Mooring release apparatus and method

Details Mooring release apparatus and method Mooring release apparatus and method

B - Operations, Transporting

63

B

114/58.5, 114/59

B63B 21/24 (2006.01) B23K 7/00 (2006.01) B63B 21/60 (2006.01) F16G 15/04 (2006.01)

Patent

CA 1213476

ABSTRACT An apparatus and method having particular utility in quickly releasing the moorings of large vessels and offshore platforms. The preferred embodiment of the apparatus comprises a pair of pyrotechnic cutting torches disposed in a housing included as a structural member in a submerged mooring, such as an anchor chain. The housing divides at one end into a shackle comprising substantially parallel laterally spaced walls, each having an aperture therethrough. A common anchor chain link is inserted between the walls of the shackle and a shackle pin is inserted through the wall apertures and the link to secure the link to the housing. The cutting torches are disposed in the same plane as the link, and the torch nozzles oriented so as to sever the link on both sides of the pin when the torches are ignited, in order to release the chain therefrom. The other end of the housing comprises a clevis, secured to the anchor chain by a Kenter shackle. Torch ignition is actuated by an acoustic control system commanded from a remote location.

452671

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