A system for hoisting an emergency towline chain from a cabin

CN224797152UActive Publication Date: 2026-09-25NANTONG COSCO KHI SHIP ENG
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Patent Information

Application Number
CN202522387300.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-11
Publication Date
2026-09-25
Estimated Expiration
2035-11-11

AI Technical Summary

Technical Problem

[0002]现有船舶应急拖带链条通常存放于甲板上,尽管可以优化通道空间并设置防护措施,但是较大的存放体积在暴露甲板上,仍可能干扰船员带缆作业和人员通行;而且船舶应急拖带链条通常是露天存放的,恶劣的海洋环境也会对应急拖带链条造成腐蚀

Benefits of technology

(1)本实用新型将应急拖带链条收纳于舱室内,仅在使用时通过绞车副卷筒、引绳以及舱口围保护装置的配合将应急拖带链条拖出舱室,从而显著提升甲板空间利用率,减少船员通行时因应急拖带链条裸露而发生磕绊的风险;

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a system of emergency towed chain can be hoisted from cabin, including storage wooden frame, hatch coaming protection device, guide rope, change direction subassembly and winch auxiliary drum, the cabin below the ship deck is equipped with storage wooden frame relative to hatch coaming position, and emergency towed chain is stored in storage wooden frame and is arranged neatly, is equipped with hatch coaming protection device on the corresponding hatch coaming of the side away from storage wooden frame, and is equipped with winch auxiliary drum on the side away from hatch coaming on deck, winch auxiliary drum is arranged with hatch coaming protection device on the same side, and is equipped with change direction subassembly between hatch coaming protection device and winch auxiliary drum on deck, the one end of guide rope is connected with the one end of emergency towed chain, and its other end passes through hatch coaming protection device upwards, and after change direction subassembly changes direction, is bound on winch auxiliary drum, and then through winding guide rope, emergency towed chain is hoisted out of cabin through hatch coaming protection device. The utility model improves deck space utilization rate.
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Description

Technical Field

[0001] This utility model relates to the field of ship design technology, specifically to a system for hoisting emergency towing chains from a cabin. Background Technology

[0002] Currently, emergency towing chains on ships are typically stored on deck. While this optimizes passageway space and provides protective measures, the large volume of these chains stored on exposed decks can still interfere with crew mooring operations and personnel movement. Furthermore, the harsh marine environment exposes these chains to corrosion due to their typically open storage. Therefore, given the extremely low frequency of use of emergency towing chains, finding a way to store them indoors while ensuring efficient and safe emergency operations has become a pressing problem that needs to be solved. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a system for hoisting emergency towing chains from the cabin. The emergency towing chain is stored in the cabin and only needs to be pulled out of the cabin when in use by the cooperation of the winch auxiliary drum, the guide rope and the hatch coaming protection device. This significantly improves the utilization rate of deck space and reduces the risk of crew members tripping due to the exposed emergency towing chain when passing through.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a system for hoisting emergency towing chains from a cabin, the innovation of which lies in: including a storage wooden frame, a hatch coaming protection device, a guide rope, a reversing assembly, and a winch auxiliary drum; a storage wooden frame is provided in a cabin below the ship's deck at a position relative to the hatch coaming, and the emergency towing chains are neatly arranged and stored in the storage wooden frame; a hatch coaming protection device is also provided on the corresponding hatch coaming on the side away from the storage wooden frame, and on the deck... A winch auxiliary drum is also provided on the side away from the hatch coaming; the winch auxiliary drum and the hatch coaming protection device are located on the same side, and a reversing assembly is also provided on the deck between the hatch coaming protection device and the winch auxiliary drum; one end of the guide rope is connected to one end of the emergency towing chain, and the other end passes upward through the hatch coaming protection device, and after being reversed by the reversing assembly, it is wound around the winch auxiliary drum, and then the power of the winch auxiliary drum is used to wind up the guide rope to lift the emergency towing chain out of the compartment through the hatch coaming protection device.

[0005] Preferably, the storage wooden frame is located in the corresponding compartment at the position relative to the hatch coaming, and is located on the lower side of the compartment relative to the hatch coaming, thereby facilitating the guide rope to pull the emergency towing chain tilted upward out of the compartment.

[0006] Preferably, the winch auxiliary drum is arranged horizontally and in a straight line with the hatch coaming, and the guide rope is wound 4 to 6 times on the winch auxiliary drum, thereby using the power of the winch auxiliary drum to lift the emergency towing chain to the deck via the guide rope.

[0007] Preferably, the reversing assembly includes a bollard and a deck roller; on the deck, bollards and deck rollers are also arranged at intervals on one side relative to the axial direction of the winch auxiliary drum. The bollards and deck rollers are arranged on the same side in a horizontal V-shape, and the bollards are arranged near the hatch coaming. Then, through the reversing cooperation of the bollards and deck rollers, the guide rope is guided by the hatch coaming protection device and then its direction is changed, and it is wound around the winch auxiliary drum.

[0008] Preferably, the bollard is positioned at the apex of the V-shape, and its position must ensure that its contact point with the emergency towing chain is aligned with the trajectory of the emergency towing chain as it is pulled upwards from the cabin. This facilitates pulling the emergency towing chain out of the cabin and changing direction once via the bollard.

[0009] Preferably, the deck roller is located near the winch auxiliary drum and is aligned with the winch auxiliary drum, thereby enabling secondary direction change via the deck roller.

[0010] Preferably, the hatch coaming protection device includes a guide plate, a first support column, a base, a second support column, and a connecting column; on the outer side of the corresponding hatch coaming away from the storage timber frame, vertically and laterally arranged bases are also symmetrically arranged longitudinally, and each base is supported at a corresponding position on the deck; a horizontally and longitudinally arranged connecting column is also arranged between two bases on the side away from the corresponding hatch coaming, and the two bases are fixedly connected together by the connecting column; the side of each base near the hatch coaming is a vertical side parallel to the hatch coaming, and an inclined surface inclined upwards towards the direction away from the hatch coaming is also opened at the upper end of the vertical side; on the vertical side of each base near the corresponding hatch coaming, horizontally and laterally arranged second support columns are also arranged vertically and horizontally at intervals, and the end of each second support column away from the corresponding base abuts against the outer surface of the corresponding hatch coaming; on the outer side of the corresponding hatch coaming away from the storage timber frame, vertically and longitudinally arranged bases are also symmetrically arranged longitudinally, and each base is supported at a corresponding position on the deck; on the outer side of the corresponding hatch coaming away from the storage timber frame, vertically and longitudinally arranged bases are also symmetrically arranged longitudinally, and each base is supported at a corresponding position on the deck; on the outer side of the corresponding hatch coaming away from the storage timber frame, vertically and longitudinally arranged bases are also symmetrically arranged longitudinally, and the two bases are fixedly connected together by the connecting column; on the outer side of each base, vertically and longitudinally arranged bases are also symmetrically arranged longitudinally, and ... Inside the hatch coaming, guide plates are vertically and horizontally positioned relative to each base. The upper end of each guide plate extends in an arc shape towards the corresponding base and is bolted to the inclined surface of the corresponding base, ensuring that its inner arc surface abuts against the upper end of the corresponding hatch coaming. On the side of each guide plate near the corresponding hatch coaming, first support columns are horizontally spaced vertically. The end of each first support column away from the corresponding guide plate abuts against the inner surface of the corresponding hatch coaming. The abutting cooperation of the first and second support columns positions the hatch coaming protection device. The distance between the two guide plates is consistent with the distance between the two bases, forming a guide groove that matches the emergency towing chain. The guide groove guides the emergency towing chain and ensures that the emergency towing chain will not damage the hatch coaming when it is pulled out of the compartment.

[0011] Preferably, it further includes a first rubber pad and a second rubber pad; a matching first rubber pad is also vertically attached and fixed to the end face of each first support column away from the corresponding guide plate, and each first support column abuts against the inner side of the corresponding hatch coaming through the first rubber pad, and the first rubber pad increases friction and provides protection; a matching second rubber pad is also vertically attached and fixed to the end face of each second support column away from the corresponding base, and each second support column abuts against the outer side of the corresponding hatch coaming through the second rubber pad, and the second rubber pad increases friction and provides protection.

[0012] Preferably, a light-reducing hole is vertically embedded through the middle position of each of the bases, and the light-reducing hole is configured to not interfere with the connecting column and the second support column, and does not interfere with the screwing action of the guide plate and the base. In this way, the weight of the hatch coaming protection device is reduced by the light-reducing hole, so as to ensure that the hatch coaming protection device is easy to transport and assemble.

[0013] Preferably, a matching hatch cover is also provided horizontally on the upper surface of the hatch coaming, and after the hatch coaming protection device is removed, the emergency towing chain stored in the cabin is protected by installing the hatch cover.

[0014] The beneficial effects of this utility model are: (1) This utility model stores the emergency towing chain in the cabin. Only when in use can the emergency towing chain be pulled out of the cabin by the cooperation of the winch auxiliary drum, the guide rope and the hatch coaming protection device, thereby significantly improving the utilization rate of deck space and reducing the risk of crew members tripping due to the exposed emergency towing chain when passing through. (2) The hatch coaming protection device of this utility model adopts a split design, which is not only easy to transport and flexibly assembled, but also ensures that the trajectory of the emergency towing chain is controllable during the hoisting process through the directional constraint of the guide groove, while also ensuring that the hatch coaming structure is not damaged. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of a system for hoisting emergency towing chains from a cabin according to the present invention.

[0017] Figure 2 for Figure 1 Top view.

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of the hatch coaming protection device.

[0019] Figure 4 for Figure 3 Side view.

[0020] Figure 5 for Figure 3 A schematic diagram of the structure of the middle guide plate.

[0021] Figure 6 for Figure 3 A schematic diagram of the structure of the base section.

[0022] Among them, 1-Emergency towing chain; 2-Hatch coaming; 3-Hatch coaming protection device; 4-Guide rope; 5-Bollard; 6-Deck roller; 7-Wind auxiliary drum; 8-Storage wooden frame; 9-Hatch cover; 31-Guide plate; 32-First support column; 33-Bolt; 34-Base; 35-Connecting column; 36-Second support column; 37-First rubber pad; 38-Relief hole; 39-Second rubber pad. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below through specific embodiments.

[0024] This utility model discloses a system for hoisting emergency towing chains from a compartment, comprising a storage wooden frame 8, a hatch coaming protection device 3, a guide rope 4, a reversing assembly, and a winch auxiliary drum 7; the specific structure is as follows: Figures 1-6 As shown, a storage wooden frame 8 is provided in the cabin below the ship's deck at a position relative to the hatch coaming 2, and the emergency towing chain 1 is neatly arranged and stored in the storage wooden frame 8; a hatch coaming protection device 3 is also provided on the corresponding hatch coaming 2 on the side away from the storage wooden frame 8, and a winch auxiliary drum 7 is also provided on the deck on the side away from the hatch coaming 2; the winch auxiliary drum 7 and the hatch coaming protection device 3 are located on the same side, and a reversing assembly is also provided on the deck between the hatch coaming protection device 3 and the winch auxiliary drum 7; one end of the guide rope 4 is connected to one end of the emergency towing chain 1, and the other end passes upward through the hatch coaming protection device 3, and after being reversed by the reversing assembly, it is wound around the winch auxiliary drum 7, and then the winch auxiliary drum 7 is used to power the winding of the guide rope 4 to hoist the emergency towing chain 1 out of the cabin through the hatch coaming protection device 3. The winch auxiliary drum 7 is horizontally aligned with the hatch coaming 2, and the guide rope 4 is wound around the winch auxiliary drum 7 4 to 6 times. The power of the winch auxiliary drum 7 is used to lift the emergency towing chain 1 to the deck through the guide rope 4.

[0025] like Figure 1 As shown, the storage wooden frame 8 is set in the corresponding compartment at the position relative to the hatch coaming 2, and it is set on the lower side of the compartment relative to the hatch coaming 2, so as to facilitate the guide rope 4 to pull the emergency towing chain 1 out of the compartment at an angle upward.

[0026] This utility model's reversing assembly includes a bollard 5 and a deck roller 6; as shown in the following example... Figure 1 , Figure 2 As shown, on the deck, relative to the axial side of the winch auxiliary drum 7, there are also bollards 5 and deck rollers 6 arranged in sequence at intervals. The bollards 5 and deck rollers 6 are arranged on the same side in a horizontal V-shape, and the bollards 5 are set near the hatch coaming 2. Then, through the change of direction of the bollards 5 and deck rollers 6, the guide rope 4 is guided by the hatch coaming protection device 3 and then the direction is changed, and it is wound on the winch auxiliary drum 7.

[0027] The bollard 5 is positioned at the apex of the V-shape, and its position must ensure that its contact point with the emergency towing chain 1 is aligned with the trajectory of the emergency towing chain 1 as it is pulled upwards from the cabin. This facilitates the pulling of the emergency towing chain 1 out of the cabin and its reversal via the bollard 5.

[0028] The deck roller 6 is located near the winch auxiliary drum 7 and is aligned with the winch auxiliary drum 7, thus enabling secondary direction change via the deck roller 6.

[0029] The hatch coaming protection device 3 of this utility model includes a guide plate 31, a first support column 32, a base 34, a second support column 36, a connecting column 35, a first rubber pad 37, and a second rubber pad 39; as shown Figures 1-6 As shown, on the outer side of the corresponding hatch coaming 2 away from the storage wooden frame 8, there are also vertically and horizontally arranged bases 34 symmetrically arranged along the longitudinal direction, and each base 34 is supported on the corresponding position on the deck; between the two bases 34, on the side away from the corresponding hatch coaming 2, there are also horizontally and longitudinally arranged connecting columns 35, and the two bases 34 are fixedly connected together by the connecting columns 35; the side of each base 34 near the hatch coaming 2 is a vertical side arranged parallel to the hatch coaming 2, and the upper end of its vertical side is also provided with an inclined surface that is inclined upward in the direction away from the hatch coaming 2; on the vertical side of each base 34 near the corresponding hatch coaming 2, there are also horizontally and horizontally arranged second support columns 36 at intervals, and the end of each second support column 36 away from the corresponding base 34 abuts against the outer surface of the corresponding hatch coaming 2. like Figures 1-6 As shown, on the inner side of the corresponding hatch coaming 2 on the side away from the storage wooden frame 8, and relative to each base 34, guide plates 31 are provided vertically and horizontally. The upper end of each guide plate 31 extends in an arc shape towards the corresponding base 34, and is fixed to the inclined surface of the corresponding base 34 by bolts 33, ensuring that its inner arc surface abuts against the upper end of the corresponding hatch coaming 2. On the side of each guide plate 31 near the corresponding hatch coaming 2, first support columns 32 are provided horizontally at intervals, and the end of each first support column 32 away from the corresponding guide plate 31 abuts against the inner surface of the corresponding hatch coaming 2. Thus, the hatch coaming protection device 3 is positioned by the abutting cooperation of the first support column 32 and the second support column 36. The distance between the two guide plates 31 is consistent with the distance between the two bases 34, forming a guide groove that matches the emergency towing chain 1, thereby guiding the emergency towing chain 1 with the guide groove and ensuring that the emergency towing chain 1 will not damage the hatch coaming 2 when it is pulled out of the compartment.

[0030] like Figures 1-6As shown, a matching first rubber pad 37 is vertically and fixedly attached to the end face of each first support column 32 away from the corresponding guide plate 31, and each first support column 32 abuts against the inner side of the corresponding hatch coaming 2 through the first rubber pad 37, thereby increasing friction and providing protection; a matching second rubber pad 39 is vertically and fixedly attached to the end face of each second support column 36 away from the corresponding base 34, and each second support column 36 abuts against the outer side of the corresponding hatch coaming 2 through the second rubber pad 39, thereby increasing friction and providing protection.

[0031] like Figures 1-6 As shown, a lightening hole 38 is vertically embedded and penetrated at the middle position of each base 34. The lightening hole 38 is set without interfering with the connecting column 35 and the second support column 36, and does not interfere with the screwing action of the guide plate 31 and the base 34. Thus, the weight of the hatch coaming protection device 3 is reduced by the lightening hole 38 to ensure that the hatch coaming protection device 3 is easy to transport and assemble.

[0032] like Figure 1 , Figure 2 As shown, a hatch cover 9 is horizontally provided on the upper surface of the hatch coaming 2, and after the hatch coaming protection device 3 is removed, the emergency towing chain 1 stored in the cabin is protected by installing the hatch cover 9.

[0033] In addition to being fixed to the winch auxiliary drum 7, the other end of the guide rope 4 of this utility model can also be connected to a tugboat and powered by the winch on the tugboat to pull the emergency towing chain 1 out of the cabin in a similar manner.

[0034] The working principle of this utility model includes the following steps: (1) First, take out the guide rope 4 and each component of the hatch coaming protection device 3 respectively; (2) Open the hatch cover 9 and place the base 34 on the outside of the hatch coaming 2 near the winch auxiliary drum 7, so that it is supported on the deck at the corresponding position, and ensure that the second support column 36 is in close contact with the outer side of the corresponding hatch coaming 2 through the second rubber pad 39; then fix the guide plate 31 to the base 34 by bolts 33, and ensure that the first support column 32 is in close contact with the inner side of the corresponding hatch coaming 2 through the first rubber pad 37; thus completing the assembly and fixing of the hatch coaming protection device 3; (3) Throw the guide rope 4 into the cabin from the hoisting port and connect the guide rope 4 to one end of the emergency towing chain 1; (4) Then the guide rope 4 is placed in the guide groove, and after the change of direction of the bollard 5 and the deck roller 6, it is wound around the winch auxiliary drum 7 and wound several times. (5) The auxiliary drum 7 of the winch is used to wind up the guide rope 4. At this time, the emergency towing chain 1 is hoisted out of the cabin through the hatch coaming protection device 3 and exposed on the deck. (6) Then, the emergency towing chain 1 is pulled out of the guide cable hole by the guide rope on the tugboat, and the ship can be towed in an emergency.

[0035] The beneficial effects of this utility model are: (1) The present invention stores the emergency towing chain 1 in the cabin. Only when in use, the emergency towing chain 1 is pulled out of the cabin by the cooperation of the winch auxiliary drum 7, the guide rope 4 and the hatch coaming protection device 3, thereby significantly improving the utilization rate of deck space and reducing the risk of crew members tripping due to the exposed emergency towing chain 1 when passing through. (2) The hatch coaming protection device 3 of this utility model adopts a split design, which is not only easy to transport and flexibly assembled, but also ensures that the trajectory of the emergency towing chain 1 is controllable during the hoisting process through the directional constraint of the guide groove, while also ensuring that the structure of the hatch coaming 2 is not damaged.

[0036] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, all modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model. The technical content for which protection is sought in the present utility model has been fully recorded in the technical requirements.

Claims

1. A system for hoisting emergency towing chains from a compartment, characterized in that: The system includes a storage wooden frame, a hatch coaming protection device, a guide rope, a reversing assembly, and a winch auxiliary drum. A storage wooden frame is located in a compartment below the ship's deck, relative to the hatch coaming, and an emergency towing chain is neatly arranged and stored within the storage wooden frame. A hatch coaming protection device is also installed on the corresponding hatch coaming on the side away from the storage wooden frame, and a winch auxiliary drum is also located on the deck on the side away from the hatch coaming. The winch auxiliary drum and the hatch coaming protection device are located on the same side, and a reversing assembly is located on the deck between the hatch coaming protection device and the winch auxiliary drum. One end of the guide rope is connected to one end of the emergency towing chain, and the other end passes upward through the hatch coaming protection device, is reversed by the reversing assembly, and then wound around the winch auxiliary drum. The winch auxiliary drum then uses its power to wind up the guide rope, hoisting the emergency towing chain out of the compartment via the hatch coaming protection device.

2. The system for hoisting emergency towing chains from a compartment according to claim 1, characterized in that: The storage wooden frame is set in the corresponding compartment at the position relative to the hatch coaming, and is located on the lower side of the compartment relative to the hatch coaming, so as to facilitate the guide rope to pull the emergency towing chain tilted upward out of the compartment.

3. The system for hoisting emergency towing chains from a compartment according to claim 1, characterized in that: The winch auxiliary drum is horizontally aligned with the hatch coaming, and the guide rope is wound 4 to 6 times on the winch auxiliary drum. The power of the winch auxiliary drum is then used to lift the emergency towing chain onto the deck via the guide rope.

4. A system for hoisting emergency towing chains from a compartment according to claim 3, characterized in that: The reversing assembly includes bollards and deck rollers; bollards and deck rollers are also arranged sequentially at intervals on the deck relative to the axial side of the winch auxiliary drum. The bollards and deck rollers are arranged on the same side in a horizontal V-shape, and the bollards are arranged near the hatch coaming. Through the reversing cooperation of the bollards and deck rollers, the guide rope is guided by the hatch coaming protection device and then its direction is changed, and it is wound around the winch auxiliary drum.

5. A system for hoisting emergency towing chains from a compartment according to claim 4, characterized in that: The bollard is positioned at the apex of a V-shape, and its placement must ensure that its contact point with the emergency towing chain is aligned with the trajectory of the emergency towing chain as it is pulled upwards from the cabin. This facilitates pulling the emergency towing chain out of the cabin and changing direction once via the bollard.

6. A system for hoisting emergency towing chains from a compartment according to claim 5, characterized in that: The deck roller is positioned near the winch auxiliary drum and is aligned with the winch auxiliary drum, thus enabling secondary direction changes via the deck roller.

7. A system for hoisting emergency towing chains from a compartment according to claim 1, characterized in that: The hatch coaming protection device includes a guide plate, a first support column, a base, a second support column, and a connecting column. On the outer side of the corresponding hatch coaming away from the storage timber frame, vertically and laterally arranged bases are symmetrically spaced longitudinally, with each base supported at a corresponding position on the deck. A horizontally longitudinal connecting column is also provided between two bases on the side away from the corresponding hatch coaming, and the two bases are fixedly connected together by the connecting column. Each base has a vertical side parallel to the hatch coaming on its side, and its upper end has an inclined surface that slopes upwards away from the hatch coaming. On the vertical side of each base on the side of the corresponding hatch coaming, horizontally and laterally arranged second support columns are also provided at intervals, with the end of each second support column away from the corresponding base abutting against the outer surface of the corresponding hatch coaming. On the side of the corresponding hatch coaming away from the storage timber frame... Inside each base, a guide plate is vertically and horizontally positioned. The upper end of each guide plate extends in an arc shape towards the corresponding base and is bolted to the inclined surface of the corresponding base, ensuring that its inner arc surface abuts against the upper end of the corresponding hatch coaming. On the side of each guide plate near the corresponding hatch coaming, a first support column is horizontally and vertically spaced. The end of each first support column away from the corresponding guide plate abuts against the inner surface of the corresponding hatch coaming. The abutting cooperation of the first and second support columns positions the hatch coaming protection device. The distance between the two guide plates is consistent with the distance between the two bases, forming a guide groove that matches the emergency towing chain. The guide groove guides the emergency towing chain and ensures that the emergency towing chain will not damage the hatch coaming when it is pulled out of the compartment.

8. A system for hoisting emergency towing chains from a compartment according to claim 7, characterized in that: It also includes a first rubber pad and a second rubber pad; a matching first rubber pad is also vertically attached and fixed to the end face of each first support column away from the corresponding guide plate, and each first support column abuts against the inner side of the corresponding hatch coaming through the first rubber pad, and the first rubber pad increases friction and provides protection; a matching second rubber pad is also vertically attached and fixed to the end face of each second support column away from the corresponding base, and each second support column abuts against the outer side of the corresponding hatch coaming through the second rubber pad, and the second rubber pad increases friction and provides protection.

9. A system for hoisting an emergency towing chain from a compartment according to claim 7, characterized in that: Each of the bases has a vertically inserted through hole at the middle position. The light-reducing holes are not interfered with by the connecting column and the second support column, and do not interfere with the screwing action of the guide plate and the base. Thus, the weight of the hatch coaming protection device is reduced by the light-reducing holes to ensure that the hatch coaming protection device is easy to transport and assemble.

10. A system for hoisting an emergency towing chain from a compartment according to claim 1, characterized in that: A matching hatch cover is also horizontally provided on the upper surface of the hatch coaming, and after the hatch coaming protection device is removed, the emergency towing chain stored in the cabin is protected by installing the hatch cover.