Method for reorganizing equipment on a ship's hull

Abstract

In a method of reconfiguring the equipment on a ship hull in one embodiment, after removing some or all of a plurality of first purpose units (3) constituting a first purpose equipment (30) disposed on a ship hull (2) from the ship hull (2), a plurality of second purpose units are disposed on the ship hull (2) to construct a second purpose equipment. For example, the first purpose units (3) are medical units, and the first purpose equipment (30) is a medical equipment. Alternatively, the second purpose units are medical units, and the second purpose equipment is a medical equipment.

Description

Technical Field

[0001] The invention relates to a method for reassembling equipment on a ship hull. Background Art

[0002] There has been a long-standing trend of converting existing ships into ships for other purposes. For example, the converted existing ships are various transport ships (e.g., oil tankers).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Chinese Utility Model No. 205569455 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] For example, when converting an oil tanker into a luxury cruise ship, the hull structures are completely different. Therefore, converting an oil tanker into a luxury cruise ship requires costs and time comparable to building a new ship. With this in mind, the idea is to restructure the ship's equipment without significantly remodeling the hull itself.

[0008] In addition, Patent Document 1 describes the construction of a hospital ship by installing multiple medical units on the hull to construct medical equipment, but Patent Document 1 does not describe the construction of other equipment instead of medical equipment, nor does it describe the construction of medical equipment instead of equipment other than medical equipment.

[0009] Therefore, an object of the present invention is to provide a reconstruction method for equipment on a ship's hull that can be rebuilt with less cost and in a shorter time.

[0010] Means for solving problems

[0011] In order to solve the above-mentioned problems, the reorganization method of equipment on a hull of the present invention is characterized in that after removing some or all of the multiple first-purpose units set on the hull that constitute the first-purpose equipment from the hull, multiple second-purpose units are set on the hull to construct the second-purpose equipment.

[0012] According to the above structure, by replacing some or all of the first purpose units with second purpose units, the first purpose equipment can be reorganized into the second purpose equipment. Therefore, the ship can be remodeled at a low cost and in a short time.

[0013] Effects of the Invention

[0014] According to the present invention, a ship can be remodeled at a lower cost and in a shorter time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a side view of the ship having the first-use equipment.

[0016] Figure 2 is Figure 1 is an exploded perspective view of the ship shown in Fig. 1.

[0017] Figure 3 is a side view of the ship having the second-use equipment.

[0018] Figure 4 is Figure 3 is an exploded perspective view of the ship shown in Fig. 2.

[0019] Figure 5 (a) and (b) of Fig. 1 are a perspective view and a bottom view, respectively, of the first-use unit, (c) and (d) are a perspective view and a bottom view, respectively, of the other first-use unit.

[0020] Figure 6 (a) and (b) of Fig. 2 are a perspective view and a bottom view, respectively, of the second-use unit, (c) and (d) are a perspective view and a bottom view, respectively, of the other second-use unit.

[0021] Figure 7 is a plan view of a portion of the hull of one embodiment of the present application.

[0022] Figure 8 is a side view of a throughway container.

[0023] Figure 9 is a diagram showing an example in which a hospital building is provided on a hull.

[0024] Figure 10 (a) of Fig. 3 is a front view of a stand provided with wheels and a unit to which the stand is attached, and (b) is a side view of the stand and the unit. DETAILED DESCRIPTION

[0025] The reorganization method of the equipment on the hull of one embodiment of the present application includes Figure 1 a first process of constructing the first-use equipment 30 on the hull 2 as shown in Fig. 1, and Figure 3 a second process of constructing the second-use equipment 40 on the hull 2 as shown in Fig. 2. That is, the ship 1A having the first-use equipment 30 is obtained by the first process, and the ship 1A is reformed into the ship 1B having the second-use equipment 40 by the second process. In addition, the reorganization method of the equipment on the hull can include only the second process in the case where the first process has been completed.

[0026] Specifically, in the first process, the first-use equipment 30 is constructed on the hull 2 as shown in Fig. 1. Figure 1 and Figure 2 and the second-use equipment 40 is constructed on the hull 2 as shown in Fig. 2.As shown in (a) of FIG. 1, a plurality of first-use units 3 that constitute a first-use facility 30 are arranged on a hull 2 to construct the first-use facility 30. In a second process, after some or all of the first-use units 3 are removed from the hull 2, as shown in (b) of FIG. 1, a plurality of second-use units 4 that constitute a second-use facility 40 are arranged on the hull 2 to construct the second-use facility 40. Figure 3 and Figure 4 As shown in (a) of FIG. 1, a plurality of first-use units 3 that constitute a first-use facility 30 are arranged on a hull 2 to construct the first-use facility 30. In a second process, after some or all of the first-use units 3 are removed from the hull 2, as shown in (b) of FIG. 1, a plurality of second-use units 4 that constitute a second-use facility 40 are arranged on the hull 2 to construct the second-use facility 40.

[0027] The hull 2 includes an upper deck 23 on which the first-use units 3 and the second-use units 4 are placed. A bridge 24 is provided at the stern of the hull 2. However, the position of the bridge 24 is not limited to the stern, but can be the bow.

[0028] In the present embodiment, the first-use units 3 are medical units, and the first-use facility 30 is a medical facility. Therefore, the ship 1A is a medical ship. The second-use units 4 and the second-use facility 40 are not particularly limited, but for example, the second-use units 4 are cruise units, and the second-use facility 40 is a cruise facility. In this case, the ship 1B is a luxury cruise ship.

[0029] If the structure is as in the present embodiment, it is possible to convert a medical ship having a medical facility into a ship having another facility. However, in contrast to the present embodiment, the second-use units 4 can also be medical units, and the second-use facility 40 can also be a medical facility. In this case, it is possible to convert a ship having a facility other than a medical facility into a medical ship having a medical facility.

[0030] In the first-use units 3, as shown in (a) of FIG. 2, a plurality of unit-side first connectors 31 including interfaces for respective required infrastructures are provided. Similarly, in the second-use units 4, as shown in (b) of FIG. 2, a plurality of unit-side second connectors 41 including interfaces for respective required infrastructures are provided. Figure 2 Figure 4

[0031] On the other hand, a plurality of hull-side first connectors 21 connected to the unit-side first connectors 31 and a plurality of hull-side second connectors 22 connected to the unit-side second connectors 41 are provided on the hull 2. The hull-side first connectors 21 and the hull-side second connectors 22 are connected to various facilities mounted on the hull 2 via flexible pipes or cables, or the like.

[0032] In the present embodiment, the first-use units 3 are classified into a plurality of kinds. For example, as shown in (a) to (d) of FIG. 3, the first-use units 3 include two kinds of first-use units 3A, 3B. However, the first-use units 3 can also be one kind. Figure 5

[0033] ​​​Further, in the present embodiment, each first-purpose unit 3 is a container having an internal structure corresponding to its kind. Also, on the floor surface 32 of each first-purpose unit 3, the unit-side first connector 31 is provided at a different position according to the kind of the first-purpose unit 3 (in the case of the medical unit, on the side surface of the first-purpose unit 3, for example). Figure 2 From the viewpoint of easy understanding, the unit-side first connector 31 is depicted on the side surface of the first-purpose unit 3.

[0034] However, the unit-side first connector 31 does not necessarily need to be provided on the floor surface 32 of the first-purpose unit 3, and can be provided on the side surface of the first-purpose unit 3, for example.

[0035] As described above, in the present embodiment, the first-purpose unit 3 is a medical unit. The medical unit includes a living container, an isolation container, and a treatment container, for example. In the living container, equipment necessary for human life (such as a bed, a gas stove) is arranged inside. In the isolation container, a plurality of beds, equipment necessary for nursing of patients (such as a suction machine) is arranged inside. In the treatment container, medical equipment necessary for treatment of patients, pharmaceuticals are arranged inside.

[0036] Infrastructure necessary for the living container is electricity, gas, water supply, drainage, and the like. Infrastructure necessary for the isolation container is electricity, water supply, vacuum, drainage, and the like. Infrastructure necessary for the treatment container is electricity, water supply, oxygen, drainage, and the like.

[0037] Further, the medical unit sometimes includes a nursing container, a rehabilitation container, an infectious disease research container, and the like. Infrastructure necessary for the nursing container and the rehabilitation container is electricity, gas, tap water, drainage, and the like. Infrastructure necessary for the infectious disease research container is electricity, water supply, vacuum, drainage, and the like.

[0038] Regardless of whether the first-purpose unit 3 is a medical unit, the first-purpose unit 3 can include Figure 8 a passage container 5 serving as a passage, as shown. That is, in the inside of the passage container 5, a large-sized equipment is not arranged, and only a small-sized equipment such as a lighting fixture is arranged. For example, in the case where two passage containers 5 are connected, a connection module 7 composed of a bellows or the like can be provided at both ends of each passage container 5, and the connection modules 7 are joined to each other.

[0039] In the case where the first-purpose unit 3 includes the passage container 5, as shown in Figure 8 cables and / or pipes can be arranged along the ceiling of the passage container 5. The cables are used for power supply, and the pipes are used for flowing of gas or water, and the like. Alternatively, the cables and / or the pipes can be arranged along the bottom of the passage container 5. In the case where the cables and / or the pipes are arranged along the bottom of the passage container 5, a partition plate constituting a floor is provided above the cables and / or the pipes in the passage container 5.

[0040] In the present embodiment, all of the containers of the first use unit 3 are the same size. The containers can be arranged in a plane on the upper deck 23, or can be stacked in multiple layers on the upper deck 23.

[0041] However, one or several containers can be different in size from the other containers. Alternatively, all of the containers can be different in size. In addition, a plurality of containers can be combined to constitute one room. Furthermore, each first use unit 3 need not necessarily be a container, but can be an open unit.

[0042] The second use units 4 are classified into a plurality of types in the present embodiment, as with the first use units 3. For example, as shown in (a) to (d) of FIG. 10, the second use units 4 include two types of second use units 4A and 4B. However, the second use units 4 can be of one type. Figure 6

[0043] Furthermore, in the present embodiment, each second use unit 4 is a container having an internal structure corresponding to the type thereof. Also, on the bottom surface 42 of each second use unit 4, the unit-side second connector 41 is provided at a different position according to the type of the second use unit 4 (in Figure 4 the present embodiment, the unit-side second connector 41 is depicted on the side surface of the second use unit 4 for ease of understanding).

[0044] However, the unit-side second connector 41 need not necessarily be provided on the bottom surface 42 of the second use unit 4, but can be provided on the side surface of the second use unit 4, for example.

[0045] For example, in the case where the second use unit 4 is a cruising unit, the cruising unit includes a leisure container, a study container, a sports container, and the like. For example, the study container is configured with a plurality of desks and chairs and the like inside, and the infrastructure required for the sports container is electricity, water supply, drainage, and the like.

[0046] As with the first use units 3, the second use units 4 can include a passage container 5 serving as a passage. In this case, a cable and / or a conduit can be arranged along the ceiling or the bottom of the passage container 5 within the passage container 5.

[0047] In the present embodiment, all of the containers of the second use unit 4 are the same size. The containers can be arranged in a plane on the upper deck 23, or can be stacked in multiple layers on the upper deck 23.

[0048] ​However, the size of one or several containers can also be different from the size of the other containers. Alternatively, the size of all the containers can be different. In addition, a plurality of containers can be combined to constitute one room. Furthermore, the second-use units 4 do not necessarily have to be containers, but can be open units.

[0049] On the upper deck 23 of the hull 2, as shown in Figure 7 the same number of hull-side first connectors 21 as the number of types of the first-use units 3 and the same number of hull-side second connectors 22 as the number of types of the second-use units 4 are provided in correspondence with the individual areas (i.e., the occupied areas of the units) on which the first-use units 3 and the second-use units 4 are respectively placed. Furthermore, the hull-side first connectors 21 are provided at positions corresponding to the unit-side first connectors 31 which are positioned differently depending on the types of the first-use units 3. Likewise, the hull-side second connectors 22 are provided at positions corresponding to the unit-side second connectors 41 which are positioned differently depending on the types of the second-use units 4.

[0050] However, at least one of the plurality of types into which the first-use units 3 are classified can be the same as at least one of the plurality of types into which the second-use units 4 are classified. For example, one or several of the first-use units 3 and one or several of the second-use units 4 can be residential containers. Alternatively, one of the first-use units 3 and one of the second-use units 4 can be a power generation unit including a power generator. According to this structure, at least one of the first-use units 3 can be used as the second-use unit 4.

[0051] As explained above, in the reorganization method of the hull-onboard equipment of the present embodiment, by changing several or all of the first-use units 3 into the second-use units 4, the first-use equipment 30 can be reorganized into the second-use equipment 40. Therefore, the ship can be retrofitted at a low cost and in a short time.

[0052] In the present embodiment, furthermore, the unit-side first connectors 31 are provided on the first-use units 3, the unit-side second connectors 41 are provided on the second-use units 4, and the hull-side first connectors 21 and the hull-side second connectors 22 are provided on the hull 2. Therefore, the construction of the infrastructure system after the first-use units 3 are placed on the hull 2 can be performed simply, and the construction of the infrastructure system after the second-use units 4 are placed on the hull 2 can be performed simply.

[0053] Furthermore, in this embodiment, since the unit-side first connector 31 is provided at a different position depending on the type of the first application unit 3, it is possible to identify which hull-side first connector 21 is connected simply by the position of the unit-side first connector 31. Furthermore, since the unit-side second connector 41 is also provided at a different position depending on the type of the second application unit 4, it is possible to identify which hull-side second connector 22 is connected simply by the position of the unit-side second connector 41.

[0054] However, after obtaining ship 1A (medical ship), it is also possible to moor ship 1A to the quayside and flexibly connect ship 1A and the quayside in a manner that allows people to travel back and forth. This allows ship 1A to be used as a regular hospital. On the other hand, in the event of a disaster such as an earthquake or an outbreak of an infectious disease, hospitalized patients can be transferred to a hospital on land, and the flexible connection can be disconnected to allow ship 1A to sail to the site. This method of ship operation allows the medical equipment (first-purpose equipment 30) on board ship 1A to be fully utilized on-site.

[0055] Although not shown, a propulsion engine (internal combustion engine) that drives a propulsion propeller is mounted on the hull 2. In the case of mechanical propulsion, the propulsion engine directly drives the propulsion propeller. In the case of electric propulsion, the propulsion engine drives the propulsion propeller via a generator and an electric motor. In the case of mechanical propulsion, the propulsion engine may also drive the generator in addition to the propulsion propeller.

[0056] A power connector for externally supplying electricity generated by the propulsion engine driving the generator may also be provided on the hull 2. While the vessel 1A is anchored, the propulsion engine is typically rarely used. However, providing a power connector on the hull 2 ​​allows the propulsion engine to be operated while the vessel 1A is anchored, thereby selling the generated electricity. Alternatively, in the event of a disaster such as an earthquake, power can be supplied as needed after arriving at the scene.

[0057] (Variation)

[0058] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0059] For example, Figure 9 As shown, a stand 9 may be installed on at least one of the first application units 3 and / or at least one of the second application units 4. This structure allows cables and conduits to be arranged inside the stand 9, or allows the stand 9 to be used to align the height of the unit (3 or 4) with that of other equipment.

[0060] For example, Figure 9As shown, in the case where a hospital building 8 including the first floor 81 to the fourth floor 84 is provided in the hull 2 ​​as a permanent facility, the height of each floor of the second floor 82 to the fourth floor 84 is set to about 3 meters. The first floor 81 on the upper deck 23 is composed of a high-rise portion 81b of the same height as the second floor 82 to the fourth floor 84 and located below them, and a low-rise portion 81a of a lower height. Therefore, if a unit (3 or 4) equipped with a platform 9 is provided above the low-rise portion 81a, the floor height of the unit can be made consistent with the floor height of the second floor 82 of the hospital building 8. In addition, since the height of the unit (3 or 4) is set to about 2.5 meters for land transportation, if a unit (3 or 4) equipped with a platform 9 is provided above the unit (3 or 4) on the low-rise portion 81a, the floor height of the unit can be made consistent with the floor height of the third floor 83 of the hospital building 8. In addition, in Figure 9 In the embodiment, connection modules 7 are provided between the units (3 or 4) and between the units and the hospital building 8.

[0061] When the stand 9 is installed in at least one of the first application units 3 and / or at least one of the second application units 4, Figure 10 As shown in (a) and (b) of FIG. 2 , a plurality of wheels 91 may be provided on the frame 9. These wheels 91 are stored in the frame 9 when the frame 9 is located on the hull 2. In the example shown, the wheels 91 can swing between a use position in which the axle is horizontal and a storage position in which the axle is vertical. Alternatively, the wheels 91 can be removed from the frame 9 when the frame 9 is located on the hull 2. With such a structure, the unit (3 or 4) can be easily transported overland together with the frame 9.

[0062] (Summarize)

[0063] The method for reorganizing equipment on a hull of the present invention is characterized in that after removing several or all of the multiple first-purpose units constituting the first-purpose equipment set on the hull from the hull, multiple second-purpose units are set on the hull to construct the second-purpose equipment.

[0064] According to the above structure, by replacing some or all of the first purpose units with second purpose units, the first purpose equipment can be reorganized into the second purpose equipment. Therefore, the ship can be remodeled at a low cost and in a short time.

[0065] Alternatively, the first application unit may be a medical unit, and the first application equipment may be medical equipment. According to this configuration, a medical ship equipped with medical equipment can be converted into a ship equipped with other equipment.

[0066] Also, the second use unit can be a medical unit, and the second use device can be a medical device. According to this configuration, a ship having a device other than a medical device can be converted into a medical ship having a medical device.

[0067] Also, a plurality of unit-side first connectors including interfaces for respective required infrastructures can be provided in the plurality of first use units, a plurality of unit-side second connectors including interfaces for respective required infrastructures can be provided in the plurality of second use units, and a plurality of hull-side first connectors to be connected to the plurality of unit-side first connectors and a plurality of hull-side second connectors to be connected to the plurality of unit-side second connectors can be provided on the hull. According to this configuration, the construction of the infrastructure system after the first use units are provided on the hull can be easily performed, and the construction of the infrastructure system after the second use units are provided on the hull can be easily performed.

[0068] Also, the plurality of first use units can be classified into a plurality of categories, the plurality of first use units can be containers each having an internal structure corresponding to the category, and the unit-side first connectors can be provided at different positions on the bottom surface of each of the plurality of first use units according to the category. According to this configuration, which hull-side first connector is to be connected can be determined by the position of the unit-side first connector.

[0069] Also, the plurality of second use units can be classified into a plurality of categories, the plurality of second use units can be containers each having an internal structure corresponding to the category, and the unit-side second connectors can be provided at different positions on the bottom surface of each of the plurality of second use units according to the category. According to this configuration, which hull-side second connector is to be connected can be determined by the position of the unit-side second connector.

[0070] Also, the plurality of first use units can be classified into a plurality of categories, the plurality of second use units can be classified into a plurality of categories, and at least one of the plurality of categories in which the plurality of first use units are classified can be the same as at least one of the plurality of categories in which the plurality of second use units are classified. According to this configuration, at least one of the first use units can be used as a second use unit.

[0071] For example, the plurality of first use units and / or the plurality of second use units can include a passage container serving as a passage. In this case, a cable and / or a pipe can be arranged along a ceiling or a bottom of the passage container in the passage container.

[0072] Also, a stand can be installed in at least one of the plurality of first use units and / or at least one of the plurality of second use units. According to this structure, a cable, a conduit, or the like can be arranged inside the stand, or the height position of the unit can be made uniform with other equipment by the stand.

[0073] Also, a plurality of wheels can be installed on the stand, and the wheels can be housed in or detached from the stand when the stand is on the hull. According to this structure, the unit can be easily transported on land together with the stand.

[0074] BRIEF DESCRIPTION OF THE DRAWINGS

[0075] 2: hull; 21: hull-side first connector; 22: hull-side second connector; 3: first use unit; 30: first use equipment; 31: unit-side first connector; 32: bottom surface; 4: second use unit; 40: second use equipment; 41: unit-side second connector; 42: bottom surface; 5: passage container; 9: stand; 91: wheel.

Claims

1. A method of reorganizing a shipboard facility, wherein, after removing some or all of a plurality of first-purpose units provided on a shipboard to constitute a first-purpose facility from the shipboard, a plurality of second-purpose units are provided on the shipboard to construct a second-purpose facility, a plurality of unit-side first connectors including interfaces for respective required infrastructures are provided in the plurality of first-purpose units, a plurality of unit-side second connectors including interfaces for respective required infrastructures are provided in the plurality of second-purpose units, a plurality of shipboard-side first connectors connected to the plurality of unit-side first connectors respectively and a plurality of shipboard-side second connectors connected to the plurality of unit-side second connectors respectively are provided on the shipboard, the plurality of first-purpose units are classified into a plurality of categories, the plurality of first-purpose units are containers each having an internal structure corresponding to the categories, the unit-side first connectors are provided at different positions on a floor surface of each of the plurality of first-purpose units in accordance with the categories.

2. The method of reorganizing a shipboard facility according to claim 1, wherein, the first-purpose units are medical units and the first-purpose facility is a medical facility.

3. The method of reorganizing a shipboard facility according to claim 1, wherein, the second-purpose units are medical units and the second-purpose facility is a medical facility.

4. The method of reorganizing a shipboard facility according to any one of claims 1 to 3, wherein, the plurality of second-purpose units are classified into a plurality of categories, the plurality of second-purpose units are containers each having an internal structure corresponding to the categories, the unit-side second connectors are provided at different positions on a floor surface of each of the plurality of second-purpose units in accordance with the categories.

5. The method of reorganizing a shipboard facility according to any one of claims 1 to 3, wherein, the plurality of first-purpose units are classified into a plurality of categories, the plurality of second-purpose units are classified into a plurality of categories, at least one of the categories into which the plurality of first-purpose units are classified is identical to at least one of the categories into which the plurality of second-purpose units are classified.

6. The method of reorganizing a shipboard facility according to any one of claims 1 to 3, wherein, the plurality of first-purpose units and / or the plurality of second-purpose units include a passage container serving as a passage.

7. The method of reorganizing a shipboard facility according to claim 6, wherein, cables and / or conduits are arranged along a ceiling or a floor of the passage container.

8. The method of reorganizing a shipboard facility according to any one of claims 1 to 3, wherein, a stand is installed in at least one of the plurality of first-purpose units and / or at least one of the plurality of second-purpose units.

9. The method of reorganizing a shipboard facility according to claim 8, wherein, a plurality of wheels are installed on the stand, and the wheels are housed in the stand or detached from the stand when the stand is located on a shipboard.

10. A method of reorganizing a shipboard facility, wherein, After removing some or all of the plurality of first-purpose units disposed on the hull constituting the first-purpose equipment from the hull, a plurality of second-purpose units are disposed on the hull to construct the second-purpose equipment, The plurality of first application units are respectively provided with a plurality of unit-side first connectors including interfaces for infrastructure required by the respective units. The plurality of second application units are respectively provided with a plurality of unit-side second connectors including interfaces for infrastructure required by the respective units. The hull is provided with a plurality of hull-side first connectors connected to the plurality of unit-side first connectors respectively, and a plurality of hull-side second connectors connected to the plurality of unit-side second connectors respectively. The plurality of second use units are classified into a plurality of categories, The plurality of second-purpose units are containers having internal structures corresponding to the types, The unit-side second connectors are provided at different positions on the bottom surfaces of the respective second purpose units according to the types.

11. The method for reassembling equipment on a ship hull according to claim 10, wherein: The first-use unit is a medical unit, and the first-use device is a medical device.

12. The method for reassembling equipment on a ship hull according to claim 10, wherein: The second-use unit is a medical unit, and the second-use device is a medical device.

13. The method for reassembling equipment on a ship hull according to any one of claims 10 to 12, wherein: The plurality of first use units are classified into a plurality of categories, The plurality of second use units are classified into a plurality of categories, At least one of the plurality of categories into which the plurality of first application units are classified is the same as at least one of the plurality of categories into which the plurality of second application units are classified.

14. The method for reassembling equipment on a ship hull according to any one of claims 10 to 12, wherein: The plurality of first use units and / or the plurality of second use units include passage containers used as passages.

15. The method for reassembling equipment on a ship hull according to claim 14, wherein: Cables and / or conduits are arranged in the passage container along the ceiling or bottom of the passage container.

16. The method for reassembling equipment on a ship hull according to any one of claims 10 to 12, wherein: A stand is installed in at least one of the plurality of first application units and / or at least one of the plurality of second application units.

17. The method for reassembling equipment on a ship hull according to claim 16, wherein: A plurality of wheels are mounted on the platform. When the platform is on the hull, the wheels are stored in the platform or removed from the platform.

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