Ships

Abstract

To provide a ship capable of effectively making use of a storage battery while suppressing an increase in size of the ship.SOLUTION: A ship 1 comprises a storage battery 30 for storing electric power. The storage battery 30 is arranged in a rudder gear room 7. A space in the ship can be saved by suppressing installation of a newly added dedicated battery room for placing the storage battery 30 and by placing the storage battery 30 in the rudder gear room 7 which is an existing space in the ship 1. An existing ventilation mechanism (a ventilation part 33) is provided in the rudder gear room 7 since an installation place of the storage battery 30 must be ventilated. Therefore, an increase in size of the ship 1 due to increased facilities can be suppressed by placing the storage battery 30 in the rudder gear room 7 and by diverting the existing ventilation mechanism.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a marine vessel. [Background technology]

[0002] A conventional ship is described in Patent Document 1. This ship includes a cargo handling section for accommodating cargo, an engine room for accommodating a main engine, a pump room for accommodating pumps, etc. Inside the ship, various devices operate at the required timing for propulsion of the ship, driving pumps for cargo handling, etc. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-132974 A Summary of the Invention [Problem to be solved by the invention]

[0004] Here, a storage battery may be installed in the ship as described above. In this case, the storage battery can store electricity generated by the energy of a specific operation inside the ship (such as the rotation of the propeller by the main engine) and supply electricity for the operation of various devices. However, it may be difficult to arrange the battery in the limited space of the ship. On the other hand, if an independent battery room or the like is provided to arrange the storage battery, the ship will become larger in size, which is a problem.

[0005] Therefore, an object of the present invention is to provide a ship that can effectively utilize storage batteries while preventing the ship from becoming too large. [Means for solving the problem]

[0006] The marine vessel according to the present invention includes a ventilation chamber in which a ventilation mechanism is provided, and a storage battery that stores electric power, and the storage battery is disposed in the ventilation chamber.

[0007] The ship is equipped with a storage battery that stores electric power. The storage battery can store electric power generated by a predetermined power in the ship (power of the main engine that rotates the propeller). The storage battery can also supply the stored electric power at an appropriate time for the operation of various devices. Here, the storage battery is arranged in a ventilation room in which a ventilation mechanism is provided. In this way, it is possible to reduce the need to provide a new battery room dedicated to arranging the storage battery, and to arrange the storage battery in the ventilation room, which is an existing space in the ship, thereby saving space inside the ship. In addition, ventilation is required in the location where the storage battery is arranged, and an existing ventilation mechanism (ventilation by a fan) is provided in the ventilation room. Therefore, by arranging the storage battery in the steering room and reusing the existing ventilation mechanism, it is possible to prevent the ship from becoming larger due to an increase in equipment and the increase in equipment. As described above, the storage battery can be effectively used while preventing the ship from becoming larger. Note that the engine room is another example of a room in which a ventilation mechanism by a fan is provided. For this reason, the storage battery may be provided in the engine room.

[0008] The ventilation room is a steering room where a steering gear for operating the rudder is arranged, and the storage battery may be arranged in the steering room. In this case, the area where the storage battery is arranged can be ventilated using a ventilation mechanism (ventilation by a fan) that is already installed in the steering room as an existing facility.

[0009] The storage battery may be arranged on the bow side of the steering gear. The steering gear is arranged directly above the rudder provided on the stern side. Therefore, in the steering room, there is more space on the bow side than on the stern side of the steering gear. In this way, the storage battery is arranged in a place where there is more space, which improves the freedom of arrangement.

[0010] The steering room may be constructed on multiple floors, and the storage battery may be arranged on at least one of the floors. In this case, the storage battery can be arranged while effectively utilizing the vertical space of the steering room.

[0011] The storage battery may be capable of storing electric power generated by the rotation of the rotating shaft of the propeller of the propeller shaft system. The rotating shaft of the propeller is rotated by the power of the highly efficient main engine. Therefore, a part of the power of the highly efficient main engine can be recovered as electric power, and the storage battery can store the electric power.

[0012] The storage battery may be capable of supplying power to a device that rotates the rotating shaft of the propeller of the propulsion shaft system. For example, when propelling a ship at low speed in a harbor, the main engine can be stopped and the propeller can be rotated by power from the storage battery. In this way, since the main engine can be stopped, smoke generation in the harbor can be suppressed, and air pollution in the harbor can be reduced.

[0013] The storage battery may be capable of supplying power to equipment that operates during loading and unloading. For example, when the equipment that operates during loading and unloading is driven by a turbine using steam from a boiler or a motor using electricity from a generator, the boiler or generator that serves as the driving source must be enlarged even though it is only used during loading and unloading. In contrast, if the equipment that operates during loading and unloading uses electricity stored in the storage battery, the enlargement of the driving source as described above can be suppressed, and air pollution at the port can be reduced.

[0014] The ship may be a tanker. This makes it possible to prevent the tanker from becoming large, and to effectively utilize the storage battery in the tanker. Effect of the Invention

[0015] According to the present invention, a ship capable of effectively utilizing storage batteries while suppressing an increase in size can be provided. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a side view showing a marine vessel according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an enlarged view of the stern portion of the vessel of FIG. 1. [Diagram 3] FIG. 2 is a schematic diagram showing an example of the arrangement of storage batteries in a steering room. [Figure 4] FIG. 2 is a schematic diagram showing an example of the arrangement of storage batteries in a steering room. [Diagram 5] FIG. 2 is a schematic diagram showing a connection structure between electrical devices in a ship. [Figure 6] 5A to 5C are schematic diagrams showing the flow of electricity in each current conduction mode. [Figure 7] 5A to 5C are schematic diagrams showing the flow of electricity in each current conduction mode. [Figure 8] 5A to 5C are schematic diagrams showing the flow of electricity in each current conduction mode. [Figure 9] 5A to 5C are schematic diagrams showing the flow of electricity in each current conduction mode. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same or corresponding parts are designated by the same reference numerals, and duplicated description will be omitted.

[0018] Fig. 1 is a side view showing a ship according to an embodiment of the present invention. Fig. 2 is an enlarged view showing the stern part of the ship in Fig. 1. As shown in Fig. 1, the ship 1 of this embodiment is a tanker or the like having a storage section for storing cargo, and is equipped with a hull 2, a propulsion shafting system 3, and a rudder 4. In the following description, the direction toward the bow may be referred to as "fore" and the direction toward the stern may be referred to as "aft".

[0019] The hull 2 ​​has an engine room 6 on the stern side. The engine room 6 is a space for arranging equipment such as the main engine. The main engine drives the propeller of the propulsion shaft system 3. A pump room 5 is provided on the bow side of the engine room 6. The hull 2 ​​has, from top to bottom, a steering room 7, a space under the steering room 8, and a stern structure 9 on the stern side of the engine room 6. The steering room 7 is a space for arranging a steering gear for steering the rudder 4, and the like. The space under the steering room 8 is a space provided below the steering room 7. The stern structure 9 is provided below the space under the steering room 8, and is a part that constitutes a part of the propulsion shaft system 3. A cargo oil tank, a ballast tank, and the like are provided on the bow side of the pump room 5.

[0020] Next, the structure on the stern side will be described in more detail with reference to Fig. 2. As shown in Fig. 2, the space under the steering room 8 is provided so as to incline downward from the rear end portion on the stern side of the hull 2 ​​toward the bow side. Therefore, the rear end portion of the stern structure 9 is disposed closer to the bow than the rear end portion of the hull 2. The rear end portion of the stern structure 9 has a shape that protrudes toward the stern side, and the propeller 11 of the propulsion shaft system 3 is provided at the tip portion of the protruding shape.

[0021] The propulsion shafting system 3 is a mechanism that generates propulsive force for the ship 1. The propulsion shafting system 3 is provided to the stern structure 9. The propulsion shafting system 3 is disposed below the space under the steering room 8, and is disposed at a position that is at least lower than the water surface when the ship 1 is in operation. The propeller 11 includes a propeller 11 and a rotating shaft 12. The propeller 11 rotates in conjunction with the rotation of the rotating shaft 12, thereby generating a water current toward the rear. The rotating shaft 12 extends horizontally within the stern structure 9 from the propeller 11 toward the bow. A rotational force is imparted to the bow-side end of the rotating shaft 12 from the main engine 21 in the engine room 6.

[0022] The rudder 4 is a mechanism for changing the direction of the ship 1. The rudder 4 includes a rudder blade 13 and a rotating shaft 14. The rudder blade 13 is disposed in the space under the steering wheel room 8 and on the stern side of the stern structure 9, and is disposed at a position at least lower than the water surface when the ship 1 is in operation. The rudder blade 13 is also disposed in a position facing the propeller 11 on the stern side.

[0023] The rudder blade 13 extends in the vertical direction while spreading in the fore-and-aft direction. The upper end of the rudder blade 13 is connected to a rotating shaft 14. The rotating shaft 14 extends upward from the upper end of the rudder blade 13. The rotating shaft 14 penetrates the space under the steering room 8 and extends to the inside of the hull 2. The rotating shaft 14 extends to the steering room 7 and is connected to a steering gear 16 provided in the steering room 7. The steering gear 16 can change the direction by rotating the rotating shaft 14 to rotate the rudder blade 13 around the rotating shaft 14.

[0024] In addition to the main engine 21, the engine room 6 is provided with a main switchboard 22, a diesel generator 23, a shaft generator 24, and a cargo oil pump motor 26. The main switchboard 22 is a device for distributing electric power to each electrical device of the ship 1. The main switchboard 22 is supplied with electric power generated on board and distributes the electric power to appropriate devices on board. In this embodiment, it is possible to automatically or manually switch between the diesel generator 23, the shaft generator 24, and the storage battery 30 as the power supply. The diesel generator 23 is a device for generating electric power using fuel. The diesel generator 23 supplies the generated electric power to the main switchboard 22.

[0025] The shaft generator 24 is a device that converts the rotational force of the rotating shaft 12 of the propeller 11 into electric power. The shaft generator 24 is provided on the rotating shaft 12 between the propeller 11 and the main engine 21. When the main engine 21 rotates the rotating shaft 12, the shaft generator 24 generates electric power by converting a part of the rotational force into electric power. The shaft generator 24 supplies the generated electric power to the main switchboard 22. The shaft generator 24 is also supplied with electric power from the main switchboard 22. When supplied with electric power, the shaft generator 24 can also function as a motor that rotates the rotating shaft 12. The cargo oil pump motor 26 is a device that generates driving force for driving a pump 27 in the pump room 5.

[0026] Here, the ship 1 is equipped with a storage battery 30 that stores electric power generated on board. The storage battery 30 is supplied with electric power generated by the shaft generator 24 and the diesel generator 23 via the main switchboard 22, and stores the electric power. The storage battery 30 supplies electric power to necessary devices on board via the main switchboard 22 by discharging the electric power at a timing when electric power is needed on board. A charging / discharging panel 31 that manages the charging and discharging of the storage battery 30 is provided between the storage battery 30 and the main switchboard 22.

[0027] In this embodiment, the storage battery 30 is disposed in the steering room 7. The charging / discharging panel 31 is also disposed in the steering room 7. The steering room 7 is provided with a ventilation section 33 with the outside. The ventilation section 33 is constituted by a ventilator provided on the ceiling of the steering room 7, i.e., on the deck. The ventilation section 33 is provided with a mechanism for exhausting air from inside the steering room 7, such as a fan. The steering room 7 is also provided with an opening for intake. This allows the ventilation section 33 to ventilate the inside of the steering room 7 with outside air. The ventilation section 33 can function as a facility for ventilating the installation space of the steering gear 16, and at the same time, can also function as a facility for ventilating the installation space of the storage battery 30.

[0028] Next, referring to FIG. 3, a specific example of the arrangement of the storage battery 30 in the steering room 7 will be described. FIG. 3(a) is a schematic diagram showing the state inside the steering room 7 as viewed from above. FIG. 3(b) is a schematic diagram showing the state inside the steering room 7 as viewed from the starboard side. As shown in FIG. 3(a), the steering room 7 includes a front wall 7a on the bow side, a rear wall 7b on the stern side, a side wall 7c on the starboard side, a side wall 7d on the port side, a floor 7e, and a ceiling 7f (see FIG. 3(b)). The front wall 7a also functions as a bulkhead to the engine room 6. The floor 7e also functions as a bulkhead to the space 8 below the steering room. The ceiling 7f also functions as a deck. The steering room 7 is configured such that the width in the left and right directions becomes wider as it approaches the bow side. Therefore, the width dimension in the left and right directions of the front wall 7a is larger than that of the rear wall 7b. The left and right side walls 7c, 7d are shaped to widen in the width direction from the rear wall 7b to the front wall 7a.

[0029] The steering gear 16 is an equipment arranged directly above the rudder 4. Therefore, the steering gear 16 is arranged on the stern side of the steering room 7. In this way, since the steering gear 16, which occupies a large space, is arranged in a position closer to the stern side, the bow side of the steering room 7 has more space in the fore-and-aft direction. Furthermore, since the bow side of the steering room 7 is wider from side to side, there is even more space. Therefore, the storage battery 30 and the charging / discharging panel 31 are arranged on the bow side of the steering gear 16. Here, the storage battery 30 and the charging / discharging panel 31 are arranged in the space between the front wall 7a and the steering gear 16 in the fore-and-aft direction. Moreover, the storage battery 30 has a long and thin shape in the left and right directions and is arranged in the space. The charging / discharging panel 31 is arranged in a position adjacent to the storage battery 30 in the left-and-right direction. The electric wires of the current-carrying line L1 connected to the storage battery 30 and the charging / discharging panel 31 are routed to the main distribution board 22 of the engine room 6 via the front wall 7a. Since the storage battery 30 and the charging / discharging panel 31 are arranged on the bow side, the length of the electric wire of the current carrying line L1 inside the steering room 7 can be shortened.

[0030] As shown in Fig. 3(b), the steering gear 16, the storage battery 30, and the charging / discharging panel 31 are installed on the floor 7e. The space in which the steering gear 16, the storage battery 30, and the charging / discharging panel 31 are arranged continues to the ceiling 7f. Therefore, the air around the steering gear 16, the storage battery 30, and the charging / discharging panel 31 is ventilated through the ventilation section 33.

[0031] Also, an arrangement as shown in FIG. 4 may be adopted. In the example shown in FIG. 4, the steering room 7 is configured on multiple floors (here, the second floor). Such a configuration can be adopted when the ceiling 7f of the steering room 7 is high. FIG. 4(a) is a schematic diagram showing the state of the first floor part of the steering room 7 as viewed from above. FIG. 4(b) is a schematic diagram showing the state of the second floor part of the steering room 7 as viewed from above. FIG. 4(c) is a schematic diagram showing the state inside the steering room 7 as viewed from the starboard side. As shown in FIG. 4(c), the steering room 7 is configured as a two-story space by dividing the space between the floor 7e and the ceiling 7f by the second floor floor 7g. The second floor floor 7g constitutes the floor part of the second floor part and also constitutes the ceiling part of the first floor part.

[0032] As shown in FIG. 4(a), the steering gear 16, the charging / discharging panel 31, and the storage battery 30 are arranged on the first floor of the steering room 7. The position and shape of the steering gear 16 and the charging / discharging panel 31 are the same as those shown in FIG. 3. Meanwhile, the storage battery 30 is divided into a plurality of units and arranged. On the first floor, a pair of storage battery 30 units are arranged on the bow side of the steering room 7, near the left and right side walls 7c, 7d. As shown in FIG. 4(b), on the second floor, a plurality of storage batteries 30 are arranged in a line across the entire area. On the second floor, the storage battery 30 units are arranged in a row on the stern side and a row on the bow side. The row on the bow side has a larger number of storage battery 30 units than the row on the stern side. The arrangement of the storage battery 30 on each floor is not limited to that shown in FIG. 4. Furthermore, the storage battery 30 unit only needs to be arranged on at least one of the floors, and for example, the storage battery 30 unit may be arranged only on the second floor.

[0033] A duct 36 is provided from the ventilation section 33, which extends into the space of the steering room 7. The duct 36 has an opening 36a that extends downward and opens into the space on the first floor, and an opening 36b that branches off and opens into the space on the second floor. As a result, the space on the first floor is ventilated through the opening 36a, and the space on the second floor is ventilated through the opening 36b.

[0034] Next, an example of the electricity distribution mode by the main switchboard 22 for utilizing the storage battery 30 will be described with reference to Figs. 5 to 9. Fig. 5 is a schematic diagram showing a connection structure between each electrical device in the ship 1. Figs. 6 to 9 are schematic diagrams showing the flow of electricity in each current supply mode. As shown in Fig. 5, the storage battery 30 and the charging / discharging panel 31 are connected to the main switchboard 22 via a current supply line L1. The diesel generator 23 is connected to the main switchboard 22 via a current supply line L2. The shaft generator 24 is connected to the main switchboard 22 via a current supply line L3. The cargo oil pump motor 26 is connected to the main switchboard 22 via a current supply line L4. The other devices 29 of the ship 1 are connected to the main switchboard 22 via a current supply line L5. In Figs. 6 to 9, among the current supply lines, the current supply lines through which electricity flows are indicated by solid lines, and the current supply lines through which electricity does not flow are indicated by dashed lines.

[0035] 6 is a schematic diagram showing the flow of electricity in a current-carrying mode during sailing. During sailing, the main engine 21 rotates the propeller 11 via the rotating shaft 12 to propel the ship 1. At this time, the shaft generator 24 converts the rotational force of the rotating shaft 12 into electric power to generate electricity. The shaft generator 24 supplies electric power to the main switchboard 22 via the current carrying line L3. The main switchboard 22 supplies electric power to other devices 29 via the current carrying line L5. The main switchboard 22 also supplies electric power to the storage battery 30 via the current carrying line L1. As a result, the storage battery 30 stores the electric power generated by the shaft generator 24.

[0036] FIG. 7 is a schematic diagram showing the flow of electricity in the energized mode during loading and unloading. During loading and unloading, the ship is stopped at the port, so the main engine 21 is stopped. The storage battery 30 discharges electricity to supply power to the main switchboard 22 via the energized line L1. The main switchboard 22 supplies power to the cargo oil pump motor 26 via the energized line L4. This causes the cargo oil pump 27 to operate, and loading and unloading work is performed. The main switchboard 22 supplies power to other equipment 29 via the energized line L5. At this time, the shaft generator 24 and the diesel generator 23 stop generating power. Therefore, the use of boilers and generators at the port is refrained, and the smoke generated at the port can be reduced.

[0037] FIG. 8 is a schematic diagram showing the flow of electricity in the energization mode during low-speed navigation in a port. In a port, it is preferable to refrain from using the main engine 21 and the generator from the viewpoint of reducing air pollution, so the main engine 21 and the diesel generator 23 are stopped. Therefore, the ship 1 is propelled at a low speed by using the power of the storage battery 30. Specifically, the storage battery 30 supplies power to the main switchboard 22 via the energization line L1 by discharging. The main switchboard 22 supplies power to the shaft generator 24 via the energization line L3. As a result, the shaft generator 24 operates as a motor and applies a rotational force to the rotating shaft 12. Therefore, the propeller 11 rotates at a low speed within the range possible with the power of the storage battery 30. The main switchboard 22 supplies power to other equipment 29 via the energization line L5. As described above, the main engine 21 and the diesel generator 23 are stopped. Therefore, the use of the boiler and the generator in the port is refrained, and the smoke generated in the port can be reduced.

[0038] Fig. 9 is a schematic diagram showing the flow of electricity in the energized mode when the shaft generator 24 fails or the capacity of the storage battery 30 decreases. At this time, as shown in Fig. 8, the shaft generator 24 cannot generate power. Therefore, the diesel generator 23 generates power and supplies the power to the main switchboard 22 via the current line L2. The main switchboard 22 supplies the power to other equipment 29 via the current line L5.

[0039] Next, the actions and effects of the marine vessel 1 according to this embodiment will be described.

[0040] The ship 1 includes a storage battery 30 that stores electric power. The storage battery 30 can store electric power generated by a predetermined power source in the ship 1, for example, the highly efficient power source of the main engine 21 that rotates the propeller 11. The storage battery 30 can supply the stored electric power at an appropriate timing for the operation of various devices. Here, the storage battery 30 is arranged in the steering room 7 (ventilation room). In this way, it is possible to reduce space inside the ship by suppressing the need to provide a new dedicated battery room for arranging the storage battery 30 and arranging the storage battery 30 in the steering room 7, which is an existing space in the ship 1. In addition, ventilation is required in the location where the storage battery 30 is arranged, and an existing ventilation mechanism (ventilation section 33 that can ventilate by a fan) is provided in the steering room 7. Therefore, by arranging the storage battery 30 in the steering room 7 and utilizing the existing ventilation mechanism, it is possible to suppress the increase in size of the ship 1 and the increase in equipment due to the increase in facilities. As described above, the storage battery 30 can be effectively used while suppressing the increase in size.

[0041] The storage battery 30 may be arranged on the bow side of the steering gear 16. The steering gear 16 is arranged directly above the rudder 4 provided on the stern side. Therefore, in the steering room 7, there is more space on the bow side than on the stern side of the steering gear 16. In this way, the storage battery 30 is arranged in a place with more space, which improves the freedom of arrangement.

[0042] The steering room 7 may be constructed on multiple floors, and the storage battery 30 may be arranged on at least one of the floors. In this case, the storage battery 30 can be arranged by effectively utilizing the vertical space of the steering room 7.

[0043] The storage battery 30 may be capable of storing electric power generated by the rotation of the rotating shaft 12 of the propeller 11 of the propulsion shafting 3. The rotating shaft 12 of the propeller 11 rotates by the power of the highly efficient main engine 21. Therefore, the shaft generator 24 can convert part of the power of the highly efficient main engine 21 into electric power and recover it, and the storage battery 30 can store the electric power.

[0044] The storage battery 30 may be capable of supplying power to a device (shaft generator 24) that rotates the rotating shaft 12 of the propeller 11 of the propulsion shaft system 3. For example, when the ship 1 is propelled at a low speed in a harbor, the main engine 21 can be stopped and the propeller 11 can be rotated by the power of the storage battery 30. Since the main engine 21 can be stopped in this way, generation of smoke in the harbor or the like can be suppressed, and air pollution in the harbor can be reduced.

[0045] The storage battery 30 may be capable of supplying power to equipment (cargo oil pump 27) that operates during loading and unloading. For example, if the cargo oil pump 27 that operates during loading and unloading is driven by a turbine using steam from a boiler or a motor using electricity from a generator, it becomes necessary to enlarge the boiler or generator that serves as the driving source, even though they are only used during loading and unloading. In contrast, if the cargo oil pump 27 that operates during loading and unloading uses electricity stored in the storage battery 30, it is possible to prevent the driving source from being enlarged as described above. In addition, it is possible to prevent smoke from being generated in ports and the like, thereby reducing air pollution in ports and the like.

[0046] The ship 1 may be a tanker. This makes it possible to prevent the tanker from becoming large, and to effectively utilize the storage batteries in the tanker.

[0047] The present invention is not limited to the above-described embodiments.

[0048] For example, the arrangement of the storage battery 30 in the steering room 7 shown in Figures 3 and 4 is merely one example, and may be changed as appropriate without departing from the spirit of the present invention.

[0049] Furthermore, the configurations and current supply modes of the electrical system of the boat 1 shown in Figs. 5 to 9 are merely examples, and may be modified as appropriate without departing from the spirit of the present invention.

[0050] In addition, in the above embodiment, the ship is a tanker, which is particularly suitable, but the present invention can also be applied to dual-purpose ships that can carry not only oil but also solid cargo (bulk) such as ore and coal, and the like.

[0051] In the above embodiment, the steering room is exemplified as the ventilation room. However, the ventilation room may be any room that is equipped with at least a fan function. Such a ventilation room may be, in addition to the steering room, an engine room equipped with a ventilation mechanism such as a fan. Therefore, a storage battery may be provided in the engine room. [Explanation of symbols]

[0052] 1...ship (tanker), 3...propulsion shafting system, 4...rudder, 7...steering room (ventilation room), 11...propeller, 12...rotating shaft, 16...steering gear, 30...storage battery.

Claims

1. a ventilation room in which a ventilation mechanism is provided; A storage battery that stores power, The storage battery is disposed in the ventilation chamber, The storage battery stores electric power generated by a predetermined power source in the ship, The ship has a mode in which the main engine is stopped and the electric power stored in the storage battery is supplied to a supply unit.

2. The ventilation room is a steering room in which a steering gear for operating a rudder is arranged, The vessel according to claim 1 , wherein the storage battery is disposed in the steering room.

3. The vessel according to claim 2 , wherein the storage battery is disposed closer to a bow than the steering gear.

4. The ship according to claim 2 or 3, wherein the steering room is configured on multiple floors, and the storage battery is arranged on at least one of the floors.

5. The ship according to any one of claims 1 to 4, wherein the storage battery is capable of storing electric power generated by rotation of a rotating shaft of a propeller of a propulsion shaft system.

6. The ship according to any one of claims 1 to 5, wherein the storage battery, as the supply unit, is capable of supplying electric power to a device that rotates a rotating shaft of a propeller of a propulsion shaft system.

7. The ship according to any one of claims 1 to 5, wherein the storage battery, as the supply unit, is capable of supplying power to equipment that operates during loading and unloading.

8. The vessel according to any one of claims 1 to 7, wherein the vessel is a tanker.

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