KR101722245B1 - A latter shape working platform and a ship including the same - Google Patents

A latter shape working platform and a ship including the same Download PDF

Info

Publication number
KR101722245B1
KR101722245B1 KR1020150070939A KR20150070939A KR101722245B1 KR 101722245 B1 KR101722245 B1 KR 101722245B1 KR 1020150070939 A KR1020150070939 A KR 1020150070939A KR 20150070939 A KR20150070939 A KR 20150070939A KR 101722245 B1 KR101722245 B1 KR 101722245B1
Authority
KR
South Korea
Prior art keywords
ladder
wheel
extension
work platform
interior
Prior art date
Application number
KR1020150070939A
Other languages
Korean (ko)
Other versions
KR20160136841A (en
Inventor
신동길
Original Assignee
삼성중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성중공업 주식회사 filed Critical 삼성중공업 주식회사
Priority to KR1020150070939A priority Critical patent/KR101722245B1/en
Publication of KR20160136841A publication Critical patent/KR20160136841A/en
Application granted granted Critical
Publication of KR101722245B1 publication Critical patent/KR101722245B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mining & Mineral Resources (AREA)
  • Ocean & Marine Engineering (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Ladders (AREA)

Abstract

A ladder-type work platform and a vessel including the same are provided. The ladder-like work platform includes: a ladder-like structure extending in a first direction; And an extension extending from at least one side of the ladder structure in a second direction perpendicular to the first direction, wherein the extension comprises one or more wheels and one or more wheels capable of rolling in a third direction perpendicular to the first direction and the second direction, And a guide pin for restricting movement of the ladder-like structure and the extension in the first direction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ladder-type work platform and a ship including the same,

The present invention relates to a ladder-type work platform and a ship including the same.

In general, ships contain many equipment that perform various functions. Inspection and repair of the equipment installed in the ship is required for the continuous maintenance of the ship function.

Since the ship is a huge structure compared to the worker, the work platforms are installed in various places for the operator's access to each equipment located in the ship, and the operator can perform the inspection and repair of the equipment installed in the ship on the work platform have.

Korean Patent Publication No. 10-2013-0061806

However, some equipment or some spaces within the ship may be difficult to install a work platform for maintenance of equipment to perform a specific process or task.

For example, in the case of a drill ship, a blow-out preventer ("BOP") may be lowered into the ocean through the door frame and a door guide system may be provided to prevent collision between the door interior wall and the BOP have.

In addition to maintenance of the guide system, it is necessary to maintain the structure of the guide system, which is usually formed by a retractable arm, and a sufficient space for the BOP to pass through the interior of the interior. It is difficult to install the work platform on the inner wall of the door.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a work platform that is accessible to equipment or a place where it is difficult to install a work platform in a ship and can be removed after work.

Another problem to be solved by the present invention is to provide a ladder-type work platform in which the interior and exterior walls of a ship are accessible to a door guiding system.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a ladder-type work platform comprising: a ladder-type structure extending in a first direction; And an extension extending from at least one side of the ladder structure in a second direction perpendicular to the first direction, wherein the extension comprises at least one wheel capable of rolling in a third direction perpendicular to the first direction and the second direction, And a guide pin for restricting movement of the ladder-like structure and the extension in the first direction together with the at least one wheel.

In addition, the extension may include one or more extension bars, one end of which is coupled to one side of the ladder-like structure and extends from the ladder-like structure in the second direction, Further comprising at least one support bar, the guide pin penetrating the at least one support bar.

The extensions may further include one or more wheel supports coupled to the one or more extension bars, wherein the one or more wheels engage the one or more wheel supports.

Also, the at least one wheel includes at least a first wheel and a second wheel, wherein the at least one wheel support includes at least a first wheel support and a second wheel support, wherein the first wheel and the second wheel are T Shaped rail, and the guide pin contacts the lower surface of the T-shaped rail.

The working plate is coupled to the other end of the ladder-like structure and extends in the second direction, and one or more wheel supports coupled to one end of the flat plate, and the one or more wheel supports.

On the other hand, the ladder-type work platform further includes a working plate disposed on the other side of the ladder-like structure.

The working plate may further include a flat plate coupled to the other side of the ladder structure and extending in the second direction and at least one third wheel support coupled to one end of the flat plate, And the third wheel.

In order to solve the above problems, a ship according to an aspect of the present invention includes: A T-shaped rail disposed at one or more edges of the door frame; And a ladder-type work platform contacting the at least one sidewall of the T-shaped rail and the door frame, wherein the ladder-type work platform comprises: a ladder-like structure extending downward from the top of the door frame; An extension extending laterally from one side of the ladder structure; And a working plate extending laterally from the other side of the ladder structure, wherein the extension includes a first wheel and a second wheel contacting an upper surface of the T-shaped rail, and the working plate comprises one And a third wheel in contact with the side wall.

In addition, the first wheel and the second wheel are rollable along the T-rail, and the third wheel is capable of rolling in contact with one or more side walls of the door frame.

The extension portion may further include a guide pin contacting the lower surface of the T-shaped rail, wherein the first wheel, the second wheel, and the guide pin are mounted on the upper and lower portions of the ladder- Restrict movement.

Other specific details of the invention are included in the detailed description and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exemplary cross-sectional view of a drill rig including a portal.
Fig. 2 is a photograph of an exemplary image frame viewed from the upper side of the image frame.
Fig. 3 is a photograph showing a state in which the BOP is placed in the interior of the door of Fig. 2;
Fig. 4 is a cross-sectional view showing a cross section of one side wall of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior.
Fig. 5 is a cross-sectional view showing a cross section of one side wall inside the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior.
6 is an exemplary partial cross-sectional view of a door frame having a ladder-type work platform according to an embodiment of the present invention.
7 is a perspective view of a ladder-type work platform in accordance with an embodiment of the present invention.
8 is a top view of a ladder-type work platform according to an embodiment of the present invention.
9 is an enlarged cross-sectional view of an extension of a ladder-type work platform according to an embodiment of the present invention.
10 is an enlarged cross-sectional view of a work plate of a ladder-type work platform according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It should be understood that the terms comprising and / or comprising the terms used in the specification do not exclude the presence or addition of one or more other elements, steps and / or operations in addition to the stated elements, steps and / use. And "and / or" include each and any combination of one or more of the mentioned items.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exemplary cross-sectional view of a drill rig including a portal.

Referring to Fig. 1, a vessel on which a ladder-type work platform according to an embodiment of the present invention is mounted, a drill rig including a portal is illustrated.

However, it should be understood that the work platform according to the present invention can be provided to other vessels other than the drill ship, and it is to be understood that the present invention is intended to illustrate the use of the ladder-type work platform according to an embodiment of the present invention.

A ship 10, such as a drill ship, may be equipped with a moonpool 20 for drilling into the seabed on the ship. The door frame 20 is a hollow monofilament or a cylindrical structure formed to penetrate the upper deck and bottom of the ship 10 in the vertical direction.

For example, in the case of a drill ship, a drilling device installed on an upper deck is inserted through a doorpipe 20 after being moored at a predetermined position, and is moored at a predetermined position in the case of a drill ship. The device is pushed down to the seabed.

Fig. 2 is a photograph of an exemplary image frame viewed from the upper side of the image frame.

Fig. 3 is a photograph showing a state in which the BOP is placed in the interior of the door of Fig. 2;

2 and 3, a high-pressure gas or fluid can be blown back through the borehole during the drilling operation of the seabed. In order to prevent such backflow, an ejection preventing device, that is, a BOP is installed on the seabed and a BOP is generally descended to the sea floor through the portal on the ship.

A Moonpool Guiding System ("MGS") may be mounted on the inner wall of the door frame to prevent collision between the door frame and the BOP.

The MGP can be formed as a retractable arm and is normally kept in a contracted state, and can be unfolded to guide BOP when it is necessary to place the BOP in the interior of the frame.

In Fig. 3, the door guide system is unfolded to support the BOP in the interior of the door, and the BOP can be stably lowered to the seabed.

Fig. 4 is a cross-sectional view showing a cross section of one side wall of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior.

Fig. 5 is a cross-sectional view showing a cross section of one side wall inside the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior of the interior.

4 and 5, the door frame 20 includes a side wall 220 of the door frame, a door guiding system (MGS) installed on the side wall 220, And may include a T-shaped rail 210 for being placed and transporting necessary equipment. The door frame guiding system MGS includes an upper hinge H1 and a lower hinge H2 which are fixed to the side wall 220 of the door frame and one end of the upper hinge H1 and the lower hinge H2 are fixed to the upper hinge H1 and the lower hinge H2, And an upper arm and a lower arm rotatably connected to each other, wherein the upper arm and the lower arm can be pivotably connected to each other at the other end thereof. In the example of Fig. 4, the upper arm of the door frame guiding system (MGS) is constituted by a hydraulic contractible arm, and its length can be stretched or contracted by hydraulic pressure.

In addition, the door frame guiding system MGS includes a BOP guide extending from an end rotatably connected to the upper arm and the lower arm, and a BOP guide coupled to the BOP guide when the upper arm and the lower arm are in a contracted state, And a guide fixing part 230 for fixing the guide part 230 in a contracted state. The guide fixing part 230 may be positioned on the upper part of the upper hinge H1 and may include a latching ring 232 rotatably connected to the body of the guide fixing part 230. [

As shown in FIG. 4, the latching ring 232 can be fixed to the BOP guide to fix the door guiding system (MGS) when the door pull guiding system (MGS) is retracted.

Further, as shown in FIG. 5, when the door pull guiding system MGS is in the extended state, the latching hook 232 can rotate in the sidewall direction to release the fixing which has been fastened to the BOP guide.

For the support of the BOP in the artwork, the Artillery Guiding System (MGS) is used. In order to inspect and maintain the MGS, an operator may be required to access the MGS. However, as described above, since the media guide guiding system (MGS) can be changed in shape from the contracted state formed by the contractible arm and disposed adjacent to the side wall and the extended state extended from the side wall, It is difficult to install a work platform for the worker's approach. It is also difficult to provide a fixed work platform on other parts of the side wall 220 because a sufficient distance between the equipment, e.g., BOP, and the side walls 220 of the door frame 20 must be ensured through the door frame 20.

Accordingly, the present invention provides a method and system for providing access to a device, e.g., a media guiding system (MGS), in a side wall 220 of a media access, removable from a side wall 220 of the media, Provides a possible ladder-type work platform.

6 is an exemplary partial cross-sectional view of a door frame having a ladder-type work platform according to an embodiment of the present invention.

7 is a perspective view of a ladder-type work platform in accordance with an embodiment of the present invention.

8 is a top view of a ladder-type work platform according to an embodiment of the present invention.

6 to 8, a ladder-type work platform 100 according to an embodiment of the present invention includes a ladder-type structure 110 and an extension part 120 extending from one side of the ladder-type structure 110 do.

The ladder-like structure 110 extends in the first direction, and the outer surface forms a ladder structure. As shown in FIG. 6, when the ladder-like structure 110 is arranged in the vertical direction in the interior 20, the operator can move to the lower portion of the interior 20 using the ladder-like structure 110.

In addition, the ladder-like work platform 100 may include a working plate 130 disposed on the other side of the ladder-like structure 110.

9 is an enlarged cross-sectional view of an extension of a ladder-type work platform according to an embodiment of the present invention.

Referring to FIG. 9, the extension 120 extends from one side of the ladder-like structure 110 in a second direction perpendicular to the first direction. The extension portion 120 includes at least one extension bar 122 which is connected to one side of the ladder structure 110 by a fixing screw 121 and extends from the ladder structure 110 in a second direction, At least one support bar 124 coupled to the other end of the support bar 124 and extending in a first direction, a first wheel support 124 coupled to the extension bar 122 between the support bar 124 and the ladder- A first wheel 127 and a second wheel 128 coupled to the first wheel support 125 and the second wheel support 126 respectively and a support bar 125 And a guide pin 123 passing through the guide pin 123.

In the illustrated embodiment, it is exemplified that the first wheel 127 and the second wheel 128 are disposed on the top surface of the T-shaped rail. That is, the first wheel 127 and the second wheel 128 are arranged on the upper surface of the T-shaped rail in a first direction (vertical direction) in which the ladder structure 110 is oriented and a second direction (The extending direction of the T-shaped rail) which is perpendicular to the first direction (the horizontal direction).

The guide pin 123 passing through the support bar 124 is in contact with the lower surface of the T rail so that the guide pin 123 extends along with the first wheel 127 and the second wheel 128 The operation unit 120 can restrict the first direction movement (vertical movement) of the ladder-type work platform 100 as well.

Accordingly, the first wheel 127 and the second wheel 128 are rotatable along the T-shaped rail 210, and can be supported on the T-shaped rail 210 without moving up and down (moving in the first direction).

10 is an enlarged cross-sectional view of a work plate of a ladder-type work platform according to an embodiment of the present invention.

10, the working plate 130 includes a flat plate 132 coupled to the other side of the ladder-like structure 110 and extending in a second direction perpendicular to the first direction, and at least one third A wheel support 134, and one or more third wheels 136, each supported by one or more third wheel supports 134.

As shown in the figure, the third wheel 136 can contact the side wall 220 of the door frame while the ladder-type work platform 100 is installed inside the door frame 20, Shaped rail 210 as a center. Further, the third wheel 136 may be engaged while the first wheel 127 and the second wheel 128 are in contact with the side wall 220 when the second wheel 128 is rotated along the T-rail 210 So that the ladder-type work platform 100 can move along the T-shaped rail 210 while being installed inside the door 20.

Accordingly, the operator can move the ladder-type work platform 100 to the vicinity of the equipment requiring maintenance in the side wall 220 of the door frame, and the worker can access the equipment requiring maintenance through the ladder-type work platform 100 It can be possible.

Further, the operator can perform a desired operation stably on the ladder-like structure 110 or on the work plate 130, wherein the ladder-type work platform 100 is operated by the first wheel 127, 128, the guide pin 123, and the third wheel 136, the vertical movement and the rotation behavior can be stably limited.

100: Ladder type work platform 110: Ladder type structure
120: extension part 130: working plate
MGS: Gaming System

Claims (11)

A ladder structure extending in a first direction;
And an extension extending from at least one side of the ladder structure in a second direction perpendicular to the first direction,
The extension
One or more wheels capable of rolling in contact with the upper surface of the T-shaped rail in a third direction perpendicular to the first direction and the second direction,
One or more extension bars, one end of which is coupled to one side of the ladder-like structure and extends in the second direction from the ladder-
At least one support bar coupled to the other end of the at least one extension bar and extending in the first direction,
And a guide pin passing through the at least one support bar and contacting a lower surface of the T-shaped rail without the ladder-type structure with respect to the at least one wheel.
Ladder type work platform. The method according to claim 1,
Wherein the guide pin restricts movement of the ladder-like structure and the extension in a first direction with the at least one wheel,
Ladder type work platform. delete The method according to claim 1,
Wherein the extension further comprises at least one wheel support coupled to the at least one extension bar,
Wherein the one or more wheels engage on the one or more wheel supports,
Ladder type work platform. 5. The method of claim 4,
Wherein the at least one wheel includes at least a first wheel and a second wheel,
Wherein the at least one wheel support comprises at least a first wheel support and a second wheel support,
Ladder type work platform. The method according to claim 1,
Further comprising a working plate disposed on the other side of the ladder structure,
Ladder type work platform. The method according to claim 6,
Wherein the working plate includes a flat plate coupled to the other side of the ladder structure and extending in the second direction and at least one wheel support coupled to one end of the flat plate,
Ladder type work platform. The method according to claim 6,
Wherein the working plate includes a flat plate coupled to the other side of the ladder structure and extending in the second direction and at least one third wheel support member coupled to one end of the flat plate and one or more third wheel support members connected to the at least one third wheel support member, Including 3 wheels,
Ladder type work platform. Moonlight;
A T-shaped rail disposed at one or more edges of the door frame; And
And a ladder-type work platform contacting the at least one sidewall of the T-shaped rail and the door frame,
The ladder-type work platform includes: a ladder-like structure extending from the upper portion of the doorpane to the lower portion of the doorpath;
An extension extending laterally from one side of the ladder structure; And
And a working plate extending laterally from the other side of the ladder structure,
The extension
A first wheel and a second wheel that are in contact with an upper surface of the T-shaped rail and are capable of rolling,
One or more extension bars, one end of which is coupled to one side of the ladder structure and extends from the ladder structure,
At least one support bar extending from and joined to the other end of the at least one extension bar, and
And a guide pin passing through the at least one support bar and contacting a lower surface of the T-shaped rail without the ladder-type structure with respect to the at least one wheel.
Ship. 10. The method of claim 9,
Wherein the work plate includes a third wheel that contacts one or more side walls of the door frame,
Wherein the first wheel and the second wheel are rollable along the T-rail, and the third wheel is in contact with at least one side wall of the door frame,
Ship. 10. The method of claim 9,
The first wheel, the second wheel and the guide pin restricting movement of the ladder-like structure and the extension to the upper and lower portions,
Ship.
KR1020150070939A 2015-05-21 2015-05-21 A latter shape working platform and a ship including the same KR101722245B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150070939A KR101722245B1 (en) 2015-05-21 2015-05-21 A latter shape working platform and a ship including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150070939A KR101722245B1 (en) 2015-05-21 2015-05-21 A latter shape working platform and a ship including the same

Publications (2)

Publication Number Publication Date
KR20160136841A KR20160136841A (en) 2016-11-30
KR101722245B1 true KR101722245B1 (en) 2017-03-31

Family

ID=57707089

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150070939A KR101722245B1 (en) 2015-05-21 2015-05-21 A latter shape working platform and a ship including the same

Country Status (1)

Country Link
KR (1) KR101722245B1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005231485A (en) * 2004-02-19 2005-09-02 Hitachi Plant Eng & Constr Co Ltd Traveling type working unit
JP2006021721A (en) * 2004-07-09 2006-01-26 Universal Shipbuilding Corp Inspecting device for hold side wall structural member

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101858507B1 (en) 2011-12-02 2018-06-29 대우조선해양 주식회사 Underhull guidance with movable platform for drillship

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005231485A (en) * 2004-02-19 2005-09-02 Hitachi Plant Eng & Constr Co Ltd Traveling type working unit
JP2006021721A (en) * 2004-07-09 2006-01-26 Universal Shipbuilding Corp Inspecting device for hold side wall structural member

Also Published As

Publication number Publication date
KR20160136841A (en) 2016-11-30

Similar Documents

Publication Publication Date Title
EP2823105B1 (en) An offshore system comprising a rig and a cantilever
US20080298898A1 (en) Offshore Platform with Movable Cantilever Extending Beyond the Deck
US7451821B2 (en) Blow out preventer transfer platform
KR101722245B1 (en) A latter shape working platform and a ship including the same
KR102132515B1 (en) Riser Handling System and Oil Prospection offshore rig Including The Same
US20180010398A1 (en) Lift frame storage and deployment
US9759021B2 (en) Riser handling on a drilling rig and a flip and service machine for riser handling on a drilling rig
KR101797616B1 (en) Drillship With Lower Deck For Storing Blowout Preventer Test Equipment
KR102107309B1 (en) Riser Handling System and Oil Prospection offshore rig Including The Same
KR200481827Y1 (en) Stanchion for Drill Ship Pipe Rack
KR20140005444A (en) Drilling apparatus having retractable test stump for well head connector remove and test
KR101778379B1 (en) Riser Handling System and Method of Handling Riser Using The Same and Oil Prospection Ship Including The Same
KR101874364B1 (en) Complex shared trolley apparatus
KR101606697B1 (en) Liferaft supporting apparatus and drillship having the same
KR20150063753A (en) Bare Riser Joint Piling Module
KR101414223B1 (en) Rising/descend structure type derrick and rising/descend method of the derrick
KR101551798B1 (en) Overhead crane and drilling ship having these
KR20160039053A (en) Transport system for ship
KR101414222B1 (en) Rising and descend system and structure of derrick in offshore structure
KR200481083Y1 (en) Install structure of access basket for drillship
KR20150076038A (en) Drillship having a house under a catwalk
EP1706578B1 (en) Blow out preventer transfer platform
KR20160001796U (en) Maintenance system of derrick and offshore structure having the maintenance system
KR20170049676A (en) Riser Handling System and Oil Prospection Ship Including The Same
KR20170049673A (en) Riser Handling System and Oil Prospection Ship Including The Same

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant