Offshore drilling structure

Details Offshore drilling structure Offshore drilling structure

1976-06-23

1977-07-26

Shapiro, Jacob

Ships

Building

Canal and ferry boats

61 99, 61103, 114294, B63B 3544, B63B 2127

Patent

active

040374246

ABSTRACT:
An offshore drilling structure of the semi-submersible type wherein holes connect a recessed area in the bottom of the floatable hull with the top of the hull, and reversibly acting thrusters are mounted within the holes.

REFERENCES:
patent: 3241324 (1966-03-01), Storm et al.
patent: 3892287 (1975-07-01), Bennett
patent: 3911687 (1975-10-01), Mo
patent: 3925997 (1975-12-01), Hafskjold
patent: 3928982 (1975-12-01), Lacroix

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