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Class Information
Number: 405/206
Name: Hydraulic and earth engineering > Marine structure or fabrication thereof > Floatable to site and supported by marine floor > With ballasting means to sink or position structure at site > Detachable from structure
Description: Method or apparatus wherein the buoyant compartment is distinct from and removably attached to the construction.

Patents under this class:

Patent Number Title Of Patent Date Issued
8251004 Device for transporting structures on water Aug. 28, 2012
7958836 Stabilizing chamber for use with a mobile offshore unit Jun. 14, 2011
7954658 Procedure for descent of equipment to bottom of sea Jun. 7, 2011
7887261 Method for the transport of a civil engineering structure in an aquatic medium Feb. 15, 2011
7762744 Method and vessel for removing offshore structures Jul. 27, 2010
7311469 Floating lowering and lifting device Dec. 25, 2007
7114883 Offshore fluid transfer system and method Oct. 3, 2006
7114884 Method and apparatus for increasing floating platform buoyancy Oct. 3, 2006
7037947 Fischer-Tropsch synthesis process carried out on a floatable structure May. 2, 2006
7033115 Temporary floatation stabilization device and method Apr. 25, 2006
7011473 Method for underwater transportation and installation or removal of objects at sea Mar. 14, 2006
6893190 Method and structure for connecting a floating structure with rope anchor lines to the seabed May. 17, 2005
6857821 Device for lifting a seagoing construction such as a drilling rig, provided with lifting members running mutually parallel Feb. 22, 2005
6840713 Device for positioning and lifting a marine structure, particularly a platform deck Jan. 11, 2005
6786679 Floating stability device for offshore platform Sep. 7, 2004
6676334 Work module support vessel Jan. 13, 2004
6648553 Load transfer unit and method for removing off-shore platform from substructure Nov. 18, 2003
6565286 Method for fabricating and assembling a floating offshore structure May. 20, 2003
6550411 Method for removing a jacket of a drilling or production rig and vessel provided with a device therefor Apr. 22, 2003
6517290 Loading arrangement for floating production storage and offloading vessel Feb. 11, 2003
6503023 Temporary floatation stabilization device and method Jan. 7, 2003
6471444 Spar construction method Oct. 29, 2002
6428242 Folding support for removable piers and similar structures Aug. 6, 2002
6425710 Articulated multiple buoy marine platform apparatus Jul. 30, 2002
6299383 Method for deck installations on offshore substructure Oct. 9, 2001
6210075 Spar system Apr. 3, 2001
6210076 Offshore deck installation Apr. 3, 2001
6132143 Method for lifting a sea platform from the substructure Oct. 17, 2000
5924822 Method for deck installation on an offshore substructure Jul. 20, 1999
5197825 Tendon for anchoring a semisubmersible platform Mar. 30, 1993
5188484 Jack-up type offshore oil and gas production platform and method Feb. 23, 1993
5098219 Mobile submersible caisson for underwater oil-well drilling and production Mar. 24, 1992
4973200 Method for manoeuvering a superstructure element relative to a fixed construction arranged in water, method for constructing a building structure and building structure constructed according t Nov. 27, 1990
4930938 Offshore platform deck/jacket mating system and method Jun. 5, 1990
4927296 Method and installation for displacing a jacket of an artificial island in relation to an underwater base May. 22, 1990
4909671 Method for installation of a buoyant body on a sea bottom Mar. 20, 1990
4869620 Method and apparatus for constructing seawalls and docks Sep. 26, 1989
4683832 Device and method to set and salvage structures Aug. 4, 1987
4547095 Method for the construction, transportation and site installation of a deep-sea lattice structure Oct. 15, 1985
4516882 Method and apparatus for conversion of semi-submersible platform to tension leg platform for conducting offshore well operations May. 14, 1985
4473321 Method of launching a large floatable object from a dock to water and delaunching it Sep. 25, 1984
4456402 Method for increasing the stability of an artificial island by means of pre-loading Jun. 26, 1984
4380406 Jackup platform trailer Apr. 19, 1983
4303352 Method for the building and putting in place of a sea platform with a gravity resting base, and means for implementing such a method Dec. 1, 1981
4170954 Semi-submersible vessel Oct. 16, 1979
4103503 Drilling substructure transfer system Aug. 1, 1978
4007598 Artificial island and method of assembling the same Feb. 15, 1977

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