Ships

Abstract

This minimizes the reduction in the vehicle loading compartment size and prevents a decrease in the number of vehicles that can be loaded. [Solution] The ship comprises a hull having a pair of sides, multiple decks arranged vertically apart within the hull to form a vehicle loading compartment, and an exhaust system for exhausting air from the vehicle loading compartment to the outside of the hull. The exhaust system comprises an exhaust fan, which is provided in the corner between the upper deck and the side of two adjacent vertically adjacent decks, and has a fan body that rotates around an axis inclined with respect to the width direction and the vertical direction, and exhausts air from the vehicle loading compartment; and an exhaust duct that defines a discharge path for discharging the air exhausted by the exhaust fan to the outside of the hull.

Description

Technical Field

[0004]

[0001] This disclosure relates to a ship.

Background Art

[0002] Patent Document 1 discloses a ship including a ventilation duct provided to extend vertically from the upper deck toward a plurality of vehicle decks.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the configuration as described in Patent Document 1, there may be a case where the ventilation duct and an exhaust fan provided in the ventilation duct protrude from the side of the hull toward the inner side in the ship width direction. For this reason, the vehicle loading section on the vehicle deck may become small, and the number of vehicles that can be loaded may decrease.

[0005] This disclosure has been made to solve the above problems, and an object thereof is to provide a ship capable of suppressing a reduction in the vehicle loading section and suppressing a decrease in the number of vehicles that can be loaded.

Means for Solving the Problems

[0006] To solve the above problems, the vessel according to this disclosure comprises a hull, a deck, and an exhaust system. The hull has a pair of sides. Multiple decks are arranged within the hull at vertical intervals to form a vehicle loading compartment. The exhaust system exhausts air from the vehicle loading compartment to the outside of the hull. The exhaust system comprises an exhaust fan and an exhaust duct. The exhaust fan is located in the corner between the upper deck, which is located on the upper side of two vertically adjacent decks, and the side. The exhaust fan has a fan body that rotates around an axis inclined with respect to the width direction and the vertical direction. The fan exhausts air from the vehicle loading compartment. The exhaust duct defines a discharge passage for discharging the air exhausted by the exhaust fan to the outside of the hull. [Effects of the Invention]

[0007] According to the vessel described herein, it is possible to minimize the reduction in the vehicle loading compartment and minimize the decrease in the number of vehicles that can be loaded. [Brief explanation of the drawing]

[0008] [Figure 1] This is a side view of a vessel according to an embodiment of the present disclosure. [Figure 2] This is a plan cross-sectional view showing an example of the arrangement of an exhaust system in a vessel according to the embodiment of this disclosure. [Figure 3] This is a cross-sectional view of the exhaust system configuration according to the embodiment of this disclosure, as seen from the bow-stern direction. [Figure 4] This is a cross-sectional view of the exhaust system configuration according to a modified embodiment of the present disclosure, as seen from the bow-stern direction. [Modes for carrying out the invention]

[0009] Hereinafter, a vessel according to the embodiment of this disclosure will be described with reference to Figures 1 to 4. (Ship composition) As shown in Figure 1, the vessel 1 of this embodiment mainly comprises a hull 2 ​​and an exhaust system 10A. The type of vessel 1 is not limited to any particular type as long as it is capable of carrying vehicles. Examples of vessel types for vessel 1 include ferries, RORO ships (Roll-on / Roll-off ships), PCTCs (Pure Car & Truck Carriers), etc.

[0010] (Hull structure) The hull 2 ​​has a pair of side panels 3A and 3B that form its outer shell, a bottom 4, and an upper deck 5. The side panels 3A and 3B each have a pair of side platings that form the port and starboard sides, respectively. The bottom 4 has bottom platings that connect these side panels 3A and 3B. The upper deck 5 illustrated in this embodiment is a full-length deck that is exposed to the outside. A superstructure 7 containing living quarters is formed on the hull 2. Note that the arrangement and shape of structures on the upper deck 5, such as the superstructure 7 shown in Figure 1, are examples only.

[0011] Figure 2 is a plan cross-sectional view showing an example of the arrangement of an exhaust system in a vessel according to the present disclosure. As shown in Figure 2, each of the pair of hull sides 3A and 3B (only hull side 3A is shown in Figure 2) is provided with a steel member 6 extending in the vertical direction Dv along the inner surface 3f facing inward in the width direction W. Multiple steel members 6 are provided at predetermined intervals in the bow-stern direction FA. The steel members 6 are reinforcing members (framework) that reinforce the hull side plating of hull sides 3A and 3B.

[0012] As shown in Figure 1, the hull 2 ​​has multiple decks 9 arranged inside, spaced apart in the vertical direction Dv. At least a portion of these multiple decks 9 are designated as vehicle decks on which vehicles can be loaded. Within the hull 2, the space on each of the vehicle decks 9 is designated as a vehicle loading compartment Sc on which vehicles can be loaded.

[0013] (Exhaust system configuration) The exhaust system 10A exhausts from the vehicle loading compartment Sc to the outside of the hull 2. The exhaust system 10A is located within the hull 2, along either side 3A or 3B. Since side 3A and side 3B have basically the same configuration, only side 3A will be described in the following explanation, and the explanation for side 3B will be omitted.

[0014] As shown in Figure 2, in this embodiment, the exhaust device 10A is located along the side 3A of the hull. In this embodiment, the exhaust device 10A is located between adjacent steel members 6 in the bow-stern direction FA.

[0015] Figure 3 is a cross-sectional view of the exhaust system configuration according to the present disclosure, as seen from the bow-stern direction. As shown in Figure 3, the exhaust system 10A includes an exhaust duct 11 and an exhaust fan 20. The exhaust duct 11 defines a discharge passage R through which the air exhausted by the exhaust fan 20 is discharged to the outside of the hull 2. The exhaust duct 11 comprises a lower duct 12 and an upper duct 13.

[0016] The lower duct 12 is located below the upper deck 9A, which is positioned above the adjacent deck 9 in the vertical direction Dv. The lower duct 12 is located in the corner between the upper deck 9A and the side 3A. The lower duct 12 has side plates 121, a bottom plate 122, an inclined plate 123, and a pair of end plates 124.

[0017] The side plate 121 is provided at a position separated inward in the ship width direction W from the ship side 3A. The side plate 121 is provided in parallel with the ship side 3A and extends downward from the upper deck 9A. The bottom plate 122 is provided at a position separated downward in the vertical direction Dv from the upper deck 9A. The bottom plate 122 is provided below the lower end of the side plate 121 in the vertical direction Dv. The bottom plate 122 is provided in parallel with the upper deck 9A and extends inward in the ship width direction W from the ship side 3A. The inclined plate 123 connects the lower end of the side plate 121 and the end portion on the inner side in the ship width direction W of the bottom plate 122. The inclined plate 123 is inclined with respect to both the vertical direction Dv and the ship width direction W when viewed from the ship head and tail direction FA. The pair of end plates 124 are provided separated in the ship head and tail direction FA. Each of the pair of end plates 124 closes off the space surrounded by the upper deck 9A, the side plate 121, the inclined plate 123, the bottom plate 122, and the ship side 3A from the ship head and tail direction FA. The inclined plate 123 is formed with a suction hole 123h penetrating the inclined plate 123.

[0018] Here, on the upper deck 9A, when viewed from the vertical direction Dv, a through hole 9h is formed in a portion surrounded by the side plate 121 of the lower duct 12, the pair of end plates 124, and the ship side 3A. The through hole 9h penetrates the upper deck 9A in the vertical direction Dv. A grating (not shown) having a plurality of openings is provided in this through hole 9h. By providing the grating in the through hole 9h, when an operator enters the upper duct 13 described later, the operator can stand on the grating.

[0019] The upper duct 13 is provided above the upper deck 9A. The upper duct 13 of this embodiment rises upward from the upper deck 9A around the through hole 9h. The upper duct 13 has a side plate 131, a top plate 132, and a pair of end plates 133.

[0020] The side plate 131 is provided at a position separated inward in the ship width direction W with respect to the ship's side 3A. The side plate 131 is provided parallel to the ship's side 3A and extends upward from the upper deck 9A. The top plate 132 is provided at a position separated upward in the vertical direction Dv with respect to the upper deck 9A. The top plate 132 is provided parallel to the upper deck 9A, extends inward in the ship width direction W from the ship's side 3A, and is connected to the upper end of the side plate 131. The pair of end plates 133 are provided at a distance in the fore-and-aft direction FA of the ship. Each of the pair of end plates 133 closes off the space surrounded by the upper deck 9A, the side plate 131, the top plate 132, and the ship's side 3A from the fore-and-aft direction FA of the ship.

[0021] Here, in the ship's side 3A described above, when viewed from the ship width direction W, a ventilation hole 3h is formed in a portion surrounded by the top plate 132, the pair of end plates 133, and the upper deck 9A. The ventilation hole 3h penetrates the ship's side 3A in the ship width direction W. A louver 14 is provided in the ventilation hole 3h.

[0022] Inside the upper duct 13, a cylindrical coaming 15 extending inward in the ship width direction W from the periphery of the ventilation hole 3h is provided. An exhaust port 15h facing the outside of the hull 2 from the ventilation hole 3h is formed at the outer end of the coaming 15 in the ship width direction W. A lid 19A is provided at the inner end of the coaming 15 in the ship width direction W. The lid 19A is provided so as to be able to open and close the opening at the inner end of the coaming 15 in the ship width direction W. By opening and closing the opening at the inner end of the coaming 15 in the ship width direction W, the lid 19A of the present embodiment can substantially open and close the ventilation hole 3h. The lid 19A of the present embodiment is capable of swinging around an axis extending in the fore-and-aft direction FA along the upper edge on the inner side of the coaming 15 in the ship width direction W.

[0023] An openable and closable maintenance hatch 18A is provided on the side plate 131. The maintenance hatch 18A is provided above the upper deck 9A. By opening the maintenance hatch 18A, an operator can enter and exit the upper duct 13 from above the upper deck 9A for operations such as opening and closing the lid 19A and maintenance.

[0024] The exhaust fan 20 is located in the corner between the upper deck 9A and the sides 3A and 3B. The exhaust fan 20 is mounted on the inclined plate 123 of the lower duct 12. In other words, the lower duct 12 is connected to the exhaust fan 20.

[0025] The exhaust fan 20 is, for example, an axial flow fan and comprises a cylindrical body 21 and a fan body 22. The cylindrical body 21 is connected to the inclined plate 123 of the lower duct 12. The cylindrical body 21 extends diagonally downward from the lower duct 12 along the axis C toward the inside in the ship width direction W. Here, it is preferable that the diameter of the cylindrical body 21 is less than or equal to the length of the cylindrical body 21 in the direction along the axis C. This suppresses the amount of inward protrusion of the exhaust fan 20 toward the ship width direction W.

[0026] The fan body 22 is housed inside the cylindrical body 21. The configuration of the fan body 22 is not limited in any way and may be any configuration. The fan body 22 is rotationally driven around axis C by a drive source such as a motor (not shown). Here, axis C is inclined with respect to the ship's width direction W (e.g., horizontal direction) and the vertical direction Dv (e.g., vertical direction). Note that axis C may extend diagonally downward toward the inside of the ship's width direction W and may also be inclined toward the bow or stern, which are the ship's bow-stern directions FA.

[0027] In this exhaust system 10A, when the fan body 22 of the exhaust fan 20 is rotated around axis C, air from the vehicle loading compartment Sc between the upper deck 9A and the lower deck 9B located directly below the upper deck 9A is drawn into the lower duct 12 through the cylindrical body 21 and intake holes 123h. The air drawn into the lower duct 12 flows into the upper duct 13 through the through holes 9h. The air that flows into the upper duct 13 passes through the coaming 15 and is exhausted to the outside of the hull 2 ​​through the exhaust port 15h, louvers 14, and ventilation holes 3h. In this way, the exhaust duct 11, which includes the lower duct 12 and the upper duct 13, defines a discharge path R for discharging the air exhausted by the exhaust fan 20 to the outside of the hull 2.

[0028] The exhaust system 10A is further equipped with a drain receiver 31. The drain receiver 31 is located vertically below the lowest part 21d of the cylindrical body 21. When the exhaust fan 20 is stopped, if rainwater or seawater that has entered the exhaust duct 11 from outside the ship through the vent holes 3h and louvers 14 adheres to the inner surface of the cylindrical body 21, the attached rainwater or seawater flows downward along the inner surface of the cylindrical body 21 and falls from the lowest part 21d of the cylindrical body 21. The drain receiver 31 receives the rainwater or seawater falling from the lowest part 21d of the cylindrical body 21. A drain pipe 32 is connected to the drain receiver 31. The rainwater or seawater received by the drain receiver 31 is discharged through the drain pipe 32 onto the lower deck 9B.

[0029] Furthermore, the hull 2 ​​is equipped with an air supply device (not shown) that supplies air to the vehicle loading compartment Sc from outside the hull 2. The air supply device supplies air from outside the hull as the pressure inside the vehicle loading compartment Sc decreases due to the operation of the exhaust fan 20 of the exhaust device 10A. The air supply device is equipped with an air supply duct having an air supply passage that supplies the air supplied from outside the hull 2 ​​into the vehicle loading compartment Sc. The air supply device may also be equipped with an air supply fan. The air supply device is installed at a position different from the exhaust device 10A in at least one of the bow-stern direction FA and the width direction W.

[0030] (Effects and Benefits) In the above embodiment of the ship 1, the exhaust fan 20 of the exhaust device 10A is located in the corner between the upper deck 9A and the side 3A, so it is less likely to interfere with vehicles mounted on the deck 9. Furthermore, since the fan body 22 of the exhaust fan 20 rotates around an axis C that is inclined with respect to the ship width direction W and the vertical direction Dv, it is possible to directly draw air from the center of the vehicle loading compartment Sc into the exhaust duct 11 when viewed from the bow-stern direction FA, thereby suppressing the need to enlarge the exhaust duct 11. As a result, the reduction in the vehicle loading compartment Sc can be minimized, and the decrease in the number of vehicles that can be loaded can be kept to a minimum.

[0031] Furthermore, in the above embodiment, the exhaust duct 11 comprises a lower duct 12 and an upper duct 13. As a result, the exhaust gas drawn out from the vehicle loading compartment Sc by the exhaust fan 20 connected to the lower duct 12 of the exhaust duct 11 passes through a through hole 9h formed in the upper deck 9A and is discharged to the outside of the hull 2 ​​through the exhaust port 15h and ventilation hole 3h of the upper duct 13. Since the exhaust duct 11 has a lower duct 12 located below the upper deck 9A and an upper duct 13 located above the upper deck 9A, it is possible to prevent the lower duct 12 from becoming too large in the vehicle loading compartment Sc below the upper deck 9A. This prevents the vehicle loading compartment Sc below the upper deck 9A from becoming too small.

[0032] Furthermore, in the above embodiment, the exhaust fan 20 includes a cylindrical body 21 that extends diagonally downward from the lower duct 12 along the axis C toward the inside in the ship width direction W, and the fan body 22 is provided inside the cylindrical body 21. As a result, the rotation of the fan body 22 of the exhaust fan 20 allows exhaust from the vehicle mounting compartment Sc to be efficiently guided through the cylindrical body 21 to the exhaust duct 11. In addition, the flow path within the exhaust duct 11 from the inlet of the exhaust fan 20 to the exhaust port 15h can be made straight with fewer bends, thereby improving the ventilation performance of the exhaust device 10A.

[0033] Furthermore, in the above embodiment, the exhaust device 10A has a drain receiver 31. This prevents rainwater or seawater that enters the exhaust duct 11 from outside the ship through the ventilation holes 3h and louvers 14 when the exhaust fan 20 is stopped from falling into the vehicle loading compartment Sc.

[0034] Furthermore, in the above embodiment, since the upper duct 13 is equipped with a maintenance hatch 18A, workers can enter the upper duct 13 as needed to easily open and close the cover 19A and perform maintenance and other tasks.

[0035] Furthermore, in the above embodiment, the exhaust device 10A is equipped with a cover 19A that can open and close the ventilation hole 3h, so in the event of a fire, the ventilation hole 3h can be closed with the cover 19A.

[0036] Furthermore, in the above embodiment, the exhaust device 10A is positioned between steel members 6 provided along the inner surface 3f of the side 3A facing inward in the ship width direction W, thereby preventing the exhaust device 10A from protruding into the vehicle loading compartment Sc. This prevents the vehicle loading compartment Sc from becoming smaller. In addition, the exhaust device 10A can be positioned with a high degree of freedom between the steel members 6 in the bow-stern direction FA, avoiding pipes and electrical circuits running in the vertical direction Dv.

[0037] (Modified examples of the embodiment) In the above embodiment, the pair of end plates 133 of the upper duct 13 are connected to the side 3A, and the side 3A defines a part of the discharge passage R inside the upper duct 13, but the embodiment is not limited to this. Figure 4 is a cross-sectional view of an exhaust system according to a modified embodiment of the present disclosure, as seen from the bow-stern direction. As shown in Figure 4, in this modified embodiment, the upper duct 13 of the exhaust device 10B includes a side plate 135 positioned between the side plate 131 and the hull side 3A. The side plate 135 is positioned away from the hull side 3A in the width direction W. The side plate 135 is provided parallel to the hull side 3A and the side plate 131, and closes the space between the lower surface of the coaming 15, the upper deck 9A, and the pair of end plates 133.

[0038] Furthermore, a cover 19B is provided inside the upper duct 13. The cover 19B is provided so as to be able to open and close the discharge passage R inside the upper duct 13, which is surrounded by the side plate 131, a pair of end plates 133, and the side plate 135. In a modified version of this embodiment, a maintenance hatch 18B is formed on the upper part of the side plate 131, and by opening the maintenance hatch 18B, the cover 19B can be opened and closed from outside the upper duct 13 (inside the vehicle mounting compartment Sc).

[0039] (Other embodiments) Although embodiments of this disclosure have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments and may include design changes and the like that do not depart from the gist of this disclosure. For example, in the above embodiment, the exhaust devices 10A and 10B are arranged between adjacent steel members 6 in the bow-stern direction FA, but at least one of the pair of end plates 133 may be formed from the steel member 6. Furthermore, the exhaust devices 10A and 10B may be installed in positions along the side 3B of the ship. Furthermore, the arrangement and number of exhaust devices 10A and 10B and supply air devices (not shown) may be any arrangement.

[0040] <Note> The vessel 1 described in the embodiment can be understood, for example, as follows:

[0041] (1) The vessel 1 according to the first embodiment comprises a hull 2 ​​having a pair of sides 3A, 3B, a deck 9 which is arranged in a plurality within the hull 2 ​​at intervals in the vertical direction Dv to form a vehicle loading compartment Sc, and exhaust devices 10A, 10B which exhaust air from the vehicle loading compartment Sc to the outside of the hull 2, wherein the exhaust devices 10A, 10B are provided in the corner between the upper deck 9A and the side 3A of the adjacent decks 9 in the vertical direction Dv, and have a fan body 22 which rotates about an axis C that is inclined with respect to the width direction W and the vertical direction Dv, and exhaust fan 20 which exhausts air from the vehicle loading compartment Sc, and exhaust duct 11 which defines a discharge passage R for discharging the air exhausted by the exhaust fan 20 to the outside of the hull 2.

[0042] In this vessel 1, the exhaust fans 20 of the exhaust systems 10A and 10B are located in the corner between the upper deck 9A and the side 3A, so they are less likely to interfere with vehicles mounted on deck 9. Furthermore, since the fan body 22 of the exhaust fan 20 rotates around an axis C that is inclined with respect to the ship's width direction W and vertical direction Dv, it is possible to directly draw air from the center of the vehicle loading compartment Sc into the exhaust duct 11 when viewed from the bow-stern direction FA, thereby reducing the size of the exhaust duct 11. As a result, the reduction in the vehicle loading compartment Sc can be minimized, and the decrease in the number of vehicles that can be loaded can be kept to a minimum.

[0043] (2) The vessel 1 according to the second embodiment is the vessel 1 of (1), wherein the hull 2 ​​has a ventilation hole 3h formed to penetrate the side 3A in the width direction W and a through hole 9h that penetrates the upper deck 9A in the vertical direction Dv, and the exhaust duct 11 comprises a lower duct 12 provided below the upper deck 9A and connected to the exhaust fan 20, and an upper duct 13 provided above the through hole 9h and connected to the lower duct 12, and having an exhaust port 15h that faces the outside of the hull 2 ​​from the ventilation hole 3h.

[0044] As a result, exhaust gas drawn out from the vehicle loading compartment Sc by the exhaust fan 20 connected to the lower duct 12 of the exhaust duct 11 passes through a through hole 9h formed in the upper deck 9A and is discharged to the outside of the hull 2 ​​through the exhaust port 15h and ventilation hole 3h of the upper duct 13. Since the exhaust duct 11 has a lower duct 12 located below the upper deck 9A and an upper duct 13 located above the upper deck 9A, it is possible to prevent the lower duct 12 from becoming too large in the vehicle loading compartment Sc below the upper deck 9A. Therefore, it is possible to prevent the vehicle loading compartment Sc below the upper deck 9A from becoming too small.

[0045] (3) The vessel 1 according to the third embodiment is the vessel 1 of (2), wherein the exhaust fan 20 includes a cylindrical body 21 that extends diagonally downward from the lower duct 12 along the axis C toward the inside in the ship width direction W, and the fan body 22 is provided inside the cylindrical body 21.

[0046] As a result, the rotation of the fan body 22 of the exhaust fan 20 allows exhaust from the vehicle mounting compartment Sc to be efficiently guided through the cylindrical body 21 to the exhaust duct 11.

[0047] (4) The vessel 1 according to the fourth embodiment is the vessel 1 of (3), wherein the exhaust devices 10A and 10B have a drain receiver 31 located vertically below the lowest part of the cylindrical body 21.

[0048] This allows the moisture contained in the exhaust drawn into the exhaust duct 11 by the exhaust fan 20 to be collected by the drain receiver 31, thereby preventing the moisture from falling into the vehicle's mounting compartment Sc.

[0049] (5) The vessel 1 according to the fifth embodiment is any one of the vessels 1 described in (2) to (4), wherein the upper duct 13 is provided with maintenance hatches 18A and 18B that allow access to the upper duct 13, located above the upper deck 9A.

[0050] This allows workers to easily enter the upper duct 13 and perform maintenance and other tasks as needed.

[0051] (6) The vessel 1 according to the sixth embodiment is any one of the vessels 1 from (2) to (5), wherein the exhaust devices 10A, 10B further comprises a cover 19A that is provided to open and close the ventilation hole 3h.

[0052] This allows the ventilation holes 3h to be closed off in the event of a fire or other emergency.

[0053] (7) The vessel 1 according to the seventh embodiment is any one of the vessels 1 from (1) to (6), wherein the hull 2 ​​has a plurality of steel members 6 that are spaced apart in the bow-stern direction FA and extend in the vertical direction Dv along the inner surfaces 3f of the sides 3A, 3B that face inward in the width direction W, and the exhaust devices 10A, 10B are provided between adjacent steel members 6 in the bow-stern direction FA.

[0054] In this way, the exhaust devices 10A and 10B are positioned between steel members 6 provided along the inner surface 3f of the side 3A facing inward in the ship's width direction W, thereby preventing the exhaust devices 10A and 10B from protruding into the vehicle loading compartment Scr. [Explanation of symbols]

[0055] 1...Ship 2…hull 3A, 3B...Side 3f…Inner surface 3h... Ventilation holes 4...Bottom of the ship 5…Upper deck 6…Steel material 7...Superstructure 9...Deck 9A…Upper deck 9B…Lower deck 9h…Through hole 10A, 10B... Exhaust system 11... Exhaust duct 12... Lower duct 13… Upper duct 14... Louvers 15... Combing 15h... Exhaust vent 18A, 18B... Maintenance hatches 19A, 19B…Lid body 20... Exhaust fan 21...Cylindrical body 21d...Bottom 22... Fan body 31... Drain receiver 32... Drain pipe 121... Side panel 122...Bottom plate 123…Slanted plate 123h…Suction hole 124...end plate 131, 135... Side panels 132... Tabletop 133...end plate C…Axis line R…Discharge path Sc... Vehicle loading compartment

Claims

1. A hull having a pair of sides, The decks, which are arranged in multiples with vertical spacing within the hull to form vehicle loading compartments, The vessel is equipped with an exhaust system that exhausts the vehicle from the vehicle compartment to the outside of the hull, The exhaust device is An exhaust fan is provided in the corner between the upper deck, which is located on the upper side of two adjacent decks in the vertical direction, and the side of the ship, and has a fan body that rotates around an axis inclined with respect to the width direction and the vertical direction, and exhausts air from the vehicle loading compartment, An exhaust duct that defines a discharge path for discharging the air exhausted by the exhaust fan to the outside of the hull, A ship equipped with the following features.

2. The aforementioned hull is A ventilation hole formed so as to penetrate the side of the hull in the direction of the ship's width, The upper deck has a through hole that penetrates in the vertical direction, The aforementioned exhaust duct is A lower duct is provided below the upper deck and connected to the exhaust fan, The system includes an upper duct provided above the through-hole, connected to the lower duct, and having an exhaust port facing the outside of the hull from the ventilation hole. The vessel according to claim 1.

3. The aforementioned exhaust fan is The lower duct comprises a cylindrical body that extends diagonally downward from the axial line toward the inside in the direction of the ship's width, The fan body is provided inside the cylindrical body. The vessel according to claim 2.

4. The exhaust device is The cylindrical body has a drain receiver located vertically below its lowest point. The vessel according to claim 3.

5. The upper duct is provided with a maintenance hatch located above the upper deck that allows access to the upper duct. The vessel according to claim 2 or 3.

6. The exhaust device further comprises a cover provided to be able to open and close the ventilation hole. The vessel according to claim 2 or 3.

7. The hull has a plurality of steel members extending in the vertical direction along the inner surface of the side facing inward in the width direction of the ship, spaced apart in the bow-stern direction. The exhaust device is installed between adjacent steel members in the bow-stern direction. The vessel according to claim 1 or 2.

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