Universally stable oil well ship turret

Details Universally stable oil well ship turret Universally stable oil well ship turret

1997-09-26

2000-01-18

Swinehart, Ed

Ships

Mooring device

Having ship-mounted turret

B63B 2100

Patent

active

060149396

ABSTRACT:
A universally stable oil-well-ship turret (1) has a circumturret cylinder (2) with an inside periphery sufficiently greater than an outside periphery of a turret cylinder (7) to allow vertical positioning of the turret cylinder within the circumturret cylinder in opposition to variations from verticality of the circumturret cylinder in response to effects of wave and weather conditions on a marine vessel in which the circumturret cylinder is positioned rigidly. A plurality of horizontal and vertical bearings (10, 11) are pressure-cylinder actuated to maintain horizontal attitude of a turret flange (8) from which the turret cylinder is extended downward vertically into the circumturret cylinder. Sensor-responsive automation that is self-checking for reliability, selective manual operation and computer controls (52, 54) are provided. Appropriate redundancy and backup are provided for all systems, components and features. A use method is described.

REFERENCES:
patent: 4753553 (1988-06-01), Carlsen et al.
patent: 4943188 (1990-07-01), Peppel
patent: 5025742 (1991-06-01), Urdshals
patent: 5181799 (1993-01-01), Carruba
patent: 5339760 (1994-08-01), Korsgaard
patent: 5762017 (1998-06-01), Groves
patent: 5839387 (1998-11-01), Myklebust

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