Floating offshore structure

Details Floating offshore structure Floating offshore structure

B - Operations, Transporting

63

B

114/58.5

B63B 21/50 (2006.01) B63B 35/44 (2006.01)

Patent

CA 1213788

ABSTRACT OF THE DISCLOSURE 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 shape, including a polygon, 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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