AU2021333331C1

AU2021333331C1 - Ship

Info

Publication number: AU2021333331C1
Application number: AU2021333331A
Authority: AU
Inventors: Hiroshi Tanaka; Taichi Tanaka
Original assignee: Mitsubishi Shipbuilding Co Ltd
Current assignee: Mitsubishi Shipbuilding Co Ltd
Priority date: 2020-08-24
Filing date: 2021-08-24
Publication date: 2023-10-05
Anticipated expiration: 2041-08-24
Also published as: AU2021333331A1; JP2022036609A; CN115803254A; EP4147961A4; AU2021333331B2; WO2022045096A1; EP4147961A1; KR20230003273A; JP7073458B2

Abstract

This ship comprises a hull, a tank, a lower support section, and an elastic support section. The tank is installed on the hull and is filled with liquefied gas. In the cross-sectional shape of the tank orthogonal to the fore-and-aft direction, the vertical direction is the longitudinal direction, and the lower support section supports the tank from below on the hull. The elastic support section elastically supports the tank higher than the lower support section on the hull.

Description

DESCRIPTION

Title of Invention

SHIP

Technical Field

[0001]

The present disclosure relates to a ship.

This application claims the priority of Japanese

Patent Application No. 2020-140909 filed in Japan on August

24, 2020, the content of which is incorporated herein by

reference.

Background Art

[0002]

A ship carrying a liquefied gas such as a liquefied

natural gas and an offshore facility or a ground base for

producing or storing the liquefied gas include a cargo tank

for accommodating the liquefied gas. For example, PTL 1

discloses a configuration in which the cargo tank is

supported by a hull via a cylindrical skirt.

Citation List

Patent Literature

[0003]

[PTL 1] Japanese Patent No. 5403900

Summary of Invention

Technical Problem

[00041

However, in the configuration disclosed in PTL 1, when

a size of the cargo tank is increased to increase capacity,

in some cases, a shaking amount of the cargo tank may

increase due to oscillation of the ship in a shape of the

cargo tank. In addition, the cargo tank is thermally shrunk

since the cargo tank accommodates the liquefied gas. A

total shrinkage amount thereof increases due to an increase

in the size of the cargo tank, and depends on the shape of

the cargo tank. For example, the cargo tank is thermally

shrunk when the cargo tank accommodates a low-temperature

liquefied gas. Even in this case, it is desirable that the

cargo tank is stably supported to safely store the

accommodated liquefied gas.

[0005]

The present disclosure is made to solve the above

described problems, and preferred embodiments of the

invention seek to provide a ship which can more stably

support a tank.

Solution to Problem

[00061

Described herein is a ship including a hull, a tank,

a lower support section, and an elastic support section.

The tank is installed on the hull, and is filled with a liquefied gas. The tank has a cross-sectional shape perpendicular to a bow-stern direction, in which an upward downward direction is set as a longitudinal direction, and the lower support section supports the tank on the hull from below. The elastic support section elastically supports the tank with respect to the hull above the lower support section.

[0006a]

According to an aspect of the present invention, there

is provided a ship comprising: a hull; a tank installed on

the hull, filled with a liquefied gas, and having a cross

sectional shape perpendicular to a bow-stern direction in

which an upward-downward direction is set as a longitudinal

direction; a lower support section that supports the tank

on the hull from below; and an elastic support section that

elastically supports the tank with respect to the hull above

the lower support section, wherein the tank includes a first

cylindrical section extending in the bow-stern direction, a

second cylindrical section provided above the first

cylindrical section, extending in the bow-stern direction,

and connected to the first cylindrical section, and a

communication section through which the first cylindrical

section and the second cylindrical section communicate with

each other.

Advantageous Effects of Invention

[0007]

According to the ship of the present disclosure, the

tank can be supported more stably.

Brief Description of Drawings

[0008]

Fig. 1 is a plan view illustrating an overall

configuration of a ship according to a first embodiment of

the present disclosure.

Fig. 2 is a sectional view perpendicular to a bow

stern direction of the ship according to the first

embodiment of the present disclosure, and is a sectional

view taken along line A-A in Fig. 1.

Fig. 3 is a view illustrating a tank provided in a

ship according to an embodiment of the present disclosure,

and is a sectional view taken along line B-B in Fig. 2.

Fig. 4 is a view illustrating a specific example of an

elastic support section provided in the ship according to

the embodiment of the present disclosure.

Fig. 5 is a view illustrating a specific example of

the elastic support section provided in the ship according

to the embodiment of the present disclosure.

Fig. 6 is a view illustrating a specific example of

the elastic support section provided in the ship according

to the embodiment of the present disclosure.

Fig. 7 is a view illustrating a specific example of

the elastic support section provided in the ship according

to the embodiment of the present disclosure.

Fig. 8 is a view illustrating a specific example of

the elastic support section provided in the ship according

to the embodiment of the present disclosure.

Fig. 9 is a sectional view illustrating a modification

example of the elastic support section provided in the ship

according to the embodiment of the present disclosure.

Fig. 10 is a sectional view illustrating another

modification example of the elastic support section provided

in the ship according to the embodiment of the present

disclosure.

Fig. 11 is a sectional view illustrating still another

modification example of the elastic support section provided

in the ship according to the embodiment of the present

disclosure.

Fig. 12 is a sectional view illustrating a

modification example in which an upper section of a tank

according to the embodiment of the present disclosure is

protruded upward from an upper deck.

Fig. 13 is a sectional view illustrating a

modification example in which the ship according to the

embodiment of the present disclosure includes a tank cover.

Fig. 14 is a plan view illustrating an overall

configuration of a ship according to a second embodiment of

the present disclosure.

Fig. 15 is a side view of the ship according to the

second embodiment of the present disclosure.

Fig. 16 is a sectional view perpendicular to the bow

stern direction of the ship according to the embodiment of

the present disclosure.

Fig. 17 is a sectional view illustrating a

modification example of the elastic support section provided

in the ship according to the embodiment of the present

disclosure.

Fig. 18 is a sectional view illustrating another

modification example of the elastic support section provided

in the ship according to the embodiment of the present

disclosure.

Fig. 19 is a sectional view illustrating still another

modification example of the elastic support section provided

in the ship according to the embodiment of the present

disclosure.

Fig. 20 is a plan view of Fig. 19.

Fig. 21 is a sectional view illustrating still another

modification example of the elastic support section provided

in the ship according to the embodiment of the present

disclosure.

Fig. 22 is a sectional view illustrating still another

modification example of the elastic support section provided

in the ship according to the embodiment of the present

disclosure.

Fig. 23 is a plan view illustrating another

disposition example of the tank in the ship according to

the embodiment of the present disclosure.

Fig. 24 is a plan view illustrating still another

disposition example of the tank in the ship according to

the embodiment of the present disclosure.

Description of Embodiments

[00091

Hereinafter, a ship according to embodiments of the

present disclosure will be described with reference to Figs.

1 to 24.

As illustrated in Figs. 1 and 2, a ship 1A of the

present embodiment carries a liquefied gas such as a

liquefied natural gas, a liquefied petroleum gas, and

liquefied carbon dioxide. The ship 1A includes at least a

hull 2, a tank 10A, a lower support section 20A, and an

elastic support section 30A.

[0010]

The hull 2 has a pair of broadsides 3A and 3B, a ship

bottom 4, and an upper deck (deck) 5, which form an outer shell of the hull 2. The broadsides 3A and 3B include a pair of broadside outer plates respectively forming right and left broadsides. The ship bottom 4 includes a ship bottom outer plate connecting the broadsides 3A and 3B. The pair of broadsides 3A and 3B and the ship bottom 4 cause the outer shell of the hull 2 to have a U-shape in a cross section perpendicular to a bow-stern direction Da. The upper deck 5 is a completely open deck exposed outward. In the hull 2, a superstructure 7 having an accommodation space is formed on the upper deck 5 on a stern 2b side.

[0011]

The hull 2 has a cargo tank storage compartment (hold)

8 on a bow 2a side of the superstructure 7. The cargo tank

storage compartment 8 is recessed toward the ship bottom 4

below the upper deck 5, and is open upward.

[0012]

A plurality of tanks 10A are disposed inside the cargo

tank storage compartment 8 along the bow-stern direction Da.

Each of the tanks 10A internally accommodates a liquefied

gas. In the present embodiment, the tanks 10A are provided

in two rows at an interval in a ship width direction Dw,

except for the tank 10A disposed closest to the bow 2a. A

case where only one tank 10A disposed closest to the bow 2a

is disposed at a center in the ship width direction Dw will

be described as an example.

[00131

In the present embodiment, each of the tanks 10A has

a cylindrical shape extending in the bow-stern direction Da.

As illustrated in Figs. 2 and 3, the tank 10A is a so-called

Bilobe type, and includes a first body section 11 and a

second body section 12.

[0014]

The first body section 11 is provided in a lower

section of the tank 10A. An accommodating space Si is

formed inside the first body section 11. The first body

section 11 has a shape similar to a cylindrical shape, and

extends in the bow-stern direction Da. The first body

section 11 includes an intermediate cylindrical section 11a

and an end spherical section lb. The intermediate

cylindrical section 11a is provided in an intermediate

section of the first body section 11 in the bow-stern

direction Da, and is formed in a shape similar to a

cylindrical shape continuous along the bow-stern direction

Da. The intermediate cylindrical section 11a has a constant

radius of curvature in the bow-stern direction Da. The end

spherical sections 11b are respectively provided in both

end sections of the intermediate cylindrical section 11a in

the bow-stern direction Da. Each of the end spherical

sections 11b has a hemispherical shape, and closes openings

in both ends of the intermediate cylindrical section 11a in the bow-stern direction Da. A diameter dimension of each of the end spherical sections lb gradually increases from one toward the other. Each of the end spherical sections lb has a hemispherical shape having a constant radius of curvature, and the hemispherical shape is partially illustrated.

[0015]

The second body section 12 is provided in an upper

section of the tank 10A. An accommodating space S2 is

formed inside the second body section 12. The second body

section 12 is provided above the first body section 11. The

second body section 12 has a cylindrical shape, and extends

in the bow-stern direction Da. The second body section 12

includes an intermediate cylindrical section 12a and an end

spherical section 12b. The intermediate cylindrical section

12a is provided in an intermediate section of the second

body section 12 in the bow-stern direction Da, and is formed

in a shape similar to a cylindrical shape continuous along

the bow-stern direction Da. The intermediate cylindrical

section 12a has a constant radius of curvature in the bow

stern direction Da. The end spherical sections 12b are

respectively provided in both end sections of the

intermediate cylindrical section 12a in the bow-stern

direction Da. Each of the end spherical sections 12b has a

hemispherical shape, and closes openings in both ends of the intermediate cylindrical section 12a in the bow-stern direction Da. A diameter dimension of each of the end spherical sections 12b gradually increases from one toward the other. Each of the end spherical sections 12b has a hemispherical shape having a constant radius of curvature, and the hemispherical shape is partially illustrated.

[0016]

A lower end section of the second body section 12 is

connected to an upper end section of the first body section

11. In the present embodiment, the lower end section of

the second body section 12 and the upper end section of the

first body section 11 are open in sections connected to each

other. in this manner, an accommodating space Si inside

the first body section 11 and an accommodating space S2

inside the second body section 12 communicate with each

other (communication section). The tank 10A may be provided

with a bulkhead (not illustrated) between the first body

section 11 and the second body section 12, and the

accommodating space S1 inside the first body section 11 and

the accommodating space S2 inside the second body section

12 may be partitioned.

[0017]

As illustrated in Fig. 2, a cross-sectional shape of

the tank 10A perpendicular to the bow-stern direction Da is

a vertically long shape in which an upward-downward direction Dv of the hull 2 is set as a longitudinal direction.

More specifically, in the tank 10A, the second body section

12 is provided on the first body section 11. In this manner,

in the cross section perpendicular to the bow-stern

direction Da, the tank 10A has a vertically long cross

sectional shape in which the upward-downward direction Dv

is set as the longitudinal direction, and the ship width

direction Dw is set as a short direction.

[0018]

A lower section of the first body section 11 disposed

below a center of the first body section 11 in the upward

downward direction Dv forms a bottom surface 10b of the tank

A. The lower section (bottom surface 10b) of the first

body section 11 of the tank 10A has a convex curved surface

shape whose dimension in the ship width direction Dw

gradually decreases downward from above. An upper section

of the second body section 12 disposed above a center of

the second body section 12 in the upward-downward direction

Dv forms an upper surface 12d of the tank 10A. The upper

section (upper surface 12d) of the second body section 12

of the tank 10A has a convex curved surface shape whose

dimension in the ship width direction Dw gradually decreases

upward from below.

[0019]

In addition, in the tank 10A, joint portions 10j

between the first body section 11 and the second body

section 12 are recessed inward in a width direction of the

tank 10A on both sides of the tank 10A in the width direction

(in other words, the ship width direction Dw).

[0020]

In the present embodiment, each of the tanks 10A is

provided below the upper deck 5. As illustrated in Figs. 1

and 3, transverse bulkheads 6 are provided on both sides in

the bow-stern direction Da with respect to each of the tanks

A. Each of the transverse bulkheads 6 is provided

perpendicular to the bow-stern direction Da. Each of the

transverse bulkheads 6 is formed to rise upward from the

bottom deck 8b forming the bottom surface of the cargo tank

storage compartment 8 between the pair of broadsides 3A and

3B. In the present invention, each of the transverse

bulkheads 6 is not always required, and can be omitted when

emergency measures are taken by separate means.

[0021]

As illustrated in Fig. 2, a bulkhead 9 is provided

between the tanks 10A adjacent to each other in the ship

width direction Dw. The bulkhead 9 is provided in a central

portion in the ship width direction Dw, and is provided

perpendicular to the ship width direction Dw. The bulkhead

9 is continuously formed in the bow-stern direction Da between the transverse bulkheads 6 on both sides of each of the tanks 10A in the bow-stern direction Da. Furthermore, the bulkhead 9 is provided between the bottom deck 8b forming the bottom surface of the cargo tank storage compartment 8 and the upper deck 5. The bulkhead 9 has a watertight structure, and partitions the cargo tank storage compartment 8 into two along the ship width direction Dw.

As will be described later, one end of the lateral elastic

support section 31A is connected to each of the bulkheads

9, but can be omitted when the connection is made by separate

means and emergency measures are taken by separate means.

[0022]

The respective tanks 10A are provided at an interval

between the broadsides 3A and 3B in the ship width direction

Dw. In addition, the tanks 10A adjacent to each other in

the ship width direction Dw are provided at an interval

between the tank 10A and the bulkhead 9 in the ship width

direction Dw.

[0023]

As illustrated in Fig. 3, the lower support section

A supports the tank 10A on the hull 2 from below. The

lower support section 20A described as an example in the

present embodiment includes two saddle type supports 21A

for one tank 10A. The saddle type supports 21A are provided

at an interval in the bow-stern direction Da for one tank

A. The saddle type supports 21A are disposed in both end

sections of the intermediate cylindrical section 11a of the

first body section 11 of the tank 10A in the bow-stern

direction Da. Each of the saddle type supports 21A is fixed

to the bottom deck 8b of the cargo tank storage compartment

8 of the hull 2.

[00241

As illustrated in Fig. 2, the saddle type support 21A

has rising sections 21a rising upward on both sides in the

ship width direction Dw. The saddle type support 21A has a

placement surface 21s between the rising sections 21a on

both sides in the ship width direction Dw. The placement

surface 21s has a concave curved surface shape along the

bottom surface 10b of the tank 10A. The first body section

11 of the tank 10A having the bottom surface 10b is placed

on the placement surface 21s.

[0025]

The elastic support section 30A elastically supports

the tank 10A with respect to the hull 2 above the lower

support section 20A.

As illustrated in Fig. 3, the elastic support sections

A in the present embodiment are provided at an interval

in two locations in the bow-stern direction Da. In addition,

as illustrated in Fig. 2, the elastic support section 30A

in the present embodiment includes a lateral elastic support section 31A and an upper elastic support section 32A in each location. In the present embodiment, the elastic support sections 30A may be provided in two or more locations in the bow-stern direction Da. In addition, when a shape of the tank 10A, for example, a length in the bow-stern direction Da is short, the elastic support section 30A may be provided in one location in the bow-stern direction Da.

[0026]

The lateral elastic support sections 31A are provided

on both sides of the second body section 12 provided in the

upper section of each of the tanks 10A in the ship width

direction Dw. With respect to each of the tanks 10A, the

lateral elastic support section 31A disposed outward in the

ship width direction Dw is provided between the broadside

3A or the broadside 3B on the hull 2 side and a side surface

12s of the second body section 12, which is a surface Fw

facing the ship width direction Dw in the upper section of

the tank 10A. In addition, the lateral elastic support

section 31A is also disposed inward in the ship width

direction Dw with respect to each of the tanks 10A. The

lateral elastic support section 31A disposed inward in the

ship width direction Dw is provided between the bulkhead 9

on the hull 2 side and a side surface 12t of the second body

section 12, which is the surface Fw facing the ship width

direction Dw in the upper section of the tank 10A.

[00271

The upper elastic support section 32A is provided on

an upper side of the second body section 12 of each of the

tanks 10A. The upper elastic support sections 32A are

respectively provided one by one on both sides in the ship

width direction while a top section 12c of the second body

section 12 is interposed therebetween. Each of the upper

elastic support sections 32A is provided between the upper

deck 5 on the hull 2 side and the second body section 12 of

the tank 10A.

[0028]

The upper elastic support section 32A disposed outward

in the ship width direction Dw with respect to each of the

tanks 10A extends to be inclined inward and downward from

above in the ship width direction Dw. The tip section 32s

of the upper elastic support section 32A disposed outward

in the ship width direction Dw is disposed outward in the

ship width direction Dw from the top section 12c with

respect to the second body section 12.

In addition, the upper elastic support section 32A

disposed inward in the ship width direction Dw with respect

to each of the tanks 10A extends to be inclined outward and

downward from above in the ship width direction Dw. The

tip section 32t of the upper elastic support section 32A

disposed inward in the ship width direction Dw is disposed inward in the ship width direction Dw from the top section

12c with respect to the second body section 12.

[0029]

That is, the tip sections 32s and 32t of the upper

elastic support section 32A are connected to a portion

inclined in both the upward-downward direction Dv and the

ship width direction Dw, on the upper surface 12d of the

second body section 12. In other words, the tip sections

32s and 32t of the upper elastic support section 32A are

connected to a position where the surface Fw facing the ship

width direction Dw and the surface Fu facing upward in the

upward-downward direction Dv overlap each other, in the

upper section of the tank 10A. In this way, the upper

elastic support section 32A is disposed across the upper

deck 5 on the hull 2 side and the upper section of the tank

A.

[0030]

As illustrated in Fig. 4, a coil spring 51 is used as

the elastic support member 50. In the coil spring 51, the

base end section 51a is connected to the hull 2 side

(broadsides 3A and 3B, bulkhead 9, and upper deck 5) via a

fixing member 56A. The tip section 51b of the coil spring

51 is connected to the second body section 12 of the tank

A via a fixing member 56B. The coil spring 51 is

elastically deformable in a direction in which the base end section 51a and the tip section 51b come into contact with and are separated from each other, and is provided in a compressed state between the hull 2 side and the tank 10A.

[0031]

In addition, as illustrated in examples in Figs. 5 to

8, the coil spring 51 can be replaced with another member.

As illustrated in Fig. 5, a leaf spring 52 can be used

as the elastic support member 50. A base end section 52a

of the leaf spring 52 is connected to the hull 2 side

(broadsides 3A and 3B, bulkhead 9, and upper deck 5) via

the fixing member 56A. A tip section 52b of the leaf spring

52 is connected to the second body section 12 of the tank

A via the fixing member 56B. The leaf spring 52 has a

curved section 52c curved in a U-shape or a V shape between

the base end section 52a and the tip section 52b, and is

elastically deformable in a direction in which the base end

section 52a and the tip section 52b come into contact with

and are separated from each other. The leaf spring 52 is

provided in a compressed state between the hull 2 side and

the tank 10A.

[0032]

In addition, as illustrated in Fig. 6, as the elastic

support member 50, an elastic body 53 formed of rubber or a

resin can be used. A base end section 53a of the elastic

body 53 is connected to the hull 2 side (broadsides 3A and

3B, bulkhead 9, upper deck 5) via a fixing member 57A. A

tip section 53b of the elastic body 53 is connected to the

second body section 12 of the tank 10A via a fixing member

57B. The elastic body 53 is elastically deformable in a

direction in which the base end section 53a and the tip

section 53b come into contact with and are separated from

each other. The elastic body 53 is provided in a compressed

state between the hull 2 side and the tank 10A.

[00331

In addition, as illustrated in Fig. 7, as the elastic

support member 50, an elastic body 54 formed of rubber or a

resin can be used. A base end section 54a of the elastic

body 54 is connected to the hull 2 side (broadsides 3A and

3B, bulkhead 9, upper deck 5) via a fixing member 57A. A

tip section 54b of the elastic body 54 abuts against the

second body section 12 of the tank 10A. The elastic body

54 is elastically deformable in a direction in which the

base end section 54a and the tip section 54b come into

contact with and are separated from each other. The elastic

body 54 is provided in a compressed state between the hull

2 side and the tank 10A, and even when the tank 10A is

thermally shrunk, the elastic body 54 is provided to

maintain a state where the tip section 54b abuts against

the second body section 12.

[00341

In addition, as illustrated in Fig. 8, a damper 55 can

be used as the elastic support member 50. A base end section

a of the damper 55 is connected to the hull 2 side

(broadsides 3A and 3B, bulkhead 9, upper deck 5) via the

fixing member 56A. A tip section 55b of the damper 55 is

connected to the second body section 12 of the tank 10A via

the fixing member 56B. The damper 55 includes a cylinder

c provided in the base end section 55a and internally

filled with a compressible fluid such as air, and a piston

d provided in the tip section 55b. The piston 55d moves

inside the fluid of the cylinder 55c when the base end

section 55a and the tip section 55b come into contact with

and are separated from each other. When the piston 55d

moves inside the fluid of the cylinder 55c, the damper 55

generates a damping force. In addition, the damper 55

generates an elastic force resulting from the compressible

fluid in response to a sudden input. In this manner, the

damper 55 elastically supports the upper section of the tank

A with respect to the hull 2. A damper using an

incompressible fluid and an elastic member such as a spring

may be used in combination.

[00351

The ship 1A of the above-described first embodiment

includes the tank 10A having a cross-sectional shape

perpendicular to the bow-stern direction Da in which the upward-downward direction Dv is set as the longitudinal direction, and the elastic support section 30A that elastically supports the tank 10A with respect to the hull

2 above the lower support section 20A.

In the ship 1A, the upper section of the tank 10A

having a so-called vertically long cross-sectional shape,

the cross-sectional shape perpendicular to the bow-stern

direction Da in which the upward-downward direction Dv is

set as the longitudinal direction, is supported by the

elastic support section 30A. Therefore, the tank 10A having

a so-called vertically long cross-sectional shape can be

more stably supported by the elastic support section 30A.

[00361

In the tank 10A of the ship 1A of the above-described

first embodiment, the bottom surface 10b has a convex curved

surface shape protruding downward. The lower support

section 20A has a concave curved surface shape along the

bottom surface 10b of the tank 10A, and has the placement

surface 21s on which the bottom surface 10b of the tank 10A

is placed.

In the ship 1A configured in this way, the tank 10A is

placed on the placement surface 21s, and the tank 10A is

not fixed to the lower support section 20A. However, even

when a portion above the lower support section 20A tries to

be displaced due to a large vibration of the ship 1A, the elastic support section 30A suppresses a possibility that the portion above the lower support section 20A may be displaced. Therefore, the tank 10A can be stably supported.

[00371

In the ship 1A of the above-described first embodiment,

the elastic support section 30A is provided between the hull

2 side and the surface Fw facing the ship width direction

Dw, in the upper section of the tank 10A.

In this manner, it is possible to suppress a

possibility that the portion above the lower support section

A in the tank 10A may be displaced in the ship width

direction Dw.

[00381

In the ship 1A of the above-described first embodiment,

the elastic support section 30A is provided between the hull

2 side and the surface Fu facing upward in the upper section

of the tank 10A.

In this manner, it is possible to suppress a

possibility that the portion above the lower support section

A in the tank 10A may be displaced in the upward-downward

direction Dv.

[00391

In the ship 1A of the above-described first embodiment,

the elastic support section 30A is fixed to the broadsides

3A and 3B of the hull 2, the upper deck 5, and the bulkhead

9.

In this manner, displacement of the tank 10A can be

received on the hull 2 side via the elastic support section

A.

[0040]

In the ship 1A of the above-described first embodiment,

the elastic support section 30A is provided in a compressed

state between the hull 2 side and the tank 10A.

In this manner, even when a low-temperature liquefied

gas is accommodated inside the tank 10A and the tank 10A is

thermally shrunk, the elastic support section 30A in the

compressed state is stretched, and a state of elastically

supporting the tank 10A can be maintained.

[0041]

Hitherto, the first embodiment of the present

disclosure has been described in detail with reference to

the drawings. However, specific configurations are not

limited to the embodiment, and design changes within the

scope not departing from the concept of the present

disclosure are also included.

In the above-described embodiment, the elastic support

sections 30A are provided in two locations at an interval

in the bow-stern direction Da. However, the present

disclosure is not limited thereto. The elastic support section 30A may be provided only in one location in the bow stern direction Da. In addition, the elastic support sections 30A may be provided in three or more locations at an interval in the bow-stern direction Da. In addition, as illustrated in Fig. 9, the elastic support sections 30A may be continuously provided along the bow-stern direction Da.

In addition, when the shape of the tank 10A, for example,

the length in the bow-stern direction Da is relatively short,

the elastic support section 30A may be provided at one

installation position in the bow-stern direction Da.

[00421

In addition, in the first embodiment, one end of the

lateral elastic support section 31A is connected to the side

surface 12s of the second body section 12 which is the

surface Fw facing the ship width direction Dw in the upper

section of the tank 10A. However, the present disclosure

is not limited thereto. Depending on the shape of the tank

A, one end of the lateral elastic support section 31A may

be connected to a side surface (not illustrated) of the

first body section 11 which is a surface (not illustrated)

facing the ship width direction Dw in the lower section of

the tank 10A. For example, this corresponds to a case where

the first body section 11 is larger than the second body

section 12, and a case where the center of gravity of the tank 10A is located sufficiently below the position of the second body section 12.

Furthermore, a connection position of the lateral

elastic support section 31A with respect to each of the

tanks 10A is not limited only to the surface facing the ship

width direction Dw in the upper section or the lower section

of the tank 10A. The elastic support section 30A may be

installed to suppress a possibility that the portion above

the lower support section 20A may be displaced due to the

vibration in the ship 1A. Therefore, for example, the

elastic support section 30A may be installed on a surface

facing downward in the upward-downward direction Dv in the

upper section of the tank 10A.

[0043]

In addition, in the first embodiment, the upper

elastic support sections 32A are respectively provided on

both sides in the ship width direction while the top section

12c of the second body section 12 is interposed therebetween.

However, the present disclosure is not limited thereto.

For example, as illustrated in Fig. 10, the upper

elastic support section 32A may be provided between the top

section 12c of the second body section 12 and the upper deck

5. In this manner, the upper elastic support section 32A

is provided between the upper deck 5 on the hull 2 side and the surface Fu (top section 12c of the second body section

12) facing upward in the upper section of the tank 10A.

In addition, as illustrated in Fig. 11, the upper

elastic support sections 32A may be provided in three or

more locations at an interval in the ship width direction

Dw (circumferential direction of the second body section

12).

[0044]

In addition, in the first embodiment, the elastic

support section 30A includes the lateral elastic support

section 31A and the upper elastic support section 32A.

However, the present disclosure is not limited thereto. The

elastic support section 30A may include at least one of the

lateral elastic support section 31A and the upper elastic

support section 32A.

[0045]

In addition, in the first embodiment, the elastic

support section 30A is installed in the compressed state.

However, the present disclosure is not limited thereto.

When the elastic support section 30A acts to suppress a

possibility that the portion above the lower support section

A may be displaced due to the vibration in the ship 1A

within a range of elastic deformation of the elastic support

section 30A, for example, the elastic support section 30A

may be installed in a tensile state.

[00461

In addition, in the first embodiment, a plurality of

members of the elastic support member 50 have been described

as an example. However, the present disclosure is not

limited thereto. Other members that enables elastic support

may be used. In addition, the plurality of elastic support

members may be configured in combination.

[0047]

In addition, in the first embodiment, the tank 10A is

not fixed to the lower support section 20A. However, the

present disclosure is not limited thereto. A disposition

status of the tank 10A on the placement surface 21s is not

limited to the above-described form. For example, in the

plurality of lower support sections 20A, for example, the

tank 10A may be fixed to the placement surface 21s in one

location thereof. In this case, various pipes can be stably

fixed in the vicinity of the fixed position.

[0048]

In addition, in the first embodiment, the tank 10A is

provided on the lower side of the upper deck 5. However,

the present disclosure is not limited thereto.

For example, as illustrated in Fig. 12, the upper

section of the tank 10A may be provided to protrude upward

from the upper deck 5. In this case, the elastic support

section 30B may include only the lateral elastic support section 31B. For example, the lateral elastic support section 31B may be provided between an opening 5h formed in the upper deck 5 and the upper section of the tank 10A. The lateral elastic support section 31B has a configuration the same as that of the lateral elastic support section 31A.

[0049]

As illustrated in Fig. 13, a tank cover 15 that covers

the upper section of the tank 10A may be provided above the

tank 10A protruding upward from the upper deck 5. In this

configuration, the upper elastic support section 32C of the

elastic support section 30A is provided between the tank

cover 15 on the hull 2 side and the second body section 12

of the tank 10A.

[0050]

Next, a second embodiment of a ship according to the

present invention will be described. The second embodiment

described below is mainly different from the first

embodiment in only a configuration of a tank 10D. Therefore,

description will be made by assigning the same reference

numerals to elements which are the same as those of the

first embodiment, and repeated description will be omitted.

As illustrated in Figs. 14 to 16, a ship 1D of the

second embodiment includes at least the hull 2, the tank

D, a lower support section 20D, and an elastic support

section 30D.

[0051]

The tank 10D internally accommodates a liquefied gas.

A plurality of the tanks 10D are disposed inside the cargo

tank storage compartment 8 along the bow-stern direction Da.

In the second embodiment, the tanks 10D are provided in two

rows at an interval in the ship width direction Dw, except

for the two tanks 10D disposed closest to the bow 2a side.

[0052]

As illustrated in Figs. 15 and 16, in the second

embodiment, each of the tanks 10D has a cylindrical shape

extending in the upward-downward direction Dv. The tank

D includes a cylindrical section lop, a lower

hemispherical section 10q, and an upper hemispherical

section 10r. The cylindrical section lOp has a cylindrical

shape extending in the upward-downward direction Dv. The

lower hemispherical section 10q is continuously provided on

the lower side of the cylindrical section lOp. The lower

hemispherical section 10q has a convex curved surface shape

in which the respective dimensions in the ship width

direction Dw and the bow-stern direction Da gradually

decrease downward from above. The upper hemispherical

section 1Cr is continuously provided on the upper side of

the cylindrical section lOp. The upper hemispherical section 1Cr has a convex curved surface shape in which the respective dimensions in the ship width direction Dw and the bow-stern direction Da gradually decrease upward from below. Each shape of the upper hemispherical section 1Cr and the lower hemispherical section 10q is a hemispherical shape having a constant radius of curvature, and the hemispherical shape is partially illustrated. Both do not need to have the same shape.

[00531

In the second embodiment, each of the tanks 10D is

provided on the lower side of the upper deck 5. As

illustrated in Fig. 15, a plurality of transverse bulkheads

6 are provided inside the cargo tank storage compartment 8

of the hull 2 at an interval in the bow-stern direction Da.

The tanks 10D are aligned two by two, and are disposed in

the bow-stern direction Da between the transverse bulkheads

6 located on the mutually front and rear side in the bow

stern direction Da. As illustrated in Fig. 14, the bulkhead

9 is provided between the tanks 10D adjacent to each other

in the ship width direction Dw.

In the present invention, each of the transverse

bulkheads 6 is not always required, and can be omitted when

emergency measures are taken by separate means. As will be

described later, one end of the lateral elastic support

section 31D is connected to each of the bulkheads 9, but can be omitted when the connection is made by separate means and emergency measures are taken by separate means.

[00541

As illustrated in Fig. 16, the respective tanks 10D

are provided between the broadsides 3A and 3B at an interval

in the ship width direction Dw. In addition, the respective

tanks 10D are provided between the tanks 10D and the

bulkhead 9 at an interval in the ship width direction Dw.

[00551

The lower support section 20D supports each of the

tanks 10D on the hull 2 from below. The lower support

section 20D is fixed to the bottom deck 8b of the cargo tank

storage compartment 8 of the hull 2. An outer peripheral

section of the lower support section 20D has a rising

section 21b that rises upward. The lower support section

D has a placement surface 21t located inward in the radial

direction of the rising section 21b. The placement surface

21t has a concave curved surface shape along the bottom

surface of the tank 10D. The lower hemispherical section

q having the bottom surface of the tank 10D is placed on

the placement surface 21t.

[00561

The elastic support section 30D elastically supports

the tank 10D with respect to the hull 2 above the lower

support section 20D. In the second embodiment, the elastic support section 30D includes a lateral elastic support section 31D and an upper elastic support section 32D.

[00571

The lateral elastic support sections 31D are provided

on both sides of the cylindrical section 10p in the upper

section of each of the tanks 10D in the ship width direction

Dw. With respect to each of the tanks 10D, the lateral

elastic support section 31D disposed outward in the ship

width direction Dw is provided between the broadside 3A or

the broadside 3B on the hull 2 side and the side surface

s of the cylindrical section 10p which is the surface Fw

facing the ship width direction Dw in the upper section of

the tank 10D. In addition, the lateral elastic support

section 31D is also disposed inward in the ship width

direction Dw with respect to each of the tanks 10D. The

lateral elastic support section 31D disposed inward in the

ship width direction Dw is provided between the bulkhead 9

on the hull 2 side and the side surface 10t of the

cylindrical section 10p which is the surface Fw facing the

ship width direction Dw in the upper section of the tank

D.

[00581

The upper elastic support section 32D is provided on

the upper side of the upper hemispherical section 1Cr

provided in the upper section of each of the tanks 10D. The upper elastic support sections 32D are respectively provided on both sides in the ship width direction while a top section m of the upper hemispherical section 1Cr is interposed therebetween. Each of the upper elastic support sections

32D is provided between the upper deck 5 on the hull 2 side

and the upper hemispherical section 1Cr of the tank 10D.

[00591

The upper elastic support section 32D disposed outward

in the ship width direction Dw with respect to each of the

tanks 10D extends to be inclined inward and downward from

above in the ship width direction Dw. The tip section 32s

of the upper elastic support section 32D disposed outward

in the ship width direction Dw is disposed outward in the

ship width direction Dw with respect to the top section 10m

of the upper hemispherical section 10r.

In addition, the upper elastic support section 32D

disposed inward in the ship width direction Dw with respect

to each of the tanks 10D extends to be inclined outward and

downward from above in the ship width direction Dw. The

tip section 32t of the upper elastic support section 32D

disposed inward in the ship width direction Dw is disposed

inward in the ship width direction Dw with respect to the

top section 10m of the upper hemispherical section 10r.

[0060

That is, the tip sections 32s and 32t of the upper

elastic support section 32D are connected to a portion

inclined to both the upward-downward direction Dv and the

ship width direction Dw, on the upper surface of the second

body section 12. In other words, the tip sections 32s and

32t of the upper elastic support section 32D are connected

to a position where the surface Fw facing the ship width

direction Dw and the surface Fu facing upward in the upward

downward direction Dv overlap each other, in the upper

section of the tank 10D. In this way, the upper elastic

support section 32D is disposed across the upper deck on

the hull 2 side and the upper section of the tank 10D.

[0061]

The lateral elastic support section 31D and the upper

elastic support section 32D which form the elastic support

section 30D are respectively formed by using the elastic

support member 50. As in the above-described first

embodiment, the elastic support member 50 includes the coil

spring 51 (refer to Fig. 4), the leaf spring 52 (refer to

Fig. 5), the elastic body 53 formed of rubber or a resin

(refer to Fig. 6), the elastic body 54 (refer to Fig. 7),

and the damper 55 (refer to Fig. 8). In addition, the

elastic support member may be configured to include a

plurality of members in combination.

[0062]

The ship 1D of the above-described second embodiment

includes the tank 10D having a cross-sectional shape

perpendicular to the bow-stern direction Da in which the

upward-downward direction Dv is set as the longitudinal

direction, and the elastic support section 30D that

elastically supports the tank 10D with respect to the hull

2 above the lower support section 20D.

In the ship 1D, the tank 10D supported from below by

the lower support section 20D is elastically supported with

respect to the hull 2 by the elastic support section 30D

above the lower support section 20D. In this manner, the

upper section of the tank 10D having a so-called vertically

long cross-sectional shape, the cross-sectional shape

perpendicular to the bow-stern direction Da in which the

upward-downward direction Dv is set as the longitudinal

direction, can be supported by the elastic support section

D. Therefore, the tank 10D can be more stably supported.

[00631

In the tank 10D of the ship 1D of the above-described

second embodiment, the lower hemispherical section 10q

forming the bottom surface has a convex curved surface shape

protruding downward. The lower support section 20D has a

concave curved surface shape along the bottom surface of

the tank 10D, and has the placement surface 21t on which

the bottom surface of the tank 10D is placed. In this ship

1D, the tank 10D is placed on the placement surface 21t,

and is not fixed to the lower support section 20D. Therefore,

in some cases, the portion above the lower support section

D may try to be displaced due to a large vibration of the

ship 1D. However, the elastic support section 30D

suppresses a possibility that the portion above the lower

support section 20D may be displaced. Therefore, the tank

D can be stably supported.

[0064]

In the ship 1D of the above-described second

embodiment, the elastic support section 30D is provided

between the hull 2 side and the surface Fw facing the ship

width direction Dw in the upper section of the tank 10D.

In this manner, it is possible to suppress a

possibility that the portion above the lower support section

D in the tank 10D may be displaced in the ship width

direction Dw.

[0065]

In the ship 1D of the above-described second

embodiment, the elastic support section 30D is provided

between the hull 2 side and the surface Fu facing upward in

the upper section of the tank 10D.

In this manner, it is possible to suppress a

possibility that the portion above the lower support section

D in the tank 10D may be displaced in the upward-downward

direction Dv.

[00661

In the ship 1D of the above-described second

embodiment, the elastic support section 30D is fixed to the

broadsides 3A and 3B of the hull 2, the upper deck 5, and

the bulkhead 9.

In this manner, displacement of the tank 10D can be

received on the hull 2 side via the elastic support section

D.

[0067]

In the ship 1D of the above-described second

embodiment, the elastic support section 30D is provided in

a compressed state between the hull 2 side and the tank 10D.

In this manner, even when the low-temperature

liquefied gas is accommodated inside the tank 10D and the

tank 10D is thermally shrunk, the elastic support section

D in the compressed state is stretched, and a state of

elastically supporting the tank 10D can be maintained.

[00681

In the ship 1D of the above-described second

embodiment, the tank 10D has a cylindrical shape extending

in the upward-downward direction Dv.

In this manner, it is possible to stably support the

tank 10D having a vertically long cross-sectional shape, the cross-sectional shape perpendicular to the bow-stern direction Da in which the upward-downward direction Dv is set as the longitudinal direction. Since the tank 10D has a vertical cross-sectional shape in this way, capacity of the tank 10D in the ship 1D can be efficiently increased.

[00691

Hitherto, the second embodiment of the present

disclosure has been described in detail with reference to

the drawings. However, specific configurations are not

limited to the embodiment, and design changes within the

scope not departing from the concept of the present

disclosure are also included.

In the above-described embodiment, the upper elastic

support sections 32D are respectively provided on both sides

in the ship width direction Dw while the top section 10 m

of the upper hemispherical section 1Cr is interposed

therebetween. However, the present disclosure is not

limited thereto. For example, as illustrated in Fig. 17,

the upper elastic support section 32D may be provided

between the top section 10 m of the upper hemispherical

section 1Cr and the upper deck 5. In this manner, the upper

elastic support section 32D is provided between the upper

deck 5 on the hull 2 side and the surface Fu (top section

m of the upper hemispherical section 10r) facing upward

in the upper section of the tank 10D.

[00701

In addition, as illustrated in Fig. 18, the upper

elastic support section 32D may be located at a lateral

position in the ship width direction Dw with respect to the

top section 10 m of the upper hemispherical section 10r,

and at a position deviated from the top section 10 m of the

upper hemispherical section 1Cr in the bow-stern direction

Da. In this manner, the upper elastic support section 32D

is provided among the upper deck 5 on the hull 2 side, the

surface Fu facing upward in the upper section of the tank

D, and the surface Fa facing the bow-stern direction Da

in the upper section of the tank 10A.

[0071]

In addition, the upper elastic support sections 32D

may be provided in three or more locations at an interval

in the circumferential direction of the upper hemispherical

section 10r. For example, as illustrated in Figs. 19 and

, the upper elastic support sections 32D may be provided

in three locations at an equal interval in the

circumferential direction of the upper hemispherical

section 10r. In this case, the upper elastic support

section 32D is provided among the upper deck 5 on the hull

2 side, the surface Fu facing upward in the upper section

of the tank 10D, the surface Fw facing the ship width

direction Dw in the upper section of the tank 10A, and the surface Fa facing the bow-stern direction Da in the upper section of the tank 10A.

[00721

In addition, in the second embodiment, the lateral

elastic support sections 31D are respectively provided on

both sides in the ship width direction Dw while the

cylindrical section 10p is interposed therebetween. However,

the present disclosure is not limited thereto.

For example, as illustrated in Fig. 21, the lateral

elastic support sections 31D may be provided on both sides

in the bow-stern direction Da while the cylindrical section

p is interposed therebetween. In this case, the lateral

elastic support section 31D may be disposed to be interposed

between the transverse bulkheads 6 adjacent to each other

in the bow-stern direction Da and between the tanks 10D

adjacent to each other.

In addition, as illustrated in Fig. 22, the support

member 16 extending in the ship width direction Dw may be

provided between the transverse bulkheads 6 adjacent to each

other in the bow-stern direction Da and between the tanks

D adjacent to each other. The lateral elastic support

sections 31D may be respectively provided between the

support members 16 facing each other in the bow-stern

direction Da and the respective tanks 10D.

[0073]

In addition, in the second embodiment, the elastic

support section 30D includes the lateral elastic support

section 31D and the upper elastic support section 32D.

However, the present disclosure is not limited thereto. The

elastic support section 30D may include at least one of the

lateral elastic support section 31D and the upper elastic

support section 32D.

[0074]

In addition, in the second embodiment, the tank 10D is

not fixed to the lower support section 20D. However, the

present disclosure is not limited thereto. A disposition

status of the tank 10A on the placement surface 21t is not

limited to the above-described form. For example, in the

plurality of lower support sections 20D, for example, the

tank 10A may be fixed to the placement surface 21s in one

location thereof. In this case, various pipes can be stably

fixed in the vicinity of the fixed position.

[0075]

In addition, in the second embodiment, the elastic

support section 30A is installed in a compressed state.

However, the present disclosure is not limited thereto.

When the elastic support section 30A acts to suppress a

possibility that the portion above the lower support section

A may be displaced due to the vibration in the ship 1A

within a range of elastic deformation of the elastic support section 30A, for example, the elastic support section 30A may be installed in a tensile state.

[0076]

In addition, in the second embodiment, the tank 10D is

provided on the lower side of the upper deck 5. However,

the present disclosure is not limited thereto.

For example, as in the modification example of the

above-described first embodiment illustrated in Fig. 12,

the upper section of the tank 10D may be provided to protrude

upward from the upper deck 5.

In addition, as in the modification example of the

above-described first embodiment illustrated in Fig. 13,

the tank cover 15 covering the upper section of the tank

D may be provided above the tank 10D protruding upward

from the upper deck 5.

[0077]

In the above-described second embodiment, the tanks

D are provided in two rows at an interval in the ship

width direction Dw. However, the present disclosure is not

limited thereto.

For example, as illustrated in Fig. 23, the tank 10D

may be provided in only one row in the center in the ship

width direction Dw, for example. In other words, the

plurality of tanks 10D may be disposed in series at an

interval in the bow-stern direction Da.

[00781

In addition, as illustrated in Fig. 24, disposition in

a so-called staggered pattern may be used as follows. The

plurality of tanks 10D are disposed at an interval in the

bow-stern direction Da, and the tanks 10D adjacent to each

other in the bow-stern direction Da are alternately disposed

on the first side in the ship width direction Dw and on the

second side in the ship width direction Dw. In a case of

the configurations illustrated in Figs. 23 and 24, as in

the above-described second embodiment, the elastic support

section 30D may be provided with respect to each of the

tanks 10D.

[0079]

Alternatively, in the above-described respective

embodiments, the lower support sections 20A and 20D that

support the tanks 10A and 10D from below are provided.

However, the lower support section may be a deck forming

the bottom surface of a skirt or a hold. That is, for

example, the present disclosure includes a configuration in

which a square tank is simply placed on the deck.

In addition, the tanks 10A and 10D may be provided

below the deck other than the upper deck 5.

[00801

The ships 1A and 1D described in the respective

embodiments can be understood as follows, for example.

[0081]

(1) The ships 1A and 1D according to a first aspect

include the hull 2, the tanks 10A and 10D installed on the

hull 2, filled with the liquefied gas, and having the cross

sectional shape perpendicular to the bow-stern direction Da

in which the upward-downward direction Dv is set as the

longitudinal direction, the lower support sections 20A and

D that support the tanks 10A and 10D on the hull 2 from

below, and the elastic support sections 30A, 30B, and 30D

that elastically support the tanks 10A and 10D with respect

to the hull 2 above the lower support sections 20A and 20D.

Examples of the elastic support sections 30A, 30B, and

D include the coil spring 51, the leaf spring 52, the

elastic bodies 53 and 54 formed of rubber or a resin, and

the damper 55.

[0082]

In the ships 1A and 1D, the tanks 10A and 10D supported

from below by the lower support sections 20A and 20D are

elastically supported with respect to the hull 2 by the

elastic support sections 30A, 30B, and 30D above the lower

support sections 20A and 20D. In this manner, the upper

section of the tanks 10A and 10D having a so-called

vertically long cross-sectional shape having the cross sectional shape perpendicular to the bow-stern direction Da in which the upward-downward direction Dv is set as the longitudinal direction can be stably supported by the elastic support sections 30A, 30B, and 30D. Therefore, the tanks 10A and 10D can be more stably supported.

[00831

(2) In the ships 1A and 1D according to a second aspect,

which are the ships 1A and 1D according to (1), the tanks

A and 10D have a convex curved surface shape whose bottom

surface 10b protrudes downward. The lower support sections

A and 20D have a concave curved surface shape along the

bottom surface 10b of the tanks 10A and 10D, and have the

placement surfaces 21s and 21t on which the bottom surface

b of the tanks 10A and 10D are placed.

[0084]

The tanks 10A and 10D in which the bottom surface 10b

having the convex curved surface shape is placed on the

placement surfaces 21s and 21t having the concave curved

surface shape are not fixed to the lower support sections

A and 20D, and the portion above the lower support

sections 20A and 20D may try to be displaced due to the

large vibration of the ships 1A and 1D, in some cases. The

tanks 10A and 10D configured in this way are supported by

the elastic support sections 30A, 30B, and 30D above the lower support sections 20A and 20D. In this manner, the tanks 10A and 10D can be stably supported.

[00851

(3) In the ships 1A and 1D according to a third aspect,

which are the ships 1A and 1D according to (1) or (2), the

elastic support sections 30A, 30B, and 30D are provided

between the hull 2 side and the surface Fa facing the bow

stern direction Da in the upper section of the tanks 10A

and 10D.

[00861

In this manner, in the tanks 10A and 10D, it is

possible to suppress a possibility that the portion above

the lower support sections 20A and 20D may be displaced in

the bow-stern direction Da.

[00871

(4) In the ships 1A and 1D according to a fourth aspect,

which are the ships 1A and 1D according to any one of (1)

to (3), the elastic support sections 30A and 30D are

provided between the hull 2 side and the surface Fw facing

the ship width direction Dw in the upper section of the

tanks 10A and 10D.

[00881

In this manner, it is possible to suppress a

possibility that the portion above the lower support sections 20A and 20D in the tanks 10A and 10D may be displaced in the ship width direction Dw.

[00891

(5) In the ships 1A and 1D according to a fifth aspect,

which are the ships 1A and 1D according to any one of (1)

to (4), the elastic support sections 30A and 30D are

provided between the hull 2 side and the surface Fu facing

upward in the upper section of the tanks 10A and 10D.

[00901

In this manner, it is possible to suppress a

possibility that the portion above the lower support

sections 20A and 20D in the tanks 10A and 10D may be

displaced in the upward-downward direction Dv.

[0091]

(6) In the ships 1A and 1D according to a sixth aspect,

which are the ships 1A and 1D according to any one of (1)

to (5), the elastic support sections 30A and 30D are fixed

to at least one of the broadsides 3A and 3B of the hull 2,

the deck 5 provided on the hull 2 and above the tanks 10A

and 10D, the tank cover 15 provided on the hull 2 and

covering the section above the tanks 10A and 10D, and the

bulkheads 9 provided on the hull 2 and partitioning the

inside of the hull 2 in the ship width direction Dw or the

bow-stern direction Da.

Examples of the deck provided above the tanks 10A and

D include the upper deck 5, and decks other than the upper

deck 5.

[0092]

In this manner, the elastic support sections 30A, 30B,

and 30D are fixed to at least one of the broadsides 3A and

3B, the deck 5, the tank cover 15, and the bulkhead 9. In

this manner, displacement of the tanks 10A and 10D can be

received on the hull 2 side via the elastic support section

A, 30B, and 30D.

[0093]

(7) In the ships 1A and 1D according to a seventh

aspect, which are the ships 1A and 1D according to any one

of (1) to (6), the elastic support sections 30A, 30B, and

D are provided in a compressed state between the hull 2

side and the tanks 10A and 10D.

[0094]

In this manner, even when the low-temperature

liquefied gas is accommodated inside the tanks 10A and 10D

and the tanks 10A and 10D are thermally shrunk, the elastic

support sections 30A, 30B, and 30D in a compressed state or

a tensile state are stretched, and a state of elastically

supporting the tanks 10A and 10D can be maintained.

[0095]

(8) In the ships 1A and 1D according to an eighth

aspect, which are the ships 1A and 1D according to any one

of (1) to (7), the tanks 10A and 10D include the first body

section 11 extending in the bow-stern direction Da, and the

second body section 12 provided above the first body section

11, extending in the bow-stern direction Da, and connected

to the first body section 11.

[00961

In this manner, it is possible to stably support the

tanks 10A and 10D having a vertically long cross-sectional

shape, the cross-sectional shape perpendicular to the bow

stern direction Da in which the upward-downward direction

Dv is set as the longitudinal direction. Since the tanks

A and 10D having the vertical cross-sectional shape in

this way, capacity of the tanks 10A and 10D in the ships 1A

and 1D can be efficiently increased.

[0097]

(9) In the ship 1D according to a ninth aspect, which

are the ships 1A and 1D according to any one of (1) to (8),

the tank 10D has a cylindrical shape extending in the

upward-downward direction Dv.

[00981

In this manner, since the cylindrical tank 10D

extending in the upward-downward direction Dv is provided,

capacity of the tank 10D in the ship 1D can be efficiently increased. When the tank 10D having the cross-sectional shape in this way is provided, the tank 10D can be stably supported.

Industrial Applicability

[00991

According to the ship of the present disclosure, the

tank can be supported more stably.

Reference Signs List

[0100]

Throughout this specification and the claims which

follow, unless the context requires otherwise, the word

"comprise", and variations such as "comprises" and

"comprising", will be understood to imply the inclusion of

a stated integer or step or group of integers or steps but

not the exclusion of any other integer or step or group of

integers or steps.

[0101]

The reference in this specification to any prior

publication (or information derived from it), or to any

matter which is known, is not, and should not be taken as an

acknowledgment or admission or any form of suggestion that

that prior publication (or information derived from it) or

known matter forms part of the common general knowledge in

the field of endeavour to which this specification relates.

[0102]

1A, 1D: Ship

2: Hull

2a: Bow

2b: Stern

3A, 3B: Broadside

4: Ship bottom

: Upper deck (deck)

h: Opening

6: Transverse bulkhead

7: Superstructure

8: Cargo tank storage compartment

8b: Bottom section deck

9: Bulkhead

A, 10D: Tank

b: Bottom surface

j: Joint portion

m: Top section

p: Cylindrical section

q: Lower hemispherical section

r: Upper hemispherical section

s, 10t: Side surface

11: First body section

11a: Intermediate cylindrical section

lb: End spherical section

12: Second body section

12a: Intermediate cylindrical section

12b: End spherical section

12c: Top section

12s, 12t: Side surface

: Tank cover

16: Support member

A, 20D: Lower support section

21A: Saddle type support

21a, 21b: Rising section

21s, 21t: Placement surface

A, 30B, 30D: Elastic support section

31A, 31B, 31D: Lateral elastic support section

32A, 32C, 32D: Upper elastic support section

32s, 32t: Tip section

: Elastic support member

51: Coil spring

51a: Base end section

51b: Tip section

52: Leaf spring

52a: Base end section

52b: Tip section

52c: Curved section

53: Elastic body

53a: Base end section

53b: Tip section

54: Elastic body

54a: Base end section

54b: Tip section

: Damper

a: Base end section

b: Tip section

c: Cylinder

d: Piston

56A, 56B, 57A, 57B: Fixing member

Da: Bow-stern direction

Dv: Upward-downward direction

Dw: Ship width direction

Fa: Surface facing bow-stern direction

Fu: Surface facing upward

Fw: Surface facing ship width direction

51, S2: Accommodating space

Claims

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:

[Claim 1]

A ship comprising:

a hull;

a tank installed on the hull, filled with a liquefied

gas, and having a cross-sectional shape perpendicular to a

bow-stern direction in which an upward-downward direction

is set as a longitudinal direction;

a lower support section that supports the tank on the

hull from below; and

an elastic support section that elastically supports

the tank with respect to the hull above the lower support

section,

wherein the tank includes

a first cylindrical section extending in the bow-stern

direction,

a second cylindrical section provided above the first

cylindrical section, extending in the bow-stern direction,

and connected to the first cylindrical section, and

a communication section through which the first

cylindrical section and the second cylindrical section

communicate with each other.
[Claim 2]

The ship according to Claim 1,

wherein the tank has a convex curved surface shape

whose bottom surface protrudes downward, and

the lower support section has a concave curved surface

shape along a bottom surface of the tank, and has a placement

surface on which the bottom surface of the tank is placed.
[Claim 3]

The ship according to Claim 1 or 2,

wherein the elastic support section is provided

between the hull side and a surface facing the bow-stern

direction in an upper section of the tank.
[Claim 4]

The ship according to any one of Claims 1 to 3,

wherein the elastic support section is provided

between the hull side and a surface facing a ship width

direction in an upper section of the tank.
[Claim 5]

The ship according to any one of Claims 1 to 4,

wherein the elastic support section is provided

between the hull side and a surface facing upward in an

upper section of the tank.
[Claim 6]

The ship according to any one of Claims 1 to 5,

wherein the elastic support section is fixed to at

least one of a broadside of the hull, a deck provided on

the hull and above the tank, a tank cover provided on the

hull and covering a section above the tank, and a bulkhead

provided on the hull and partitioning an inside of the hull

in a ship width direction or in the bow-stern direction.
[Claim 7]

The ship according to any one of Claims 1 to 6,

wherein the elastic support section is provided in a

compressed state or a tensile state between the hull side

and the tank.
[Claim 8]

The ship according to any one of Claims 1 to 7,

wherein the tank has a cylindrical shape extending in

the upward-downward direction.