Hydraulic and earth engineering – Marine structure or fabrication thereof – With anchoring of structure to marine floor
Patent
1985-03-15
1986-02-18
Taylor, Dennis L.
Hydraulic and earth engineering
Marine structure or fabrication thereof
With anchoring of structure to marine floor
405195, 405 61, 405217, 114264, E02B 1700
Patent
active
045711259
ABSTRACT:
A floating offshore structure which is moored at a fixed position on the sea by means of mooring hawsers and anchors connected to the ends thereof respectively for conducting a submarine excavating operation from a deck of the structure. The structure includes a moorage hull part provided with a vertical through-hole formed therein for receiving an excavating drill pipe and the mooring hawsers and a movable hull part connected to the moorage hull part so as to be rotatable within a horizontal plane. The movable hull part is constituted as a hull defining the outer wall of the floating offshore structure and connected with the moorage hull part by inserting it into a moorage hull part receiving hole formed at a position closer to the bow thereof. The movable hull part has near its water plane a horizontal section with a substantially oval shape formed by a fore draft part in a substantially circular or polygonal shape with the moorage hull part receiving hole as a center and an after draft part taperingly projecting aft from the fore draft part.
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Narita Hitoshi
Oshima Masanao
Tabuchi Hiroshi
Yashima Nobuyoshi
Mitsui Engineering and Shipbuilding Company Limited
Taylor Dennis L.
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