole 10, allowing the anchor block 4 to sink smoothly and slowly to the seabed, eliminating the violent impact and ship capsizing risk caused by instantaneous release in traditional deployment methods.

[0041] The use of this auxiliary mechanism transforms complex offshore hoisting and assembly operations into pre-integration on land followed by sequential release at sea, significantly simplifying the entire deployment process. Operators no longer need to hoist heavy components on the swaying deck of a ship; they only need to assemble and connect the auxiliary mechanism, anchor block 4, and buoys on shore, and then complete the deployment on the sea surface via towing and valve operation. This not only reduces the need for specialized operators but also lowers the uncertainties and high time costs associated with international collaboration, personnel scheduling, and equipment operation.

[0042] This auxiliary mechanism is particularly suitable for scenarios involving the deployment of deep-sea buoys in cooperation with countries whose vessels generally have poor conditions. These countries often experience frequent malfunctions of shipboard cranes, winches, and other equipment, and have limited shipbuilding and repair capabilities. This auxiliary mechanism allows deployment operations to be carried out using small fishing boats, patrol boats, and other vessels with basic towing capabilities, completely eliminating reliance on the heavy lifting equipment of the partner's vessels and effectively solving the core problem of delays in the operational window caused by equipment maintenance.

[0043] At marine engineering construction sites supported by large mother ships, the mother ship can transport auxiliary equipment along with buoy systems to the vicinity of the work area. The auxiliary equipment and buoy systems are then lowered into the water using hoisting equipment, and subsequently, a workboat tows the auxiliary equipment to a designated deployment point on the periphery to complete the deployment independently. During this time, the mother ship can continue to perform other operations in the core area of ​​the project. This is particularly beneficial when multiple buoys need to be deployed on the periphery, significantly improving overall operational efficiency and saving the mother ship valuable operating time.

[0044] The auxiliary mechanism's main float 1 employs a solid structure to avoid the risk of leakage, while the adjusting float 2 uses a hollow, sealed structure to achieve controllable buoyancy adjustment. The backup float 3 provides safety redundancy. These three float structures, with their different forms and complementary functions, together constitute a complete temporary buoyancy supply system. The binding structure 6 organically integrates the three components, while also providing reliable connection points for the anchor block 4, towing cable 7, and anchor chain 5. The entire system is compact, functionally complete, and easy to operate.

[0045] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. An auxiliary mechanism for deploying deep-sea buoys, characterized in that, Includes main float, regulating float, lashing structure and spare float; The adjustable float is located on the upper part of the main float, and the adjustable float is provided with a water inlet and a water outlet. The binding structure is wrapped around the outside of the main float and the adjustable float. The main float has an arc-shaped part on one side of the hull along the towing direction. The arc-shaped part has a connecting ring. A towing cable is connected between the hull and the connecting ring. The other side of the main float opposite the arc-shaped part along the towing direction is connected to a buoy by a cable. A spare float is detachably connected to the cable between the main float and the buoy. The externally wound anchor cable of the binding structure extends along the lower end of the main float and is connected to an anchor block.

2. The auxiliary mechanism for deploying deep-sea buoys as described in claim 1, characterized in that, The main float is a solid structure made of a material that can be crushed under a set water depth pressure. The regulating float is a hollow sealed structure. The water inlet is located at the lower part of the regulating float, and the drain hole is located at the upper part of the regulating float.

3. The auxiliary mechanism for deploying deep-sea buoys as described in claim 1, characterized in that, The spare float is connected to the main float and the buoy via a detachable cable. The spare float is either a solid structure or a sealed hollow structure.

4. The auxiliary mechanism for deploying deep-sea buoys as described in claim 1, characterized in that, The binding structure is made of woven cables, and the density of the binding structure is greater than that of seawater. The binding structure completely wraps around and binds the main float and the regulating float in place.

5. The auxiliary mechanism for deploying deep-sea buoys as described in claim 1, characterized in that, The outer surface of the arc portion smoothly transitions with the outer contour of the main body of the main float, and the connecting ring is fixedly set at the geometric center of the arc portion.

6. The auxiliary mechanism for deploying deep-sea buoys as described in claim 1, characterized in that, An anchor chain fixing point is provided at the binding structure at the upper end of the adjustable float. The anchor chain fixing point is connected to the end of the anchor chain. The other end of the anchor chain is wrapped around the main float and the adjustable float and then extends downward to connect with the anchor block.

7. The auxiliary mechanism for deploying deep-sea buoys as described in claim 1, characterized in that, The anchor cable is circumferentially wound along the outer surface of the binding structure. The lower end of the anchor cable converges at the bottom of the main float and connects to the anchor block. The anchor cable forms multiple rings around the outside of the binding structure.

8. The auxiliary mechanism for deploying deep-sea buoys as described in claim 1, characterized in that, One end of the towing cable is connected to the connecting ring, and the other end of the towing cable is connected to the hull. The buoy is connected to the rear end of the spare buoy by a cable, and the length of the cable between the buoy and the spare buoy is greater than the length of the towing cable.

9. The auxiliary mechanism for deploying deep-sea buoys as described in claim 1, characterized in that, The net buoyancy provided by the main float is greater than the weight of the anchor block in the water, and the total net buoyancy provided by the main float, the adjusting float, and the spare float is greater than the total weight of the anchor block and the anchor cable in the water.

10. The working method of the auxiliary mechanism for deploying deep-sea buoys as described in any one of claims 1-9, characterized in that, include: The main float and the regulating float are tied together with a binding structure, and the spare float is connected to the main float and the buoy respectively with cables; The anchor cable is wrapped around the outside of the binding structure and the lower end of the anchor cable is connected to the anchor block. The towing cable is connected between the connecting ring of the main float arc and the hull. The auxiliary mechanism, which is connected to the anchor block and the buoy, is hoisted to the sea surface as a whole, so that the anchor block is suspended below the main float and the buoy floats on the sea surface behind the main float. The main buoy, regulating buoy, along with anchor blocks and buoys, are towed to the target deployment point by the hull using towing cables. After removing the spare float from the cable between the main float and the buoy, disconnect the cable between the hull and the main float. Open the drain and inlet holes of the regulating float, and seawater enters the regulating float and expels the air inside. The buoyancy of the regulating float gradually decreases, and the anchor block, together with the main float and the regulating float, slowly sinks to the seabed, while the buoy floats on the sea surface.

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