Marine vessel

Abstract

This marine vessel includes: a hull having a pair of ship sides; an upper deck provided on the hull; a tank provided in the hull and having an upper part penetrating through a center part in a ship width direction of the upper deck and projecting upward from the upper deck; a tank cover provided at an interval on an inner side in the ship width direction with respect to the pair of ship sides, covering a plurality of the tanks from above, and having a top flat surface extending in a bow-to-stern direction; and a bow deck formed so as to be continuous from the top flat surface to the bow side, and extending in the ship width direction between the pair of ship sides.

Description

ship

[0001] This application claims priority to Japanese Patent Application No. 2023-128012, filed on August 4, 2023, the contents of which are incorporated herein by reference.

[0002] A liquefied gas carrier has tanks capable of storing liquefied gas within its hull. Liquefied gas carriers are subject to certain restrictions on their main specifications, such as ship length and draft, due to facility requirements at ports where cargo handling takes place. Under these circumstances, in order to increase the amount of liquefied gas carried on a liquefied gas carrier, the tops of the tanks are made to protrude upward through a portion of the upper deck of the hull. Patent Document 1 discloses a configuration in which a tank cover is provided on the upper deck to cover the tops of the tanks protruding above the upper deck from above. Patent Document 1 also discloses a configuration in which a mooring mechanism is provided on the upper deck closer to the bow than the tank cover.

[0003] Japanese Patent Application Laid-Open No. 2021-187190

[0004] However, in the configuration disclosed in Patent Document 1, the mooring device is located on the upper deck on the bow side of the tank cover. The tank cover is located higher than the upper deck on the bow side where the mooring device is located. Therefore, if the tank is made larger forward, the mooring area becomes narrower. Also, if the mooring area where mooring equipment and the like are located is expanded rearward, the tank becomes smaller. Therefore, it is difficult to make the tank larger while ensuring the necessary mooring area.

[0005] The present disclosure has been made to solve the above-mentioned problem, and aims to provide a ship that can have larger tanks while ensuring the necessary mooring area.

[0006] In order to solve the above problems, the ship according to the present disclosure comprises a hull, an upper deck, a tank, a tank cover, and a bow deck. The hull has a pair of side walls. The upper deck is provided on the hull. The tank is provided within the hull. The upper part of the tank penetrates the center of the upper deck in the ship's width direction and protrudes above the upper deck. The tank cover is provided at a distance inward in the ship's width direction from the pair of side walls. The tank cover covers the multiple tanks from above and has a flat top surface extending in the bow-stern direction. The bow deck is formed so as to continue from the flat top surface toward the bow. The bow deck extends in the ship's width direction between the pair of side walls.

[0007] According to the ship of the present disclosure, the tank can be made larger while still ensuring the necessary mooring area.

[0008] Fig. 1 is a side view of a marine vessel according to an embodiment of the present disclosure; Fig. 2 is a plan view of a marine vessel according to an embodiment of the present disclosure; Fig. 3 is a cross-sectional view of a tank and a tank cover of a marine vessel according to an embodiment of the present disclosure, viewed from the bow-stern direction; Fig. 4 is a plan view showing a bow deck and a top flat surface of a tank cover according to an embodiment of the present disclosure; Fig. 5 is a plan view showing a bow deck and a top flat surface of a tank cover in a modified example of a marine vessel according to an embodiment of the present disclosure.

[0009] A ship according to an embodiment of the present disclosure will be described below with reference to Figures 1 to 5. (Configuration of Ship) As shown in Figures 1 to 3, a ship 1A exemplified in this embodiment is a liquefied gas carrier that transports liquefied gas such as LNG (Liquefied Natural Gas), LPG (Liquefied Petroleum Gas), liquefied carbon dioxide, or liquefied ammonia. The ship 1A includes at least a hull 2, a tank 10, a tank cover 20, a bow deck 30, and mooring equipment 40A. Note that the type of ship 1A is an example and is not limited to a liquefied gas carrier.

[0010] (Hull Configuration) The hull 2 ​​has a pair of side walls 3A, 3B that form its outer hull, a bottom wall 4 (see Figures 1 and 3), and an upper deck 5. The side walls 3A, 3B have a pair of side wall shell plates that form the port and starboard sides, respectively. The bottom wall 4 has a bottom wall shell plate that connects the side walls 3A, 3B. The pair of side walls 3A, 3B and the bottom wall 4 give the hull 2 ​​an outer hull U-shape in a cross section perpendicular to the bow-stern direction FA. The hull 2 ​​has an upper deck 5 on its upper part. The upper deck 5 is a deck located on the stern 2b side of the bow deck 30. In this embodiment, the upper deck 5 is an exposed deck with at least a portion exposed to the outside. The hull 2 ​​has an inner bottom 9 (see FIG. 3) that is disposed above the bottom 4 (bottom shell) and spaced apart, forming a double bottom.

[0011] A superstructure 7 is formed on the hull 2. The superstructure 7 is formed, for example, on the upper deck 5 on the stern 2b side of the hull 2, and forms an accommodation area inside.

[0012] The hull 2 ​​has a cargo carrying section 8 (in other words, a cargo hold) closer to the bow 2a than the superstructure 7. The cargo carrying section 8 illustrated in this embodiment is recessed from the upper deck 5 toward the bottom 4 of the ship in the vertical direction Dv and has an opening that opens upward.

[0013] (Tank configuration) The tank 10 is arranged in the cargo loading compartment 8. In the present embodiment, for example, four tanks 10 are arranged at intervals in the bow-stern direction FA in the cargo loading compartment 8 closer to the bow 2a than the superstructure 7. Note that only one tank 10 may be arranged.

[0014] Each tank 10 is capable of storing liquefied gas therein. As shown in Figure 3, the tank 10 of this embodiment is a rectangular tank that includes a bottom wall 12, a pair of lower inclined wall portions 13, a pair of side wall portions 14, a pair of upper inclined wall portions 15, a top wall portion 16, and a pair of end wall portions 17.

[0015] The bottom wall portion 12 is supported on the inner bottom portion 9 from below by multiple tank support members 19. The bottom wall portion 12 extends along a plane intersecting the vertical direction Dv. The bottom wall portion 12 has a rectangular plate shape when viewed in the vertical direction Dv. The pair of lower inclined wall portions 13 extend upward from both edge portions of the lower inclined wall portion 13 in the ship's width direction Dw, sloping outward in the ship's width direction Dw. The pair of side wall portions 14 extend upward from the upper ends of each of the pair of lower inclined wall portions 13. The pair of side wall portions 14 are spaced apart in the ship's width direction Dw and are provided along the ship's sides 3A, 3B with a gap between them. The pair of upper inclined wall portions 15 extend upward from the upper ends of each of the pair of side wall portions 14, sloping inward in the ship's width direction Dw. The top wall portion 16 is provided to connect the upper edges of the pair of upper inclined wall portions 15. The top wall 16 extends in the ship's width direction Dw, which is a direction intersecting the up-down direction Dv. The top wall 16 has a rectangular plate shape when viewed from above.

[0016] The tank 10 of this embodiment has a cylindrical portion 18 with a polygonal cross section extending in the fore-and-aft direction FA, which is formed by the bottom wall portion 12, a pair of lower inclined wall portions 13, a pair of side wall portions 14, a pair of upper inclined wall portions 15, and a top wall portion 16. As shown in FIGS. 1 and 2 , a pair of end wall portions 17 are provided to close the openings on both sides of the cylindrical portion 18 in the fore-and-aft direction FA. Each end wall portion 17 extends along a plane intersecting the fore-and-aft direction FA. Note that the shape, number, and layout of the tanks 10 arranged in the cargo compartment 8 of the hull 2 ​​can be changed as appropriate. The tank 10 may be, for example, a cylindrical portion with a circular cross section extending in the fore-and-aft direction FA, a spherical portion, a rectangular portion, or the like.

[0017] 1 and 3, the upper portion 10a of the tank 10 in the vertical direction Dv is located above the upper deck 5 of the hull 2. In other words, each tank 10 is provided so as to protrude above the upper deck 5. More specifically, as shown in Fig. 3, an opening 5h is formed in the center of the upper deck 5 in the width direction Dw, and the upper portion 10a of each tank 10 passes through the opening 5h formed in the center of the upper deck 5 in the width direction Dw and protrudes above the upper deck 5.

[0018] The tank cover 20 is disposed on the upper deck 5. The tank cover 20 covers the tank 10 from above in the vertical direction Dv. The tank cover 20 continuously covers multiple tanks 10 lined up in the fore-aft direction FA. As shown in Figure 3, the tank cover 20 of this embodiment covers only the upper portion 10a that protrudes above the upper deck 5 from above.

[0019] 3, the tank cover 20 is disposed at a distance in the vertical direction Dv from the upper portion 10a of the tank 10 that protrudes upward from the upper deck 5. In other words, the inner surface 20g of the tank cover 20 facing the tank 10 is disposed at a distance in the vertical direction Dv from the outer surface 10f of the upper portion 10a of the tank 10. The tank cover 20 is further disposed at a distance inward in the ship's width direction Dw from the pair of ship sides 3A, 3B.

[0020] The tank cover 20 has a pair of cover sidewalls 21A, 21B and a top flat surface 24. Each of the cover sidewalls 21A, 21B illustrated in this embodiment has an upper portion 21a and a lower portion 21b. The lower portion 21b of the cover sidewall 21A extends upward from a position a predetermined distance inward in the ship's width direction Dw relative to the ship's side 3A. The upper portion 21a of the cover sidewall 21A extends upward, sloping inward in the ship's width direction Dw. The cover sidewall 21B is formed symmetrically with the cover sidewall 21A. The lower portion 21b of the cover sidewall 21B extends upward from a position a predetermined distance inward in the ship's width direction Dw relative to the ship's side 3B on the upper deck 5. In this embodiment, the upper portion 21a of the cover sidewall 21B extends upward, sloping inward in the ship's width direction Dw.

[0021] The top flat surface 24 connects the upper ends of the pair of cover sidewalls 21A, 21B. As shown in Fig. 2, the top flat surface 24 has a rectangular shape in a top view, with its longer side extending in the fore-and-aft direction FA and its shorter side extending in the width direction Dw. The top flat surface 24 extends in the width direction Dw, which intersects with the up-and-down direction Dv. The top flat surface 24 may be flat, but may also be gradually inclined or curved downward from the center in the width direction Dw toward both outer sides in the width direction Dw, as long as it does not interfere with the installation of the mooring equipment 40A (described later) or with the walking movement of workers on the top flat surface 24.

[0022] As shown in Figures 2 and 3, the upper deck 5 has a pair of passageways 51A, 51B. The passageway 51A is exposed upward between the cover sidewall 21A and the ship's side 3A and extends in the fore-and-aft direction FA. The passageway 51B is exposed upward between the cover sidewall 21B and the ship's side 3B and extends in the fore-and-aft direction FA. Each of the passageways 51A, 51B has a width that is at least wide enough for workers (people) to move between. This allows workers to move between the passageways 51A, 51B.

[0023] 1 and 2, the passage sections 51A, 51B of this embodiment are provided with equipment 100 such as a manifold 101. The manifold 101 has connection ports to which external piping (not shown) for supplying liquefied gas from the outside of the ship 1A to the tank 10 and external piping (not shown) for discharging liquefied gas stored in the tank 10 to the outside can be detachably attached. Note that the equipment 100 provided in the passage sections 51A, 51B is not limited to the manifold 101. Equipment 100 other than the manifold 101 may also be provided in the passage sections 51A, 51B.

[0024] FIG. 4 is a plan view showing the bow deck and the top flat surface of the tank cover in this embodiment. As shown in FIGS. 1, 2, and 4, the bow deck 30 is disposed closer to the bow 2a than the tank cover 20. The bow deck 30 is formed so as to be continuous with the top flat surface 24 of the tank cover 20 in the fore-aft direction FA. The bow deck 30 is located a predetermined distance above the upper deck 5 in the up-down direction Dv. In this embodiment, the bow deck 30 and the top flat surface 24 are formed at the same height and are continuous in the fore-aft direction FA. Note that the bow deck 30 and the top flat surface 24 are not limited to being at the same height. For example, there may be a slight step in the up-down direction Dv between the bow deck 30 and the top flat surface 24, so that people can pass directly between the bow deck 30 and the top flat surface 24. Furthermore, the bow deck 30 and the top flat surface 24 may be spaced apart in the bow-stern direction FA to an extent that allows people to pass directly between the bow deck 30 and the top flat surface 24. In this case, a plate-like member (not shown) or the like may be provided between the bow deck 30 and the top flat surface 24 to make it easier for workers to pass between them.

[0025] 4, the bow deck 30 extends in the ship's width direction Dw so as to span between the pair of ship's sides 3A, 3B. The width dimension W1 in the ship's width direction Dw of the trailing edge 30t of the bow deck 30, which is located closest to the stern 2b, is larger than the width dimension W2 in the ship's width direction Dw of the leading edge 24s of the top flat surface 24 of the tank cover 20, which is located closest to the bow 2a.

[0026] 1 and 4, the upper deck 5 illustrated in this embodiment is provided closer to the stern 2b in the fore-aft direction FA than the bow deck 30. An edge 5s (see FIG. 1) on the bow 2a side of the upper deck 5 and a rear edge 30t on the stern 2b side of the bow deck 30 are connected by a vertical wall 35 extending in the up-down direction Dv. This forms a step between the upper deck 5 and the fore deck 30. For example, stairs or a ladder (not shown) may be provided at this step to allow workers to ascend and descend between the upper deck 5 and the fore deck 30.

[0027] As shown in Figure 4, the mooring equipment 40A includes a mooring device 41A and a mooring guide device 45A. The mooring device 41A is equipped with a hawser drum (not shown) that can reel in and pay out the mooring line 42. The mooring guide device 45A guides the mooring line 42 that is paid out from the hawser drum (not shown) of the mooring device 41A. Examples of the mooring guide device 45A include a deck stand roller 46A that changes the routing direction of the mooring line 42, and a closed fairlead 47A that has an insertion hole 47h through which the mooring line 42 is inserted.

[0028] At least a portion of this mooring device 40A is disposed on the bow deck 30. In this embodiment, for example, a mooring device 41A and a deck stand roller 46A are disposed on the bow deck 30. For example, the mooring device 41A is disposed in the center of the bow deck 30 in the ship's width direction Dw. The mooring rope 42, which is paid out from a hawser drum (not shown) of the mooring device 41A, is changed in its routing direction by the deck stand roller 46A so that it extends toward the ship's sides 3A and 3B on both sides in the ship's width direction Dw. The ship's sides 3A and 3B, located on both sides of the bow deck 30 in the ship's width direction Dw, protrude above the upper surface 30f of the bow deck 30. In this embodiment, the closed fairlead 47A is formed on the part of the ship's sides 3A and 3B that protrudes above the upper surface 30f of the bow deck 30. The mooring line 42 is led out of the ship (to land, etc.) through a closed fairlead 47A.

[0029] (Effects) In the ship 1A of the above embodiment, the bow deck 30 is formed to be continuous with the top flat surface 24 of the tank cover 20. This makes it possible to use the area extending from the bow deck 30 to the top flat surface 24 for various purposes. When the mooring device 40A is provided on the bow deck 30, workers who handle the mooring device 40A can work not only on the bow deck 30 but also in an area extending to the top flat surface 24, improving workability. In other words, there is no need to secure work space for handling the mooring device 40A only on the bow deck 30, increasing the flexibility in arranging the mooring device 40A on the bow deck 30. Furthermore, expansion of the bow deck 30 toward the stern 2b due to space constraints for arranging the mooring device 40A is suppressed. Therefore, the tank 10 can be enlarged while securing the required mooring area. Furthermore, there is no need to downsize the tank 10 or the tank cover 20 to increase the space for arranging the mooring device 40A. As a result, the space for arranging the mooring equipment 40A, etc. can be increased while preventing a decrease in the amount of liquefied gas carried, thereby increasing the degree of freedom in arranging the mooring equipment 40A, etc. Also, by forming the bow deck 30 so that it is continuous with the top flat surface 24 of the tank cover 20, the air resistance experienced by the tank cover 20 can be reduced, and the amount of fuel consumed when the vessel 1A is sailing can be reduced. Furthermore, it is possible to facilitate the movement of people between the top flat surface 24 and the bow deck 30, thereby reducing the burden on workers performing mooring work.

[0030] Furthermore, in the above embodiment, the upper surface 30f of the bow deck 30 and the top flat surface 24 are formed at the same height. This allows workers to easily move between the bow deck 30 and the top flat surface 24. Furthermore, if it becomes necessary to route mooring lines 42 or the like across between the bow deck 30 and the top flat surface 24, the mooring lines 42 or the like can be prevented from coming into contact with the top flat surface 24 and interfering with normal mooring operations, and the mooring lines 42 or the like can be smoothly taken in and out.

[0031] In the above embodiment, at least a portion of the mooring device 40A is disposed on the bow deck 30. This allows an operator to use not only the bow deck 30 but also the top flat surface 24 as a work space when handling the mooring device 40A, thereby improving workability.

[0032] Furthermore, in the above embodiment, passages 51A, 51B are provided between the tank cover 20 and the pair of ship sides 3A, 3B. This ensures space for workers to move in the bow-stern direction FA. Also, since equipment 100 such as the manifold 101 can be arranged in the passages 51A, 51B, it is possible to prevent the position of the equipment 100 in the vertical direction Dv from becoming excessively high, as would occur, for example, if the equipment 100 were arranged on top of the tank cover 20, thereby preventing damage to ship-shore compatibility.

[0033] 5 is a plan view showing the bow deck and the flat top surfaces of the tank cover in a modified example of the marine vessel of the present embodiment. In the above embodiment, the mooring device 41A and the deck stand roller 46A of the mooring equipment 40A are arranged on the bow deck 30, and the closed fairleads 47A are formed on the upper ends 3t of the ship sides 3A, 3B on both sides of the bow deck 30 in the ship's width direction Dw, but this is not limited to this.

[0034] As shown in a modified example of this embodiment in FIG. 5 , in a ship 1B, among the mooring equipment 40B, a mooring device 41B may be disposed on the bow deck 30, and a deck stand roller 46B and a closed fairlead 47B as mooring guide devices 45B may be disposed on the top flat surface 24 of the tank cover 20. In this case, the mooring line 42, which is paid out from a hawser drum (not shown) of the mooring device 41B, extends toward the stern 2b, and the deck stand roller 46B changes the routing direction so that it extends toward the ship's sides 3A and 3B. The closed fairleads 47B are provided at both ends of the top flat surface 24 in the ship's width direction Dw. The closed fairleads 47B are provided so as to protrude upward from both ends of the top flat surface 24. The mooring line 42 is led out of the ship (to land, etc.) through insertion holes 47g formed in the closed fairleads 47B.

[0035] In the vessel 1B according to a modification of the above embodiment, the bow deck 30 is formed so as to be continuous with the top flat surface 24 of the tank cover 20. This allows the mooring guide devices 45B, which are part of the mooring devices 40B, to be arranged on the top flat surface 24 of the tank cover 20. This increases the degree of freedom in arranging the mooring devices 40B.

[0036] (Other Embodiments) Although the embodiments of the present disclosure have been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design modifications and the like are also included within the scope of the gist of the present disclosure. For example, in the above embodiment, the upper deck 5 is provided closer to the stern 2b than the bow deck 30 in the fore-aft direction FA, but this is not limited to this. The upper deck 5 may be a full-length deck that extends from the bow 2a to the stern 2b in the fore-aft direction FA of the hull 2. In this case, the bow deck 30 is provided above the end of the upper deck 5 on the bow 2a side with a gap therebetween.

[0037] Furthermore, the cross-sectional shape of the tank cover 20 when viewed from the fore-aft direction FA is not limited to the configuration exemplified in the above embodiment. The cross-sectional shape of the tank cover 20 can be changed to another shape as appropriate as long as it has a top flat surface 24. Furthermore, the top flat surface 24 to which the bow deck 30 is connected does not necessarily have to be formed over the entire tank cover 20 in the fore-aft direction FA, and may be formed, for example, only in a portion on the bow 2a side.

[0038] Furthermore, in the above embodiment, the tank cover 20 continuously covers the multiple tanks 10, but this is not limited thereto. The tank cover 20 may be provided to cover each of the multiple tanks 10 individually. In this case, the bow deck 30 is formed to be continuous with the top flat surface 24 of the tank cover 20 located closest to the bow 2a in the fore-aft direction FA. Furthermore, while the closed fairlead 47B was described as an example in the above embodiment, the fairlead is not limited to a closed-type fairlead. Furthermore, the bow deck 30 is not limited to being formed at a constant height in the fore-aft direction FA and the transverse direction Dw. For example, like the top flat surface 24, the bow deck 30 may be gradually inclined or curved downward from the center in the transverse direction Dw toward both outer sides in the transverse direction Dw. Furthermore, the bow deck 30 may be inclined from the trailing edge 30t on the stern 2b side toward the bow 2a, or may have a slight step.

[0039] Furthermore, in the above embodiment, the mooring device 40A is described as being provided on the bow deck 30. However, the mooring device 40A is not limited to being disposed on the bow deck 30. In this case, the mooring device 40A may be disposed on a deck (not shown) lower than the bow deck 30, for example.

[0040] Furthermore, although the ships 1A and 1B are liquefied gas carriers in the above example, the ships 1A and 1B are not limited to this. The ships 1A and 1B may be other types of ships, such as chemical tankers or crude oil tankers.

[0041] <Additional Notes> The boats 1A and 1B described in the embodiments can be understood, for example, as follows.

[0042] (1) The ships 1A, 1B according to the first aspect comprise a hull 2 ​​having a pair of side walls 3A, 3B, an upper deck 5 provided on the hull 2, tanks 10 provided within the hull 2, with their upper portions 10a penetrating the center of the upper deck 5 in the ship's width direction Dw and protruding above the upper deck 5, tank covers 20 provided at intervals on the inside of the pair of side walls 3A, 3B in the ship's width direction Dw, covering the plurality of tanks 10 from above and having a top flat surface 24 extending in the fore-aft direction FA, and a bow deck 30 formed so as to connect from the top flat surface 24 to the bow 2a side and extending across the ship's width direction Dw between the pair of side walls 3A, 3B.

[0043] This allows the area extending from the bow deck 30 to the top flat surface 24 to be used for various purposes. This increases the degree of freedom in arranging the mooring devices 40A, 40B, etc. Furthermore, the bow deck 30 is prevented from expanding toward the stern 2b due to the limited space for arranging the mooring devices 40A, 40B, etc. In other words, there is no need to downsize the tank 10 or the tank cover 20 to increase the space for arranging the mooring devices 40A, 40B. As a result, the space for arranging the mooring devices 40A, 40B, etc. can be increased while preventing a decrease in the amount of liquefied gas carried, thereby increasing the degree of freedom in arranging the mooring devices 40A, 40B, etc. Furthermore, by forming the bow deck 30 so as to be continuous with the top flat surface 24 of the tank cover 20, the air resistance experienced by the tank cover 20 can be reduced, thereby reducing fuel consumption during navigation of the ships 1A, 1B.

[0044] (2) The vessels 1A and 1B according to the second aspect are the vessels 1A and 1B of (1), in which the upper surface 30f of the bow deck 30 and the top flat surface 24 are formed at the same height.

[0045] This prevents the mooring ropes 42 and the like from getting caught on the step between the bow deck 30 and the top flat surface 24. It also makes it easier for workers to move between the bow deck 30 and the top flat surface 24.

[0046] (3) The vessels 1A, 1B according to a third aspect are the vessels 1A, 1B of (1) or (2), in which at least a portion of mooring equipment 40A, 40B including mooring devices 41A, 41B capable of letting out and reeling in a mooring line 42 and mooring guide devices 45A, 45B capable of guiding the mooring line 42 let out from the mooring devices 41A, 41B is arranged on the bow deck 30. Examples of the mooring guide devices 45A, 45B include deck stand rollers 46A, 46B and closed fairleads 47A, 47B.

[0047] As a result, by arranging at least a portion of the mooring devices 40A, 40B on the bow deck 30, the mooring devices 40A, 40B can be arranged not only on the bow deck 30 but also on the top flat surface 24 of the tank cover 20. Furthermore, when handling the mooring devices 40A, 40B, not only the bow deck 30 but also the top flat surface 24 can be used as a work space, improving workability.

[0048] (4) The ships 1A, 1B according to the fourth aspect are any one of the ships 1A, 1B of (1) to (3), and the upper deck 5 is provided with passage sections 51A, 51B that are exposed upward between the tank cover 20 and the pair of ship sides 3A, 3B and extend in the bow-stern direction FA.

[0049] As a result, passages 51A, 51B are provided between the tank cover 20 and the pair of ship sides 3A, 3B, ensuring space for workers to move in the bow-stern direction FA. In addition, equipment 100 such as a manifold 101 can be arranged in the passages 51A, 51B.

[0050] According to the ship of the present disclosure, the tank can be made larger while still ensuring the necessary mooring area.

[0051] DESCRIPTION OF REFERENCE NUMERALS 1A, 1B Ship 2 Hull 2a Bow 2b Stern 3A, 3B Shipside 3t Upper end 4 Bottom 5 Upper deck 5h Opening 5s Edge 6 Bottom deck 7 Superstructure 8 Cargo carrying compartment 9 Inner bottom 10 Tank 10a Upper part 10f Outer surface 12 Bottom wall 13 Lower inclined wall 14 Side wall 15 Upper inclined wall 16 Ceiling wall 17 End wall 18 Cylindrical part 19 Tank support member 20 Tank cover 20g Inner surface 21A, 21B Cover side wall 24 Top flat surface 24s Leading edge 30 Foredeck 30f Upper surface 30t Trailing edge 35 Vertical wall 40A, 40B Mooring equipment 41A, 41B Mooring device 42 Mooring line 45A, 45B Mooring guide device 46A, 46B Deck stand roller 47A, 47B Closed fairlead 47g, 47h Insertion hole 51A, 51B Passage 100 Equipment 101 Manifold Dv Up-down direction FA Bow-stern direction Dw Ship width direction W1 Width dimension W2 Width dimension

Claims

1. A ship comprising: a hull having a pair of ship sides; an upper deck provided on the hull; a tank provided within the hull, the upper part of which penetrates the center of the upper deck in the ship's width direction and protrudes above the upper deck; a tank cover provided at a distance from the center of the ship's width direction on the inside of the pair of ship sides, covering the multiple tanks from above and having a flat top surface extending in the bow-stern direction; and a bow deck formed so as to connect to the flat top surface toward the bow side and extending in the ship's width direction between the pair of ship sides.

2. The vessel according to claim 1, wherein the upper surface of the bow deck and the top flat surface are formed at the same height.

3. A ship as claimed in claim 1 or 2, wherein at least a part of mooring equipment including a mooring device capable of paying out and reeling in a mooring line, and a mooring guide device capable of guiding the mooring line paid out from the mooring device is arranged on the bow deck.

4. A ship as described in claim 1 or 2, wherein the upper deck is exposed upward between the tank cover and the pair of shipboard sides and has a passageway extending in the bow-stern direction.

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