Floating structure

Abstract

A floating structure according to one embodiment of the present disclosure is provided with: a cargo area of a hull for storing liquefied gas; a bow region of the hull located forward of the cargo region; and a residential area located in the bow area, the residential area including: an outboard floor located above the exposed deck; and an inboard floor located below the exposed deck, the ship width direction end portion of a lower floor including the lowermost floor of the outboard floor being located further inward in the ship width direction than the ship width direction end portion of the ship body in the bow region, and the ship width direction end portion of the lower floor including the lowermost floor of the outboard floor being located further inward in the ship width direction than the ship width direction end portion of the ship body in the bow region. At least one end portion of the inboard floor in the ship width direction is positioned further outward in the ship width direction than the end portion of the lower floor in the ship width direction.

Description

Technical Field

[0001] The present disclosure relates to floating structures. Background Art

[0002] In floating structures having cargo areas such as liquefied gas tankers, structures such as living quarters are arranged in the bow area or the stern area away from the cargo area (see Patent Document 1 below). When the living quarters are arranged in the bow area, various equipment including passages, ventilation devices, stairs, mooring equipment, lifesaving equipment, and loading and unloading equipment related to the living quarters are arranged on the exposed deck in the bow area. In this case, by reducing the size of the living quarters in the ship width direction, it is possible to ensure space outside the living quarters in the ship width direction, and arrange various equipment in the space.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2016-88214 Summary of the invention

[0006] Problems to be solved by the invention

[0007] On the other hand, when the ship width dimension of the living area is reduced, the volume of the living area may be insufficient. Therefore, an object of the present disclosure is to provide a floating structure that can ensure space outside the living area in the ship width direction and has a sufficient volume of the living area.

[0008] Means for solving problems

[0009] A floating structure according to one embodiment of the present invention comprises: a cargo area of ​​a hull storing liquefied gas; a bow area of ​​the hull located forward of the cargo area; and a living area located in the bow area, the living area comprising: an outer floor located above an exposed deck; and an inner floor located below the exposed deck, an end in the ship width direction of a lower floor including the lowest floor of the outer floor being located inward in the ship width direction of an end in the ship width direction of the hull in the bow area, and at least one end in the ship width direction of the inner floor being located outward in the ship width direction of an end in the ship width direction of the lower floor.

[0010] Effects of the Invention

[0011] According to this configuration, it is possible to provide a floating structure in which a space can be secured outside the living area in the ship width direction and the volume of the living area is sufficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side view of the floating structure.

[0013] Figure 2 This is a top view of the floating structure.

[0014] Figure 3 yes Figure 1 Cross-sectional view taken along arrow III-III. DETAILED DESCRIPTION

[0015] Hereinafter, the floating structure 100 according to the embodiment will be described. Figure 1 It is a side view of the floating structure 100. Figure 2 1 is a top view of the floating structure 100 . Figure 3 yes Figure 1 The floating structure 100 of this embodiment is a liquefied gas transport ship for transporting liquefied gas. The floating structure 100 may be a floating production storage and loading vessel (FPSO), a floating LNG storage and regasification vessel (FSRU), a floating production and loading vessel (FPO), a floating storage and loading vessel (FSO), etc.

[0016] in addition, Figure 1 The right side of the paper is the front of the floating structure 100, hereinafter referred to as "the front". Figure 1 The left side of the paper is the rear of the floating structure 100, which is hereinafter referred to as the "rear". In addition, the front-to-back direction of the floating structure 100 is hereinafter referred to as the "front-to-back direction". Figure 2 The up-and-down direction on the paper is the width direction of the floating structure 100, which is hereinafter referred to as the "ship width direction". Figure 3 The left-right direction of the paper is the width of the ship.

[0017] like Figure 1 As shown, the floating structure 100 includes a cargo area 11, a bow area 12, a stern area 13, an internal passage 21, a cofferdam 22, a fuel tank 23, a deck chief storage 24, and a living area 30. These components will be described below in order.

[0018] The cargo area 11 is an area for storing liquefied gas. Examples of liquefied gas include liquefied hydrogen, liquefied natural gas (LNG), liquefied petroleum gas (LPG), etc. The cargo area 11 of this embodiment is located in the center of the front-rear direction of the hull 10. In the cargo area 11, a plurality of cargo tanks 14 for storing liquefied gas are arranged in the front-rear direction. In addition, the number, arrangement, and shape of the cargo tanks 14 are not limited.

[0019] The bow area 12 is an area located in the front portion of the hull 10. That is, the bow area 12 is located forward of the cargo area 11. As described later, the living area 30 and the like are arranged in the bow area 12.

[0020] The stern area 13 is an area located at the rear portion of the hull 10. That is, the stern area 13 is located at a position rearward of the cargo area 11. In the present embodiment, the engine room 25 is located in the stern area 13. The engine room 25 accommodates an internal combustion engine 27 that drives a propeller 26 for propulsion.

[0021] The internal passage 21 is a passage for the crew to move within the hull 10. The internal passage 21 is located below the exposed deck 15 and passes through the cargo area 11. Figure 2 As shown, the internal passage 21 is located at both ends of the width direction of the hull 10, and extends in the front-rear direction along the side 16 of the hull 10. In addition, handrails and chains can also be provided in the internal passage 21 to enable safe passage when the hull is swaying.

[0022] The cofferdam 22 is a cavity between the fuel tank 23 and the living area 30. Figure 1 As shown, the isolation cabin 22 of this embodiment is located in the bow area 12. In addition, as shown in FIG. Figure 3 As shown, the cofferdam 22 is located below the living area 30 described later and is adjacent to the living area 30. In addition, the cofferdam 22 only needs to be positioned in a manner that covers the fuel tank 23, and the end of the cofferdam 22 in the ship width direction may also be located inward of the end of the hull 10 in the ship width direction. In addition, the cofferdam 22 is always ventilated. In the case where there is a space adjacent to the cofferdam 22 (such as a hoistway), the space adjacent to the cofferdam 22 may be connected, and the cofferdam 22 may be ventilated using a ventilation device shared with the adjacent space.

[0023] The fuel tank 23 is a tank for storing fuel to be supplied to the internal combustion engine 27. Figure 1 As shown, the fuel tank 23 of this embodiment is located in the bow area 12 of the hull 10. Figure 3 As shown, the fuel tank 23 is located below the cofferdam 22 and adjacent to the cofferdam 22. In addition, the fuel tank 23 of the present embodiment is formed to be surrounded by the side surface 16 and the bottom surface 17 of the hull 10 via the ballast tank 18. In the present embodiment, the cofferdam 22 is located between the fuel tank 23 and the living area 30, so even if the fuel leaks from the fuel tank 23, the fuel and the combustible fuel evaporation gas will not invade the living area 30. As a result, the lower part of the hull 10 in the bow area 12 can be effectively and safely used as the fuel tank 23.

[0024] The deck captain warehouse 24 is a warehouse for storing equipment and goods. Figure 1As shown, the deck captain's warehouse 24 is located in the bow area 12 of the hull 10 and is located forward of the living area 30. In the present embodiment, the deck captain's warehouse 24 is adjacent to the living area 30 in the front-rear direction. In addition, the deck captain's warehouse 24 of the present embodiment is located below the exposed deck 15.

[0025] The living area 30 is a structure that includes the area where the crew members work and live. In addition to the space where the crew members live, it also includes business areas for operating cargo equipment, equipment rooms, warehouses, stairs, passages, meeting rooms, and reception rooms. The living area 30 of this embodiment is located in the bow area 12 of the hull 10. In addition, as shown in FIG. Figure 3 As shown, the living area 30 is located at the center of the ship width direction of the hull 10. In addition, the living area 30 includes an outer floor 31, an inner floor 32 and an elevator 33.

[0026] The outer deck 31 is a portion of the living area 30 located above the exposed deck 15. The outer deck 31 of the present embodiment has four layers, namely, a first layer 41, a second layer 42, a third layer 43, and a fourth layer 44, from the bottom. However, the number of layers of the outer deck 31 is not limited thereto. In addition, the first layer 41 located at the bottom constitutes the lower deck 34, and the second layer 42, the third layer 43, and the fourth layer 44 located above the lower deck 34 constitute the upper deck 35. In addition, in the present embodiment, the dimensions of the layers 42 to 44 constituting the upper deck 35 in the ship width direction are different, but the dimensions of the layers 42 to 44 in the ship width direction may be the same.

[0027] The end of the lower floor 34 in the ship width direction is located at a position on the inner side of the ship width direction of the end of the hull 10 in the bow area 12. Therefore, it is possible to ensure a space on the outer side of the living area 30 (lower floor 34) in the ship width direction and on the exposed deck 15. As a result, it is possible to arrange passages and various equipment in the space. In addition, the lower floor 34 of the present embodiment is composed of one layer (the first layer 41), but the lower floor 34 may also include a plurality of layers.

[0028] On the other hand, the end of the upper deck 35 in the ship width direction is located at a position on the outer side in the ship width direction than the end of the lower deck 34 in the ship width direction. That is, the dimension of the upper deck 35 in the ship width direction is larger than the dimension of the lower deck 34 in the ship width direction. In this way, by increasing the dimension of the upper deck 35 in the ship width direction, the volume of the living area 30 can be increased. In addition, the end of the upper deck 35 in the ship width direction refers to the end located most on the outer side in the ship width direction among the ends of the layers 42 to 44 constituting the upper deck 35 (at the end of the lower deck 34). Figure 3 The middle is the end portion of the second layer 42 in the ship width direction).

[0029] The ship's interior floor 32 is a portion of the accommodation area 30 located below the exposed deck 15. The ship's interior floor 32 of the present embodiment has a 0th floor 40. The ship's interior floor 32 of the present embodiment has only one floor, but the ship's interior floor 32 may have a plurality of floors.

[0030] In addition, the end of the inboard floor 32 in the ship width direction is located at a position that is outward in the ship width direction from the end of the lower floor 34 in the ship width direction. That is, the size of the inboard floor 32 in the ship width direction is larger than the size of the lower floor 34 of the outer floor 31 in the ship width direction. In this way, by providing the inboard floor 32 in the living area 30, the size of the inboard floor 32 in the ship width direction is further increased, and the volume of the living area 30 can be increased. In addition, in the case where the inboard floor 32 has a plurality of floors, the end of the inboard floor 32 in the ship width direction refers to the position that is located most outward in the ship width direction among the ends of the plurality of floors of the inboard floor 32. In addition, in the present embodiment, both ends of the inboard floor 32 in the ship width direction are located outward in the ship width direction from the end of the lower floor 34 in the ship width direction. However, only one end of the inboard floor 32 in the ship width direction may be located outward in the ship width direction from the end of the lower floor 34 in the ship width direction.

[0031] The ends of the inner deck 32 in the ship width direction are located at the ends of the hull 10 in the bow region 12 in the ship width direction, and the inner deck 32 is connected to the front ends of the internal passages 21 on both sides in the ship width direction (see also Figure 2 ). That is, the crew can pass between the inner floor 32 and the inner passage 21. Therefore, in this embodiment, the crew can move from the living area 30 through the inner passage 21 in the hull 10 without going outside the ship. In addition, in this embodiment, the rear end of the inner passage 21 is connected to the engine room 25. Therefore, in this embodiment, the crew can move from the living area 30 to the engine room 25 without going outside the ship.

[0032] In addition, the inboard floor 32 is connected to the deck captain's warehouse 24. That is, the crew can pass between the inboard floor 32 and the deck captain's warehouse 24. Therefore, in the present embodiment, the crew can move from the living area 30 to the deck captain's warehouse 24 without going outside the ship. In addition, in the present embodiment, the floor height of the 0th floor 40 of the inboard floor 32 is consistent with the floor height of the deck captain's warehouse 24, but they may be different.

[0033] The elevator 33 extends in the vertical direction in the living area 30. The upper part of the elevator 33 of this embodiment is located at the fourth floor 44, and the lower part is located at the 0th floor 40. In addition, the part of the living area 30 corresponding to the elevator 33 protrudes downward. Therefore, the lower part of the elevator 33 can be located at the 0th floor 40, and the crew can move to the lowest floor of the living area 30 using the elevator 33. In addition, in this embodiment, the 0th floor 40 (living area 30) is adjacent to the isolation cabin 22 in the vertical direction, so the part of the living area 30 corresponding to the elevator 33 can be protruded downward.

[0034] In addition, at least a part of the upper floor 35 may be constituted by a bridge. That is, the living area 30 may include a bridge constituting at least a part of the upper floor 35. In this case, the elevator 33 may connect the inboard floor 32 to the bridge. In addition, the elevator 33 may connect the inboard floor 32 to a floor other than the bridge of the upper floor 35, and connect the floor other than the bridge of the upper floor 35 to the bridge by stairs. Furthermore, the living area 30 may include a lifting device other than the elevator 33 instead of the elevator 33.

[0035] In addition, the manifold piping for delivering liquefied gas to external equipment is located in the cargo area 11. A fire extinguishing device for extinguishing a flame generated near the manifold piping may be arranged on the bow area 12 side when viewed from the manifold piping. When the living area 30 is located in the bow area 12 as in the present embodiment, by arranging the fire extinguishing device in this way, the crew members who rush from the living area 30 can quickly carry out fire extinguishing activities. In addition, when the living area 30 is located in the bow area 12 as in the present embodiment, a drinking water tank for storing drinking water and a fresh water heater for generating hot water used for showering, etc. may also be arranged in the bow area 12. For example, the drinking water tank and the fresh water heater may also be arranged on the inner floor 32 of the living area 30.

[0036] <Conclusion>

[0037] The first item disclosed in the present specification is a floating structure comprising: a cargo area of ​​a hull storing liquefied gas; a bow area of ​​the hull located forward of the cargo area; and a living area located in the bow area, the living area including: an outer floor located above an exposed deck; and an inner floor located below the exposed deck, the ship width end of a lower floor including the lowest floor of the outer floor being located inward in the ship width direction of the ship width end of the hull in the bow area, and at least one end of the inner floor in the ship width direction being located outward in the ship width direction of the ship width end of the lower floor.

[0038] According to this structure, space can be ensured outside the living area (lower floor) in the ship width direction and on the exposed deck. In addition, according to this structure, an inner floor is provided in the living area, and the ship width direction dimension of the inner floor is increased, so the volume of the living area can be increased.

[0039] A second aspect disclosed in the present specification is the floating structure according to the first aspect, wherein the floating structure further comprises an internal passage located at an end in the width direction of the hull and passing through the cargo area, and the inboard floor is connected to the internal passage.

[0040] According to this structure, the crew can move within the hull from the living area through the internal passage without going outside the ship.

[0041] The third item disclosed in this specification is a floating structure according to the first or second item, wherein the floating structure further comprises: a hollow isolation cabin adjacent to the living area below the living area; and a fuel tank adjacent to the isolation cabin below the isolation cabin.

[0042] According to this configuration, the fuel tank can be arranged in the lower portion of the hull in the bow region, so that this portion can be effectively utilized.

[0043] A fourth item disclosed in the present specification is a floating structure according to any one of the first to third items, wherein the living area includes a lifting device connecting an upper floor of the outer floor located above the lower floor and the inner floor.

[0044] According to this structure, it is easy to reach the inner floor from the upper floor.

[0045] A fifth item disclosed in this specification is the floating structure according to the fourth item, wherein the lifting device is an elevator, and a portion of the living area corresponding to the elevator protrudes downward.

[0046] According to this structure, the lower part of the elevator can be arranged on the lowest floor of the residential area.

[0047] The sixth item disclosed in the present specification is a floating structure according to any one of the first to fifth items, wherein the end of the upper floor of the outer floor located above the lower floor in the ship width direction is located outside the ship width direction than the end of the lower floor in the ship width direction.

[0048] According to this structure, the dimension of the upper floor in the ship width direction is increased, so the volume of the living area can be increased.

[0049] The seventh item disclosed in the present specification is a floating structure according to any one of the first to sixth items, wherein the floating structure also has a deck captain's warehouse located forward of the living area in the bow area, and the inboard floor is connected to the deck captain's warehouse.

[0050] According to this structure, the crew can move from the living area to the deck captain's warehouse without going outside the ship.

[0051] Description of symbols

[0052] 10: Hull; 11: Cargo area; 12: Bow area; 13: Stern area; 14: Cargo tanks; 15: Exposed deck; 21: Internal passage; 22: Isolation compartment; 23: Fuel tank; 24: Deck captain's warehouse; 30: Living area; 31: Outer floor; 32: Inner floor; 33: Elevator; 34: Lower floor; 35: Upper floor; 100: Floating structure.

Claims

1. A floating structure, comprising: The cargo area of ​​the ship's hull, which stores liquefied gas; a bow region of the hull located forward of the cargo region; and a living area located in the bow area, The residential area includes: Outboard floors located above the exposed decks; and The interior floor of a ship, which is located below the exposed deck, The end in the ship width direction of the lower floor including the lowest floor of the outer floor is located inward in the ship width direction of the end in the ship width direction of the hull in the bow area, At least one end portion of the inner deck in the ship width direction is located on the outer side in the ship width direction than an end portion of the lower deck in the ship width direction.

2. The floating structure according to claim 1, wherein: The floating structure also has an internal passage located at the widthwise end of the hull and passing through the cargo area. The inboard floor is connected to the internal passage.

3. The floating structure according to claim 1, wherein: The floating structure also has: a hollow cofferdam located below and adjacent to the living area; and A fuel tank is disposed below the isolation compartment and adjacent to the isolation compartment.

4. The floating structure according to claim 1, wherein: The living area includes a lifting device that connects an upper floor of the outer floor located above the lower floor and the inner floor.

5. The floating structure according to claim 4, wherein: The lifting device is an elevator, A portion of the living area corresponding to the elevator protrudes downward.

6. The floating structure according to claim 1, wherein: An end portion in the ship width direction of an upper floor of the outer floor located above the lower floor is located outward in the ship width direction than an end portion in the ship width direction of the lower floor.

7. The floating structure according to claim 1, wherein: The floating structure further comprises a deck-length storage located in the bow region forward of the living area. The inner floor is connected to the deck long warehouse.

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