Heave stabilization of semi-submersible platforms

Details Heave stabilization of semi-submersible platforms Heave stabilization of semi-submersible platforms

1976-10-08

1978-09-12

Blix, Trygve M.

Ships

Floating platform

Multiple leg

9 8P, B63B 2152

Patent

active

041128648

ABSTRACT:
Semi-submersible offshore drilling platforms are stabilized to reduce heave at wave periods which are shorter than those at which heave resonance occurs. Platform structures include supporting columns and pontoons. The pontoons extend outboard of the columns and have non-uniform cross sections. In addition, the pontoons may be shifted outwardly from the column center-lines. Reduced heave response to head-on, stern-on and beam waves is achieved.

REFERENCES:
patent: 1643464 (1927-09-01), McCullers
patent: 1705303 (1929-03-01), Nagy
patent: 3078680 (1963-02-01), Wepsala
patent: 3187355 (1965-06-01), Wassenaar
patent: 3649978 (1972-03-01), Monnereau
patent: 3824943 (1974-07-01), Mo
patent: 3874314 (1975-04-01), Sanders
patent: 3894503 (1975-07-01), McClure
patent: 3917022 (1975-11-01), Brooks
patent: 3978805 (1976-09-01), Thomas

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