GB1527759A - Semi-submersible structures and method of manufacture thereof - Google Patents

Semi-submersible structures and method of manufacture thereof

Info

Publication number
GB1527759A
GB1527759A GB50767/75A GB5076775A GB1527759A GB 1527759 A GB1527759 A GB 1527759A GB 50767/75 A GB50767/75 A GB 50767/75A GB 5076775 A GB5076775 A GB 5076775A GB 1527759 A GB1527759 A GB 1527759A
Authority
GB
United Kingdom
Prior art keywords
columns
platform
beams
semi
sub
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB50767/75A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Engineering and Shipbuilding Co Ltd
Original Assignee
Mitsui Engineering and Shipbuilding Co Ltd
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 Mitsui Engineering and Shipbuilding Co Ltd filed Critical Mitsui Engineering and Shipbuilding Co Ltd
Priority to GB50767/75A priority Critical patent/GB1527759A/en
Publication of GB1527759A publication Critical patent/GB1527759A/en
Expired legal-status Critical Current

Links

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 
    • B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH

Abstract

1527759 Semi-submersible structures MITSUI SHIPBUILDING & ENG CO Ltd 11 Dec 1975 50767/75 Heading B7A A semi-submersible structure comprises a prefabricated platform 3 and a sub-assembly having lower hulls 1, columns 2 mounted on the hulls 1, horizontal beams 5 interconnecting opposed columns, and platform braces 4 connected to the columns 2, the platform 3 being positioned in the space between the upper ends of the columns 2 while the subassembly is partially submerged and the space is temporarily increased due to resilient deformmation of the beams 5. The sub-assembly is partially submerged by filling with ballast water, whereafter unballasting of the beams 5 causes them to bend and increase the separation of the upper ends of the columns. Once the platform 3 is positioned in the space reballasting of the beams 5 restraightens them so that the platform is clamped between clamping members 200 on the columns 2. Deballasting of the hulls and columns then takes place whereby the sub-assembly is floated upwardly so that guide members 14 engage the lower surface of the platform. Finally further deballasting enables the structure to rise sufficiently to enable connection of the platform 3 to the columns and braces 4.
GB50767/75A 1975-12-11 1975-12-11 Semi-submersible structures and method of manufacture thereof Expired GB1527759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB50767/75A GB1527759A (en) 1975-12-11 1975-12-11 Semi-submersible structures and method of manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB50767/75A GB1527759A (en) 1975-12-11 1975-12-11 Semi-submersible structures and method of manufacture thereof

Publications (1)

Publication Number Publication Date
GB1527759A true GB1527759A (en) 1978-10-11

Family

ID=10457277

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50767/75A Expired GB1527759A (en) 1975-12-11 1975-12-11 Semi-submersible structures and method of manufacture thereof

Country Status (1)

Country Link
GB (1) GB1527759A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474992A1 (en) * 1980-02-05 1981-08-07 Doris Dev Richesse Sous Marine Working float adjustable height - has vertical pillars supported on horizontal submerged containers bridged together
FR2774967A1 (en) * 1998-02-13 1999-08-20 Doris Engineering Barge for the development and exploitation of an oilfield at sea
EP1060982A3 (en) * 1999-06-14 2001-09-19 Deep Oil Technology, Incorporated Installation of decks on offshore substructures
WO2004110855A2 (en) * 2003-06-11 2004-12-23 Deepwater Technologies, Inc. Semi-submersible multicolumn floating offshore platform
WO2005035354A1 (en) * 2003-10-17 2005-04-21 Jurong Shipyard Pte Ltd A method of constructing a semi-submersible vessel using dry dock mating
CN101708764B (en) * 2009-12-11 2012-07-04 大连船舶重工集团有限公司 Overwater replacing method of structure of stay tube
CN114802621A (en) * 2022-03-30 2022-07-29 广州文冲船舶修造有限公司 Construction method of deep-sea semi-submersible type breeding tourism platform

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474992A1 (en) * 1980-02-05 1981-08-07 Doris Dev Richesse Sous Marine Working float adjustable height - has vertical pillars supported on horizontal submerged containers bridged together
FR2774967A1 (en) * 1998-02-13 1999-08-20 Doris Engineering Barge for the development and exploitation of an oilfield at sea
EP1060982A3 (en) * 1999-06-14 2001-09-19 Deep Oil Technology, Incorporated Installation of decks on offshore substructures
WO2004110855A2 (en) * 2003-06-11 2004-12-23 Deepwater Technologies, Inc. Semi-submersible multicolumn floating offshore platform
US6935810B2 (en) 2003-06-11 2005-08-30 Deepwater Technologies, Inc. Semi-submersible multicolumn floating offshore platform
WO2004110855A3 (en) * 2003-06-11 2005-09-15 Deepwater Technologies Inc Semi-submersible multicolumn floating offshore platform
GB2419114A (en) * 2003-06-11 2006-04-19 Deepwater Technologies Inc Semi-submersible multicolumn floating offshore platform
WO2005035354A1 (en) * 2003-10-17 2005-04-21 Jurong Shipyard Pte Ltd A method of constructing a semi-submersible vessel using dry dock mating
SG135929A1 (en) * 2003-10-17 2007-10-29 Jurong Shipyard Pte Ltd A method of constructing a semi-submersible vessel using dry dock mating
KR101153607B1 (en) 2003-10-17 2012-06-11 주롱 쉽야드 피티이 엘티디 A method of constructing a semi-submersible vessel using dry dock mating
CN101708764B (en) * 2009-12-11 2012-07-04 大连船舶重工集团有限公司 Overwater replacing method of structure of stay tube
CN114802621A (en) * 2022-03-30 2022-07-29 广州文冲船舶修造有限公司 Construction method of deep-sea semi-submersible type breeding tourism platform

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee