CN115384687A - Dual-fuel ship - Google Patents

Abstract

The utility model relates to a boats and ships technical field particularly, relates to a dual-fuel boats and ships the gas is prepared to be located the top of main deck, the deck of mooring that sinks with between the steering wheel the deck all with the main deck is parallel, just the main deck the deck of mooring that sinks with between the steering wheel the deck from the top down arranges in proper order between the steering wheel the deck with be between the steering wheel between the main deck with it forms mooring equipment installation compartment to sink between the mooring deck, in the steering wheel within a definite time just part outside the mooring equipment installation compartment forms steering wheel installation compartment. The application aims to solve the technical problems that the size of a gas preparation room in the ship length direction is greatly limited and the space in a room is also limited in order to arrange a lower mooring device, so that the selection of equipment manufacturers is very limited, and the existing gas preparation room and a tail mooring device are arranged on a main deck.

Description

Dual-fuel ship

Technical Field

The application relates to the technical field of ships, in particular to a dual-fuel ship.

Background

With the implementation of ship exhaust emission restriction regulations, dual-fuel ships have generated a great demand in the shipbuilding market. The gas supply system of the dual-fuel ship is arranged in a gas preparation room, the structure in the traditional gas preparation room is generally two-layer, the area of an upper-layer deck structure is small and is less than half of the area of a lower layer, the gas preparation room is mainly used for arranging related equipment or components of gas preparation, other equipment of the gas supply system is arranged on a main deck layer, the plane size of a room is limited, and the height size is large. Aiming at the problems of the structure in the traditional gas preparation room, the technical personnel provide the gas preparation room only with a single-layer deck, and all main equipment in the gas preparation room is arranged on the single-layer deck. However, since the gas preparation room and the aft mooring equipment are disposed on the main deck, the size of the gas preparation room in the ship length direction is very limited in order to dispose the lower mooring equipment, and the space in the room is also limited, so that the choice of the equipment manufacturer is very limited.

Disclosure of Invention

It is an object of the present application to address at least one of the technical problems involved in the background and to provide a dual fuel vessel.

In order to achieve the purpose, the following technical scheme is adopted in the application:

one aspect of the application provides a dual-fuel ship, including between gas preparation, main deck, the deck of mooring between sinking and steering wheel gas preparation position in the top of main deck, the deck of mooring that sinks with between the steering wheel the deck all with the main deck is parallel, just the main deck the deck of mooring that sinks with the deck from the top down arranges in proper order between the steering wheel the deck with be between the steering wheel between the main deck with it forms mooring equipment installation compartment to moor to sink between the deck, in the steering wheel within a definite time just part outside the mooring equipment installation compartment forms steering wheel installation compartment.

Optionally, the mooring device further comprises a steering engine arranged on a deck between the steering engines, the steering engine is provided with a rudder stock, and a watertight manhole is arranged on the sinking mooring deck.

The technical scheme has the beneficial effects that: therefore, when the rudder stock is disassembled during overhaul of the steering engine, a watertight manhole cover on the watertight manhole is opened, and a sufficient drawing space is ensured above the watertight manhole cover.

Optionally, be formed with the lifting device mouth on the main deck, and install the deck loop wheel machine on the deck sink and moor and be provided with the watertight hatch on the deck, in vertical direction the lifting device mouth with the watertight hatch is just right, the deck loop wheel machine is used for through the lifting device mouth and/or the watertight hatch hoist and mount article in the steering wheel room.

The technical scheme has the beneficial effects that: therefore, parts needing to be overhauled and replaced in the steering engine room can enter and exit the steering engine room through the object hanging opening and the watertight hatch by utilizing the deck crane. Preferably, a watertight hatch cover is provided over the watertight hatch.

Optionally, a rear wall of the gas preparation compartment at least partially overlaps a front wall of the mooring compartment in a length direction of the dual fuel vessel.

Optionally, the gas preparation room comprises a preparation room deck, the preparation room deck is arranged parallel to the main deck, and the preparation room deck is connected with the main deck through a grillage or a column; or,

the gas preparation room comprises a preparation room deck, and the preparation room deck is a part of the main deck.

Optionally, the gas preparation room and the fuel tank form a walking channel in the width direction of the ship, and the deck crane and the object lifting opening are both arranged close to the walking channel.

The technical scheme has the beneficial effects that: this makes things convenient for the staff can reach deck crane and hang the thing mouth through walking passageway with faster speed, and then improves hoist and mount efficiency.

Optionally, the gas preparation room further comprises a cabin installed on the main deck, the gas preparation room comprises a preparation room deck and a preparation room side wall which are connected with each other, the preparation room deck is arranged parallel to the main deck, the preparation room deck and the main deck are connected through a grillage or a pillar, the preparation room side wall is arranged facing the cabin, and the preparation room side wall and the cabin are separated from each other.

Optionally, the mooring device further comprises a winch, the winch is located in the mooring device installation compartment, the winch is fixed to the submerged mooring deck, a cable guide hole is formed in the side wall of the mooring device installation compartment, a cable of the winch penetrates through the cable guide hole, and the cable is in sliding fit with the cable guide hole.

The technical scheme has the beneficial effects that: in this way, a large amount of space is made available in the area of the rear of the main deck for the arrangement of gas preparation rooms.

Optionally, the mooring equipment installation compartment includes a stern side wall, a port side wall, and a starboard side wall, the stern side wall is disposed near the stern of the ship, the port side wall is disposed near the port of the ship, the starboard side wall is disposed near the starboard of the ship, and the stern side wall, the port side wall, and the starboard side wall are all provided with cable guide holes.

The technical scheme has the beneficial effects that: therefore, when the dual-fuel ship is in shore or is close to other ships, the winch can conveniently send out and retrieve the mooring rope by selecting the corresponding guide cable hole on one side according to the relative position of the shore and the dual-fuel ship, or can send out and retrieve the mooring rope by selecting the corresponding guide cable hole on one side according to the relative position of the other ships and the dual-fuel ship, so that the mooring flexibility is improved.

Optionally, the dual-fuel ship comprises four winches, two of the winches are matched with the cable guide holes in the side wall of the stern in a one-to-one correspondence manner, the other two winches are respectively matched with the cable guide holes in the side wall of the port and the cable guide holes in the side wall of the starboard in a one-to-one correspondence manner, and the four winches are linearly arranged in the width direction of the dual-fuel ship.

The technical scheme has the beneficial effects that: in this way, the T-shaped arrangement used by the winches in the past is avoided, thereby reducing the space occupied by the winches in the length direction of the dual fuel vessel.

Optionally, still including being located the inclined ladder passageway in the mooring equipment installation compartment be provided with the access & exit on the main deck, the top of inclined ladder passageway with the access & exit is connected, the bottom mounting of inclined ladder passageway is in the deck of mooring that sinks.

The technical scheme has the beneficial effects that: this has set up the access way alone for mooring equipment installation compartment, need not to utilize the passageway between the steering wheel of steering wheel earlier to get into steering wheel installation compartment, gets into mooring equipment installation compartment again, has optimized the route of marcing, has effectively saved the used time of staff business turn over mooring equipment installation compartment, has improved work efficiency.

Optionally, the ship comprises two inclined ladder channels, and the two inclined ladder channels are symmetrically arranged in the width direction of the ship.

The technical scheme has the beneficial effects that: because the main deck of boats and ships is great in the width direction size of boats and ships, if only set up one inclined ladder passageway, no matter the staff reaches the route of inclined ladder passageway all longer from inside or outside the mooring equipment installation compartment, and set up two inclined ladder passageways and then the staff has more route selections, and then select the relatively shorter route and pass in and out the mooring equipment installation compartment, improve work efficiency.

Optionally, the fuel compartment system further comprises two fuel compartments, the two fuel compartments are respectively located on two sides of the gas preparation room in the width direction of the ship, a walking channel is formed between each of the two fuel compartments and the gas preparation room, an entrance and an exit of one inclined ladder channel are arranged close to one walking channel, and an entrance and an exit of the other inclined ladder channel are arranged close to the other walking channel.

The technical scheme has the beneficial effects that: the working personnel can reach the entrance and exit of the inclined ladder channel by a short path, so that the time for the working personnel to reach the entrance and exit of the inclined ladder channel is shortened, and the working efficiency is improved.

The technical scheme provided by the application can achieve the following beneficial effects:

the dual-fuel ship provided by the embodiment of the application is characterized in that a sunken mooring deck is arranged in a steering engine room below a main deck, the sunken mooring deck divides the steering engine room into a mooring equipment installation compartment and a steering engine installation compartment, mooring equipment is accommodated in the mooring equipment installation compartment, the space which is not fully utilized in the steering engine room is effectively utilized, in addition, after the sunken mooring deck is arranged in the steering engine room below the main deck, a plurality of fuel gas preparation rooms can be expanded towards the tail part, the space between the expanded fuel gas preparation rooms can meet the equipment arrangement of more manufacturers in the market, and the selection of the manufacturers is flexible.

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It should be apparent that the drawings in the following description are of some embodiments of the application and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic diagram of a partial top view of an embodiment of a dual-fuel vessel provided by an embodiment of the present application;

fig. 2 is a partially schematic top view of an embodiment of a mooring equipment installation compartment provided in an embodiment of the present application;

fig. 3 is a partial front view structural schematic diagram of an implementation manner of the dual-fuel ship provided by the embodiment of the application.

Reference numerals are as follows:

01-main deck; 02-fuel tank;

03-a walking channel; 05-hanging a material port;

06-an inlet and an outlet; 07-a deck crane;

08-gas preparation room; 09-ventilating mast;

10-a cable; 11-a fairlead;

12-bollard; 13-a winch;

14-a submerged mooring deck; 15-inclined ladder channel;

16-a steering engine mounting compartment; 17-deck between steering engines;

18-watertight manhole covers; 19-mooring installation compartment;

20-steering engine.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and operate, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1 to 3, one aspect of the present application provides a dual-fuel ship, which includes a gas preparation room 08, a main deck 01, a submerged mooring deck 14, and an inter-steering engine deck 17, where the gas preparation room 08 is located above the main deck 01, the submerged mooring deck 14 and the inter-steering engine deck 17 are both parallel to the main deck 01, and the main deck 01, the submerged mooring deck 14, and the inter-steering engine deck 17 are sequentially arranged from top to bottom, an inter-steering engine is located between the inter-steering engine deck 17 and the main deck 01, a mooring equipment installation compartment 19 is formed between the main deck 01 and the submerged mooring deck 14, and a portion inside the inter-steering engine and outside the mooring equipment installation compartment 19 forms a steering engine installation compartment 16.

It will be appreciated that the submerged mooring deck 14 is dimensioned to meet the deployment requirements of the mooring facility; preferably, the submerged mooring deck 14 is designed for water tightness; it is possible to have a certain overlap of the mooring installation compartment 19 and the gas preparation compartment 08 in the vertical direction.

The dual-fuel ship that this application embodiment provided sets up mooring deck 14 that sinks in the steering wheel room that is located main deck 01 below, mooring deck 14 that sinks separates the steering wheel room for mooring equipment installation compartment 19 and steering wheel installation compartment 16, reuse mooring equipment installation compartment 19 to hold mooring equipment, the space that is not fully utilized in the steering wheel room has effectively been utilized, and, set up mooring deck 14 that sinks in the steering wheel room that is located main deck below, gas preparation room 08 can enlarge a lot to the afterbody, 08 spaces in gas preparation room after the expansion can satisfy the equipment arrangement of more producers on the market, the producer selection is just nimble many.

Optionally, the dual-fuel ship that this application embodiment provided still includes the steering wheel 20 of installing on deck 17 between the steering wheel, steering wheel 20 has the rudderstock sink mooring deck 14 is last to be provided with the watertight manhole. Preferably, the watertight manhole is square. Therefore, when the steering engine 20 overhauls and removes the rudder stock, the watertight manhole cover 18 on the watertight manhole is opened, and enough drawing space above the manhole is ensured.

Optionally, a lifting object opening 05 is formed in the main deck 01, a deck crane is installed on the deck, a watertight hatch is arranged on the sunken mooring deck 14, the lifting object opening 05 is right opposite to the watertight hatch in the vertical direction, and the deck crane is used for lifting objects in the steering engine room through the lifting object opening 05 and/or the watertight hatch. Therefore, parts needing to be overhauled and replaced in the steering engine room can enter and exit the steering engine room through the object hanging opening 05 and the watertight hatch by using a deck crane. Preferably, a sling opening cover is provided to the sling opening 05.

Optionally, the rear wall of the gas preparation room 08 at least partially overlaps the front wall of the mooring compartment 19 in the length direction of the dual fuel vessel. It will be appreciated that the rear wall of gas preparation room 08 and the front wall of mooring compartment 19 are both arranged in the height direction of the dual-fuel vessel, in the length direction of which the rear wall of gas preparation room 08 at least partially overlaps the front wall of mooring compartment 19, including the alignment of the rear wall of gas preparation room 08 and the front wall of mooring compartment 19. Of course, it is also possible to make the mooring equipment installation compartment 19 comprise a stern sidewall to which one end of the sunken mooring deck 14 is fixed in the length direction of the dual-fuel vessel, and the gas preparation room 08 at least partially overlaps the mooring equipment installation compartment 19 in the length direction of the dual-fuel vessel. The gas preparation room 08 and the mooring equipment installation compartment 19 are at least partially overlapped in the length direction of the dual-fuel vessel, which marks that the gas preparation room 08 is expanded to a certain extent in the stern direction, and the accommodating space of the gas preparation room 08 is further increased so as to accommodate more necessary equipment and perform proper and reasonable layout. In the embodiment of the present application, one end of the preferred moored sunken deck 14 is fixed to the stern sidewall of the dual-fuel vessel such that the mooring equipment installation compartment 19 is disposed adjacent to the stern sidewall, and thus the moored sunken deck 14 may also be referred to as an aft mooring deck.

Optionally, the gas preparation room 08 comprises a preparation room deck, the preparation room deck is arranged parallel to the main deck 01, and a plate frame or a column is arranged between the preparation room deck and the main deck 01; or,

the gas preparation room 08 comprises a preparation room deck, which is part of the main deck 01.

When the gas preparation room 08 is adopted to include a preparation room deck, the preparation room deck is arranged in parallel with the main deck 01, and the preparation room deck is fixedly connected with the main deck 01, the gas preparation room 08, an upper cabin structure, internal equipment and the like can be designed into an independent block, and the independent block can be independently built, independently outfitted and independently carried.

Optionally, the dual-fuel ship that this application embodiment provided still includes fuel compartment 02, in the width direction of boats and ships the gas is prepared and is prepared between 08 and form walking passageway 03 between the fuel compartment 02, deck crane 07 with hang thing mouth 05 all be close to walking passageway 03 sets up. This makes things convenient for the staff can reach deck crane 07 and hang thing mouth 05 through walking channel 03 with faster speed, and then improves hoist and mount efficiency.

Optionally, the dual-fuel ship that this application embodiment provided still includes install in the cabin of main deck 01, the gas is prepared and is included deck and preparation room lateral wall between interconnect's preparation, the deck is on a parallel with main deck 01 sets up between the preparation, just the deck with connect through grillage or stand between the preparation with main deck 01, the lateral wall face between the preparation the cabin setting, just the lateral wall with mutual separation between the cabin is prepared.

In the conventional dual-fuel ship, the gas preparation room and the engine compartment shed share one side wall, while in the embodiment of the application, the gas preparation room 08 adopts a side wall of the preparation room separated from the engine compartment shed, the side wall of the preparation room is not shared by the gas preparation room 08 and the engine compartment shed, so that the gas preparation room 08 and the engine compartment shed belong to different general sections respectively, the construction of the gas preparation room 08 and the construction of the engine compartment shed can be carried out separately, and the carrying progress of the engine compartment shed is not easily influenced when equipment is installed in the gas preparation room 08; in some cases, equipment installed on a main deck 01 in a gas preparation room 08 must be installed in place before a main section where the gas preparation room 08 is located is installed, otherwise, a main section installation plan is affected, if a fabrication hole is formed in a bulkhead of the gas preparation room for equipment installation after the main section is installed, installation difficulty is high, and cost is high.

Optionally, the dual-fuel ship that this application embodiment provided still includes winch 13, winch 13 is located in mooring equipment installation compartment 19, winch 13 is fixed in mooring deck 14 sinks, be formed with fairlead hole 11 on the lateral wall of mooring equipment installation compartment 19, the hawser 10 of winch 13 passes fairlead hole 11, just hawser 10 with fairlead hole 11 sliding fit. In this way, a large amount of space is freed up in the area at the rear of the main deck 01 for the gas preparation bay arrangement 08, and the winches 13 installed in the mooring installation compartment 19 can be used for vessel mooring operations via the fairlead holes 11.

Optionally, the mooring equipment installation compartment 19 includes a stern side wall, a port side wall and a starboard side wall, the stern side wall is disposed near the stern of the ship, the port side wall is disposed near the port of the ship, the starboard side wall is disposed near the starboard of the ship, and the stern side wall, the port side wall and the starboard side wall are all provided with the cable guide holes 11. Therefore, when the dual-fuel ship is in shore or is close to other ships, the winch 13 can conveniently send and retrieve the cable out of the cable guide hole 11 on the corresponding side according to the relative position of the shore and the dual-fuel ship, or send and retrieve the cable out of the cable guide hole 11 on the corresponding side according to the relative position of the other ships and the dual-fuel ship, and mooring flexibility is improved.

The conventional design is 3 winches 13, two platforms aft and the other at the bow end of the vessel centerline. The winch 13 with the center line has a bidirectional cable stranding function, and a port cable stranding or a starboard cable stranding is selected according to the berthing condition. The arrangement of the 3 winches 13 is T-shaped, so that the space requirement in the ship length direction is large, if the arrangement form is adopted, the bulkhead of the compartment head part needs to extend towards the ship head direction, the space occupation between steering engines is large, and the outfitting arrangement on the back side of a main deck is influenced. In view of this problem, in the embodiment of the present application, optionally, the dual-fuel vessel provided in the embodiment of the present application includes four winches 13, two of the winches 13 are in one-to-one correspondence with the cable guide holes 11 on the stern side wall, the other two winches 13 are in one-to-one correspondence with the cable guide holes 11 on the port side wall and the cable guide holes 11 on the starboard side wall, and the four winches 13 are linearly arranged in the width direction of the dual-fuel vessel. In this way, the T-arrangement used in the past for each winch 13 is avoided, thereby reducing the space occupied by each winch 13 in the length direction of the dual fuel vessel. In the embodiment of the present application, four winches 13 are preferably provided, wherein two winches 13 are both matched with the cable guide hole 11 on the side wall of the stern; mooring bollards 12 are also preferably mounted on the sunken mooring deck 14.

Optionally, the dual-fuel ship that this application embodiment provided still includes and is located inclined ladder passageway 15 in the mooring equipment installation compartment 19 be provided with access & exit 06 on the main deck 01, the top of inclined ladder passageway 15 with access & exit 06 is connected, the bottom mounting of inclined ladder passageway 15 is in the deck 14 of mooring sinks. This has set up the access way alone for mooring equipment installation compartment 19, need not to utilize the passageway between the steering wheel of steering wheel earlier and gets into steering wheel installation compartment 16, gets into mooring equipment installation compartment 19 again, has optimized the route of marcing, has effectively saved the staff and has passed in and out the time that mooring equipment installation compartment 19 used, has improved work efficiency.

Optionally, the dual-fuel ship provided in this embodiment of the present application includes two inclined ladder channels 15, where the two inclined ladder channels 15 are symmetrically disposed in the width direction of the ship. Because the main deck 01 of the vessel is large in the width direction of the vessel, if only one ramp channel 15 is provided, the path from the inside or outside of the mooring facility installation compartment 19 to the ramp channel 15 is long for the staff, and the two ramp channels 15 are provided, so that the staff has more path options, and further selects a relatively short path to enter and exit the mooring facility installation compartment 19, thereby improving the working efficiency.

Optionally, the dual-fuel ship that this application embodiment provided still includes two fuel tanks 02, two on the width direction of boats and ships the fuel tanks 02 are located respectively the both sides of gas preparation room 08, two the fuel tanks 02 with all form walking passageway 03 between the gas preparation room 08, one the access & exit 06 of inclined ladder passageway 15 is close to one walking passageway 03 sets up, another the access & exit 06 of inclined ladder passageway 15 is close to another walking passageway 03 sets up. This enables the worker to reach the doorway 06 of the inclined ladder passageway 15 in a shorter path, thereby shortening the time for the worker to reach the doorway 06 of the inclined ladder passageway 15 and improving the work efficiency. In the embodiment of the application, the ventilating mast 09 is preferably arranged on any side as close as possible to the stern and is used for arranging the ventilating pipeline of the dual-fuel system.

In order to better explain the dual-fuel ship provided by the application, the application also provides an application example of the dual-fuel ship, wherein the application example is as follows:

former afterbody mooring equipment arranges at main deck, considers that the steering wheel interlayer height is very big, and the direction of height can satisfy steering wheel and deck mooring equipment simultaneously and arrange, so optimize the position of mooring equipment, mainly as follows:

a part of deck is newly added at a proper height between the steering engines, the length of the deck meets the requirement that the arrangement of mooring equipment is proper, and the deck is designed according to the watertight requirement.

And arranging mooring equipment such as a winch, a mooring bollard, a fairlead and the like and a channel or a platform required by operation on the newly-added deck according to the arrangement requirement of the mooring equipment. A square watertight manhole cover is arranged on the front face of the deck and above the rudder stock, and the cover is opened when the rudder stock is dismounted during overhaul of the steering engine, so that enough drawing space is ensured above the cover. A watertight hatch cover is arranged at a proper position of the deck and used as a hanging opening between the steering engines.

Two ramp channels are arranged at appropriate locations on the main deck leading to the sunken mooring deck. A lifting opening is arranged above the watertight hatch cover, a small deck crane is arranged near the lifting opening, and parts needing to be overhauled and replaced can enter and exit the steering engine room through the small crane, the lifting opening and the lifting opening of the hatch cover below. And a ventilating mast is arranged on any side board as close to the stern as possible and is used for arranging a ventilating pipeline of the dual-fuel system.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. Dual-fuel boats and ships, its characterized in that, including between gas is prepared, main deck, the deck between the deck of mooring that sinks and steering wheel the gas is prepared and is located the top of main deck, the deck of mooring that sinks with between the steering wheel the deck all with the main deck is parallel, just the main deck the deck of mooring that sinks with between the steering wheel the deck from the top down arranges in proper order between the steering wheel the deck with be between the main deck with it forms mooring equipment installation compartment to moor between the deck to sink, in the steering wheel within a definite time just part outside the mooring equipment installation compartment forms steering wheel installation compartment.

2. The dual-fuel ship of claim 1, further comprising a steering engine mounted on a deck between the steering engines, wherein the steering engine has a rudder stock, and a watertight manhole is arranged on the sunken mooring deck.

3. The dual-fuel ship of claim 1, wherein a cargo lifting opening is formed in the main deck, a deck crane is mounted on the deck, a watertight hatch is arranged on the sunken mooring deck, the cargo lifting opening is opposite to the watertight hatch in the vertical direction, and the deck crane is used for lifting objects in the steering engine room through the cargo lifting opening and/or the watertight hatch.

4. The dual fuel vessel of claim 1, wherein a back wall of the gas preparation bay at least partially overlaps a front wall of the mooring compartment in a length direction of the dual fuel vessel.

5. The dual fuel vessel of claim 4, wherein the gas preparation room includes a preparation room deck, the preparation room deck is disposed parallel to the main deck, and the preparation room deck and the main deck are connected by a grillage or a column; or,

the gas preparation room comprises a preparation room deck, and the preparation room deck is a part of the main deck.

6. The dual fuel vessel of claim 5, further comprising a hangar mounted to the main deck, the gas preparation room including a preparation room deck and a preparation room side wall connected to each other, the preparation room deck being disposed parallel to the main deck and connected to the main deck by a grillage or a pillar, the preparation room side wall being disposed facing the hangar and the preparation room side wall being separated from the hangar.

7. The dual fuel vessel of any one of claims 1 to 6, further comprising a winch located within the mooring equipment installation compartment, the winch being secured to the sunken mooring deck, a fairlead being formed in a sidewall of the mooring equipment installation compartment, a cable of the winch passing through the fairlead and being in sliding engagement with the fairlead.

8. The dual fuel vessel of claim 7, wherein the mooring equipment mounting compartment includes a stern sidewall disposed proximate a stern of the vessel, a port sidewall disposed proximate a port of the vessel, and a starboard sidewall disposed proximate a starboard of the vessel, fairlead holes being disposed on the stern sidewall, the port sidewall, and the starboard sidewall.

9. The dual fuel vessel of claim 8, comprising a plurality of the winches, each winch being engaged in one-to-one correspondence with a fairlead hole on the stern side wall, a fairlead hole on the port side wall, and a fairlead hole on the starboard side wall.

10. The dual fuel vessel of claim 8, further comprising two ramp channels located in the mooring equipment installation compartment, an access opening being provided in the main deck, the top end of the ramp channels being connected to the access opening, the bottom end of the ramp channels being fixed to the submerged mooring deck; the two inclined ladder channels are symmetrically arranged in the width direction of the ship.

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