Hydraulic and earth engineering – Marine structure or fabrication thereof – In or on frozen media
Patent
1985-04-24
1987-01-27
Taylor, Dennis L.
Hydraulic and earth engineering
Marine structure or fabrication thereof
In or on frozen media
405 61, 405195, 405203, E02B 1700
Patent
active
046391673
ABSTRACT:
The mobile marine drilling structure is of the submersible type for operation in ice-covered waters. The structure comprises a base for placing the structure on the sea bed, a hull extends from the base, and a deck is supported by the hull. The deck is located above the water line for conducting drilling operations. The hull has an internal frame assembly including ballast tanks, and external wall sections at different inclinations to the horizontal to engage and break up the moving ice masses encroaching on the hull. These external wall sections include a plurality of matching polygonal, frusto-pyramidal, apex-up and apex-down walls extending above the base, and two transitional wall sections to provide two inflection points to the hull.
REFERENCES:
patent: 3952527 (1976-04-01), Vinieratos et al.
patent: 4080798 (1978-03-01), Reusswig et al.
patent: 4245929 (1981-01-01), Pearce et al.
patent: 4325655 (1982-04-01), Jahns et al.
patent: 4335980 (1982-06-01), DePriester
patent: 4553879 (1985-11-01), Langner
Chabot Luc G.
Costello Carmon R.
Fujita Tadahiro
Hirose Haruki
Petty Terry D.
Breston Michael P.
Nippon Kokan K.K.
Odeco, Inc.
Taylor Dennis L.
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