liquefied gas carrier

Abstract

To provide a structure which disperses vaporized gas leaked from a penetration part of a cargo tank, from a ship without being taken in a structure in a liquefied gas carrier.SOLUTION: A liquefied gas carrier comprises a hull where a bow region, a cargo region, and a stern region lined from the bow in the bow direction are specified, a bow structure a part of or all of which are arranged on an upper deck in the bow region of the hull and including a bridge, a cargo tank a part of which is arranged under the upper deck in the cargo region of the hull and capable of storing the liquefied gas, and a stern structure a part of or all of which are arranged in the stern region of the hull. The cargo tank has a penetration part at a higher position than the tank top height regulated on the cargo tank. The tank top height is higher than the height of the bow structure and of the stern structure, and the height of the tank bottom is lower than a load water line.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to liquefied gas carriers. [Background technology]

[0002] Conventionally, ships have been known in which the bridge is located at the bow and the cargo area is located aft of the bridge in order to reduce the height of the accommodation structure with the bridge while ensuring sufficient forward visibility, including forward visibility. Patent Documents 1 and 2 disclose ships of this type.

[0003] The commercial vessel of Patent Document 1 has a bridge and accommodation structure consisting of a main bridge and accommodation area located at the stern, an auxiliary bridge located forward of the center of the hull, and a cargo area located between the auxiliary bridge and the accommodation structure with bridge.

[0004] The liquefied gas carrier of Patent Document 2 has a living structure with a bridge located at the front of the hull, a cargo equipment room and a chimney located at the rear of the hull, and liquefied gas tanks for storing liquefied gas located between the living structure with a bridge and the cargo equipment room. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-55771 [Patent Document 2] Japanese Patent Application Publication No. 2019-55692 Summary of the Invention [Problem to be solved by the invention]

[0006] On liquefied gas carriers, exposed penetrations in cargo tanks containing liquefied gas are concentrated at the top of the cargo tank body and the tank dome protruding from the top of the tank body. For example, unloading and loading pipes, safety valves, gas lines, and atmospheric release vents are located at the cargo tank penetrations. While leaks are unlikely to occur at the connections between these pipes or valves, they are an issue that should be considered in improving safety. Because vaporized liquefied gases such as LNG and liquefied hydrogen are odorless and flammable, if vaporized gas leaks from a cargo tank penetration, it is desirable to quickly disperse the vaporized gas from the ship without allowing it to accumulate.

[0007] In the ship of Patent Document 1, the auxiliary bridge located at the bow is positioned at the same height as the top of the cargo tank, but the height of the accommodation structure with bridge located at the stern is higher than the top of the cargo tank. Therefore, if vaporized gas leaks from the top of the cargo tank, the vaporized gas may flow toward the accommodation structure with bridge and be sucked in through openings or ventilation equipment within the structure. In the ship of Patent Document 2, the height of the accommodation structure with bridge located at the bow is lower than the top of the cargo tank, but the height of the cargo equipment room located at the stern is higher than the top of the cargo tank. Therefore, if vaporized gas leaks from the top of the cargo tank, the vaporized gas may flow toward the cargo equipment room.

[0008] The present disclosure has been made in consideration of the above circumstances, and its purpose is to propose a structure for a liquefied gas carrier that disperses vaporized gas leaking from a penetration at the top of a cargo tank from the ship without it being taken into the structure. [Means for solving the problem]

[0009] A liquefied gas carrier according to one aspect of the present disclosure includes: A hull with a bow area, a cargo area, and a stern area aligned from the bow to the length of the ship; a bow structure including a bridge, disposed in part or in whole on the upper deck in the bow region of the hull; a cargo tank capable of containing liquefied gas, the cargo tank being partially disposed below the upper deck in the cargo area of ​​the hull; a stern structure disposed partly or entirely on the upper deck in the stern region of the hull; an engine casing disposed on the upper deck in the stern region of the hull and a funnel protruding upward from the engine casing; Equipped with The cargo tank a tank body and a tank dome protruding upward from the top of the tank body, the top of the tank dome having at least one through-hole communicating the inside and outside, the height of the top of the tank dome being defined as the tank top height; The height of the tank top is the height of the bow structure , the height of the chimney, and the height of the tank bottom is lower than the load waterline. [Effects of the Invention]

[0010] According to the present disclosure, a structure can be proposed for a liquefied gas carrier that disperses gas leaking from a penetration at the top of a cargo tank from the ship without it being taken in by the structure. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a side view showing the overall configuration of a liquefied gas carrier according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view of a liquefied gas carrier including cargo tanks. [Figure 3] FIG. 3 is a side view showing the overall configuration of a liquefied gas carrier according to the first modification. DETAILED DESCRIPTION OF THE INVENTION

[0012] Next, an embodiment of the present disclosure will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a liquefied gas carrier 1 according to an embodiment of the present disclosure. The liquefied gas carrier 1 shown in FIG. 1 is a liquefied hydrogen carrier that transports liquefied hydrogen. However, the liquefied gas carrier 1 may also be a ship that transports liquefied gas such as LNG or LPG. The liquefied gas carrier 1 has a hull 2 ​​that is composed of a bottom, side walls, an upper deck 18, etc. A propeller 28 and a rudder 29 are disposed at the stern of the hull 2. The hull 2 ​​is defined with a bow area R1, a cargo area R2, and a stern area R3 that are aligned longitudinally from the bow.

[0013] The cargo area R2 is divided into multiple holds 21 lined up in the longitudinal direction by bulkheads 22. The section in the longitudinal direction from the transverse bulkhead 22 forming the forward wall of the hold 21 closest to the bow to the transverse bulkhead 22 forming the aft wall of the hold 21 closest to the stern is called the cargo area R2. The area on the bow side (i.e., forward side) of the cargo area R2 of the hull 2 ​​is called the bow area R1. The area on the stern side (i.e., rearward side) of the cargo area R2 of the hull 2 ​​is called the stern area R3.

[0014] A cargo tank 3 is arranged in each hold 21. Since the liquefied gas carrier 1 according to this embodiment is a liquefied hydrogen carrier, the cargo tanks 3 are liquefied hydrogen tanks for transporting liquefied hydrogen. The liquefied gas carrier 1 according to this embodiment is equipped with four cargo tanks 3. However, the number of cargo tanks 3 equipped on the hull 2 ​​may be one, or two or more.

[0015] In this embodiment, the four cargo tanks 3 have substantially the same structure. However, if the liquefied gas carrier 1 is equipped with multiple cargo tanks 3, the multiple cargo tanks 3 may have different structures.

[0016] Fig. 2 is a cross-sectional view of the liquefied gas carrier 1. As shown in Figs. 1 and 2, the cargo tank 3 has a tank body 31 that stores liquefied gas and a tank dome 33 that protrudes upward from the top of the tank body 31. The tank body 31 does not necessarily have to be spherical, and may have a cylindrical shape that is elongated in the horizontal direction or a cylindrical shape that is elongated in the vertical direction. Alternatively, the tank body 31 may have a cubic or rectangular parallelepiped shape.

[0017] The lower part of the cargo tank 3 is accommodated in the hold 21. The height of the tank bottom of the cargo tank 3 is lower than the load waterline. The upper part of the cargo tank 3 is covered by the tank cover 6. In other words, the cargo tank 3 is surrounded by the bulkhead 22 and the tank cover 6, which are components of the hull 2 ​​that form the hold 21. The upper part of the tank dome 33 penetrates the tank cover 6 and protrudes above the tank cover 6, making it exposed. At least one penetration 30 that communicates between the inside and outside of the cargo tank 3 is provided in the exposed part of the tank dome 33. For example, piping for unloading and loading, a safety valve, a vent line, and a gas line are arranged in the penetration 30.

[0018] A vent mast 27 is erected on the top of the tank cover 6 or on the tank dome 33. The vent mast 27 may be erected on the upper deck 18. A vent line extending from the tank dome 33 is connected to the vent mast 27. Vaporized gas is discharged from the cargo tank 3 via the tank dome 33 to the vent mast 27 through this vent line. The vent mast 27 has a passage that directs the vaporized gas to the atmosphere, and an atmosphere discharge port is provided at the top of the vent mast 27.

[0019] Returning to FIG. 1 , part or all of the bow structure 12 is located on the upper deck 18 of the bow area R1. The bow structure 12 has multiple floors, the top floor of which is the bridge 13. The bridge 13 is a place for navigation and maneuvering, and includes the wheelhouse 11 and the bridge wing. In addition to the bridge 13, the bow structure 12 also has a bow functional area 14 located below the bridge 13. The bow functional area 14 includes at least one of a first accommodation area, an equipment room for arranging equipment related to safe operation, a storeroom for storing navigation equipment, a cable wiring area, a battery room, a passageway, and a staircase. Examples of spaces included in the first accommodation area include a toilet, a washroom, a pilot's waiting room, a duty room, and a duty pantry. The first accommodation area may also include public rooms, living quarters, an office, a sickroom, a pantry, a galley for providing meals to the crew, a dining room, etc. Examples of equipment that may be placed in the equipment room include navigation equipment such as a gyrocompass and a VDR (nautical information recording device), the control unit of an automatic telephone exchange, the control unit of an in-ship broadcasting system, an antenna earth switching unit for an MF / HF transmitter / receiver, and a radar transmitter / receiver.

[0020] A radar mast 24 is mounted on the top of the bow structure 12. Furthermore, antennas for radar, VHF, Inmarsat, MF / HF, etc. may be disposed on the top of the bow structure 12.

[0021] A bow equipment 19 is disposed below the upper deck 18 in the bow region R1 of the hull 2 ​​and below the bow structure 12. The bow equipment 19 may be sewage treatment equipment for treating sewage generated in the bow structure 12. The sewage treatment equipment includes a sewage treatment device, a sewage treatment tank, and a sewage transfer pump. The sewage transfer pump transfers sewage from the bow structure 12 to the stern structure 15 (described later) through piping extending in the longitudinal direction of the ship. Alternatively, the bow equipment 19 may be air conditioning equipment for the bow structure 12. The air conditioning equipment includes an outdoor unit. Alternatively, the bow equipment 19 may be purified water storage equipment. The purified water storage equipment includes a purified water tank, a purified water pump, and a purified water booster pump. The purified water may include drinking water. Alternatively, the bow equipment 19 may be seawater storage equipment. The seawater storage facility includes a seawater tank, a seawater pump, and a seawater booster pump. The seawater may include seawater for firefighting.

[0022] An engine room 35 is provided inside the hull 2 ​​in the stern area R3. Machinery such as a main engine 34, a generator, and a boiler are installed in the engine room 35. The main engine 34 is connected to a propeller 28 disposed at the stern of the hull 2 ​​by a propeller shaft.

[0023] Part or all of the stern structure 15 is located on the upper deck 18 of the stern area R3. The stern structure 15 has multiple floors, and inside it is configured the stern functional section 16. The stern functional section 16 is provided with at least one of the following: a second accommodation area, a cargo equipment room, an electrical equipment room, a storeroom, a cargo handling control room for monitoring and controlling cargo, and an engine control room. The second accommodation area is provided with public rooms, living quarters, an office, a sickroom, a pantry, a galley for providing meals to the crew, a dining room, etc.

[0024] The stern structure 15 may be a plurality of independent structures. The liquefied gas carrier 1 according to Modification 1 shown in FIG. 3 includes a first stern structure 15A and a second stern structure 15B. The second stern structure 15B is located further stern than the first stern structure 15A and is independent of the first stern structure 15A. A cargo equipment room is provided in the first stern structure 15A. Cargo equipment is disposed in the cargo equipment room. The cargo equipment includes, for example, cargo pumps, compressors, cargo heaters, and vaporizers. It is desirable to provide a gap between the cargo equipment room and the engine room 35, and the cargo equipment room is provided on the second floor or higher above the first stern structure 15A. A third accommodation space is provided in the second stern structure 15B. If the third accommodation space is provided in the second stern structure 15B, the size of the first accommodation space provided in the bow structure 12 may be reduced. Alternatively, the third accommodation area may be used as a living space for the engine room 35 located below the second stern structure 15B. It is desirable to provide the second stern structure 15B between the upper deck 18 and the upper and lower cargo equipment room of the first stern structure 15A from the viewpoint of separating the cargo equipment room from the accommodation area.

[0025] Returning to Figures 1 and 2, the bow structure 12 and the stern structure 15 are connected by unexposed connecting passages 37, 38 extending in the longitudinal direction of the ship. The connecting passage 38 may be an under-deck passage 38 provided below the upper deck 18. This under-deck passage 38 is a passage that passes under the upper deck 18 and connects the area below the bow structure 12 and the area below the stern structure 15. Crew members descend from the bow structure 12 to below the upper deck 18, pass through the under-deck passage 38 to move below the stern structure 15, and then ascend to the stern structure 15. The under-deck passage 38 may be a connecting passage between the bow structure 12 and the engine room 35. The connecting passage 37 may also be an exposed or unexposed flying passage 37 provided above the upper deck 18. The unexposed flying passage 37 is formed, for example, as a tunnel-like passage surrounded by steel walls. This flying passage 37 directly connects the upper floor of the bow structure 12 with the upper floor of the stern structure 15 .

[0026] An engine casing 36 is disposed on the upper deck 18 of the aft area R3, rearward of the aft structure 15. The engine casing 36 covers and surrounds the exhaust pipes of the boiler and main engine 34, which are disposed up to above the engine room 35, and a chimney 48 connected to this exhaust pipe protrudes from the top of the engine casing 36.

[0027] A rear monitoring radar 39 is installed on the top of the engine casing 36 or on the top of the stern structure 15. Information detected by the rear monitoring radar 39 is displayed on a monitor installed in the wheelhouse 11 of the bridge 13. This allows crew members to grasp the situation at the stern while staying in the wheelhouse 11.

[0028] In the liquefied gas carrier 1 configured as described above, the height of the structure including the area where the crew members work and live is always lower than the "tank top height H0" of the cargo tank 3. In other words, the tank top height H0 of the cargo tank 3 is always higher than the height of the structure including the area where the crew members work and live. Here, the tank top height H0 may be defined as the height of the lowest point among the points where vaporized gas may leak from the cargo tank 3. From this perspective, the tank top height H0 may be defined as the height of the boundary between the exposed and unexposed parts of the cargo tank 3. In the liquefied gas carrier 1 according to this embodiment, the cargo tank 3 is covered with the tank cover 6 except for the upper part of the tank dome 33, and the height of the lowest part of the tank dome 33 of the cargo tank 3 that is exposed above the tank cover 6 is the tank top height H0. Alternatively, the tank top height H0 may be defined as the height of the lowest penetration 30 among the penetrations 30 provided in the tank dome 33 of the cargo tank 3. Alternatively, when many of the penetrations 30 are concentrated at the top of the tank dome 33, the tank top height H0 may be defined as the height of the top of the tank dome 33. The reference height may be a horizontal line defined on the hull 2, such as the load waterline.

[0029] More specifically, the tank top height H0 of the cargo tank 3 is higher than the height H1 of the bow structure 12 and the height H2 of the stern structure 15. In other words, the height H1 of the bow structure 12 and the height H2 of the stern structure 15 are lower than the tank top height H0. The height H1 of the bow structure 12 is the height of the space where the crew members actually stay, excluding the radar mast 24 and antenna arranged at the top of the bow structure 12. However, the height H1 of the bow structure 12 may be the height including the radar mast 24 and antenna. The height H2 of the stern structure 15 is the height of the space where the crew members actually stay, excluding the rearward looking radar 39 and antenna arranged at the top of the stern structure 15. However, the height H2 of the stern structure 15 may be the height including the rearward looking radar 39 and antenna.

[0030] In the liquefied gas carrier 1 configured as described above, it is desirable that the tank top height H0 of the cargo tank 3 is higher than the height of the engine casing 36. In other words, it is desirable that the height of the engine casing 36 is lower than the tank top height H0. Here, the height of the engine casing 36 may be the height of the space where the crew may actually be staying, excluding the rear-looking radar 39 and antennas arranged at the top of the engine casing 36 and the chimney 48 protruding from the engine casing 36. Furthermore, it is desirable that the tank top height H0 of the cargo tank 3 is higher than the height of the chimney 48. In other words, it is desirable that the height of the chimney 48 is lower than the tank top height H0.

[0031] <Summary> As described above, the liquefied gas carrier 1 according to this embodiment has the following features: A hull 2 ​​having a bow area R1, a cargo area R2, and a stern area R3 arranged in the longitudinal direction from the bow, A bow structure 12 including a bridge 13, which is partially or entirely disposed on the upper deck 18 in the bow region R1 of the hull 2; a cargo tank 3 capable of containing liquefied gas, the cargo tank 3 being partially disposed below the upper deck 18 in the cargo area R2 of the hull 2; A stern structure 15 is provided, the stern structure 15 being partially or entirely disposed on the upper deck 18 in the stern region R3 of the hull 2; The cargo tank 3 has a penetration 30 at a position higher than the tank top height H0 specified for the cargo tank 3, and is characterized in that the tank top height H0 is higher than the height H1 of the bow structure 12 and the height H2 of the stern structure 15, and the height of the tank bottom is lower than the load waterline.

[0032] As mentioned above, the cargo tank 3 has a penetration 30 provided in the exposed portion of the tank top, and there is a possibility that vaporized cargo gas may leak from this penetration 30. Because vaporized gases such as hydrogen gas are lighter than air, vaporized gas leaking from the penetration 30 of the cargo tank 3 rarely flows below the tank top height H0. In other words, the vaporized gas is prevented from flowing to the bow structure 12 and the stern structure 15, which are lower than the tank top height H0. Furthermore, because the tank top height H0 is higher than the height H1 of the bow structure 12 and the height H2 of the stern structure 15, the flow of vaporized gas leaking from the penetration 30 of the cargo tank 3 flows above these structures 12, 15, thereby reducing the possibility that the vaporized gas will be sucked into the interior through the ventilation openings provided in these structures 12, 15.

[0033] Ships such as catamarans and barges are known in which the bottoms of cargo tanks are located higher than the designed load waterline. In such ships, the hull shape makes it difficult to store and position cargo tanks within the hull, and the tank tops may be located higher than the bow and stern structures. However, cargo tanks located higher in the hull increase wind resistance, which can lead to concerns about poor maneuverability and the need for larger mooring equipment when berthing. Meanwhile, unlike catamarans and barges, the liquefied gas carrier 1 according to the present disclosure has its tank bottoms located lower than the designed load waterline. In a monohull ship in which cargo tanks 3 are stored inside the hull 2, such as the liquefied gas carrier 1, the cargo tanks 3 can be located lower than in a catamaran or barge. However, this increases the likelihood of the leaked gas being sucked in through openings in the structure. Therefore, in a monohull ship, in order to reduce wind resistance and the possibility of inhaling leaked gas, that is, to ensure that the top of the cargo tank 3 is not higher than the bow structure 12 and the stern structure 15, it is effective to reduce the height of the structure as disclosed in the present disclosure rather than increasing the tank height.

[0034] In the liquefied gas carrier 1 described above, the stern structure 15 may include at least one of a second accommodation space and a cargo equipment room (stern functional space 16).

[0035] Furthermore, in the above-mentioned liquefied gas carrier 1, the stern structure 15 may have a first stern structure 15A including a cargo equipment room, and a second stern structure 15B that is located further stern than the first stern structure 15A, is independent from the first stern structure 15A, and includes living quarters.

[0036] In this way, by providing some or all of the functions of the accommodation area in the second stern structure 15B, which is located further stern than the first stern structure 15A, the building height of the bow structure 12 can be reduced.

[0037] The liquefied gas carrier 1 according to this embodiment further includes an engine casing 36 disposed on the upper deck 18 in the stern region R3 of the hull 2, and a chimney 48 protruding upward from the engine casing 36, and the tank top height H0 is higher than the height of the chimney 48. High-temperature exhaust gas and soot are discharged from the chimney 48. In this embodiment, in addition to the bow structure 12 and the stern structure 15, the height of the chimney 48 is also lower than the tank top height H0, so that it is possible to prevent the vaporized gas leaking from the penetration 30 of the cargo tank 3 from mixing with the gas discharged from the chimney 48, thereby eliminating the risk of fire, etc.

[0038] Furthermore, in the above-described liquefied gas carrier 1, the bow structure 12 may include a first accommodation space (bow functional compartment 14). In this way, by arranging at least a part of the functions of a conventional accommodation space in the bow structure 12, it is possible to keep the height of the stern structure 15 low. Note that the functions of a conventional accommodation space may be concentrated in the bow structure 12, or may be distributed between the bow structure 12 and the stern structure 15, or may be arranged in the hull 2 ​​below the upper deck 18 in addition to the bow structure 12 and the stern structure 15.

[0039] The liquefied gas carrier 1 may also be provided with unexposed connecting passageways 37, 38 that connect the bow structure 12 and the stern structure 15. This allows crew members to quickly move between the bow structure 12 and the stern structure 15 through the connecting passageways 37, 38 without going out into the exposed areas.

[0040] Furthermore, the liquefied gas carrier 1 described above may have an engine room 35 located below the upper deck 18 in the stern region R3 of the hull 2, and may be provided with an unexposed connecting passageway 38 that connects the bow structure 12 and the engine room 35. This allows crew members to move quickly between the bow structure 12 and the engine room 35 through the connecting passageway 38 without going out into the exposed area.

[0041] Furthermore, the liquefied gas carrier 1 may have at least one of a sewage treatment facility, a purified water storage facility, a seawater storage facility, and an air conditioning facility disposed below the upper deck 18 in the bow region R1 of the hull 2 ​​and below the bow structure 12. This allows the space below the bow structure 12 to be used effectively.

[0042] The foregoing disclosure has been presented for purposes of illustration and description and is not intended to limit the invention to the form disclosed herein. For example, in the foregoing Detailed Description, various features of the present disclosure are grouped together in a single embodiment for the purpose of streamlining the disclosure. However, multiple features included in the present disclosure can be combined into alternative embodiments, configurations, or aspects other than those discussed above.

[0043] Furthermore, the correlation between the height H1 of the bow structure 12, the height H2 of the stern structure 15, and the tank top height H0 in the liquefied gas carrier 1 according to the above embodiment may be applied to other liquefied gas carriers and marine structures other than the liquefied gas carrier 1. Examples of marine structures include floating storage facilities, floating storage and regasification facilities, and liquefied gas reliquefaction facilities. [Explanation of symbols]

[0044] 1: Liquefied gas carrier 2: Hull 3: Cargo tank 12: Bow structure 13: Funabashi 14: Bow functional section 15: Stern structure 16: Aft functional area 18: Upper deck 19: Bow equipment 26: Independent living quarters 28: Chimney 30: Penetration section 36: Engine casing 37: Connecting Passage (Flying Passage) 38: Connecting passage (under deck passage) R1: Bow area R2: Cargo area R3: Stern area H0: Tank top height H1: Height of bow structure H2: Height of stern structure

Claims

1. A hull with a bow area, a cargo area, and a stern area aligned from the bow to the length of the ship; a bow structure including a bridge, disposed in part or in whole on the upper deck in the bow region of the hull; a cargo tank capable of containing liquefied gas, the cargo tank being partially disposed below the upper deck in the cargo area of ​​the hull; a stern structure disposed partly or entirely on the upper deck in the stern region of the hull; an engine casing disposed on the upper deck in the stern region of the hull; and a funnel protruding upward from the engine casing, The cargo tank has a tank body and a tank dome protruding upward from the top of the tank body, and the top of the tank dome has at least one penetration that communicates the inside and outside, the height of the top of the tank dome is defined as the tank top height, the tank top height is higher than the height of the bow structure, the height of the funnel, and the height of the stern structure, and the height of the tank bottom is lower than the load waterline, Liquefied gas carrier.

2. At least one of a sewage treatment facility, a purified water storage facility, a seawater storage facility, and an air conditioning facility is disposed below the upper deck in the bow region of the hull and below the bow structure.

2. A liquefied gas carrier according to claim 1.

3. the bow structure includes a first accommodation; 3. A liquefied gas carrier according to claim 1 or 2.

4. the aft structure includes a second accommodation; A liquefied gas carrier according to any one of claims 1 to 3.

5. the aft structure includes a cargo equipment room; A liquefied gas carrier according to any one of claims 1 to 3.

6. the stern structure includes a first stern structure including a cargo equipment room, and a second stern structure that is disposed aft of the first stern structure, is independent from the first stern structure, and includes an accommodation area; A liquefied gas carrier according to any one of claims 1 to 4.

7. Further provided is a non-exposed connecting passageway connecting the bow structure and the stern structure. A liquefied gas carrier according to any one of claims 1 to 6.

8. An engine room is arranged below the upper deck in the stern region of the hull, a non-exposed connecting passageway connecting the bow structure and the engine room; A liquefied gas carrier according to any one of claims 1 to 6.

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