B - Operations – Transporting – 63 – B
Patent
B - Operations, Transporting
63
B
B63B 21/50 (2006.01) B63B 22/02 (2006.01)
Patent
CA 2153055
A vessel (11) with a mooring recess (15) on the bottom of the hull moors to a submerged buoyant mooring element (12) anchored to the ocean bottom by hoisting the mooring element (12) from a stowed position at a depth of net neutral buoyancy of the mooring element and its anchoring system (18) into contact with the mooring recess (15). The mooring operation is completed safely, quickly, and positively by rapidly withdrawing seawater into the hull (16) through an opening (58) in the mooring recess so as to reduce the hydrostatic pressure acting on the top of the mooring element as the element comes into contact with the hull of the vessel. The pressure reduction is sufficient to shift the mooring element and its anchoring system from a net negative to a net positive buoyancy condition at the keel depth of the vessel. The seawater may be withdrawn by a high capacity pump (56) that is either specifically installed for this purpose or is part of a bow thruster system of a type commonly found on large vessels.
Korsgaard Jens
Smart & Biggar
LandOfFree
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