Patent ID: 6463870
Filing Date: 2002-10-15
Classification: B63B

Abstract:
A mooring system for a semisubmersible tender with a lightship displacement of less than 15,000 short tons for a deep draft caisson vessel (SPAR) comprising:a. at least 8 anchors; b. at least two hawsers connected from a semisubmersible tender to a deep draft caisson vessel; and c. at least 8 mooring lines, each line consisting of: a first length of steel wire rope secured to each of said anchors; a length of polymer rope secured to each of said first length of steel wire rope; a second length of steel wire rope having a first and second end, and wherein said first end is secured to said length of polymer rope and said second end is secured to the tender; and wherein said mooring line has adequate elasticity, stiffness and strength to accommodate the load on said tender under an environmental load produced by an up to a 10-year storm in the tendering position, and further wherein said mooring lines have a strength to withstand the environmental load produced by up to a 100-year extreme weather condition when said tender is moved to a 100-year extreme weather condition standby tender is moved to a 100-year extreme weather condition standby position; and said lines are adapted to synchronize the movements between said semisubmersible tender and said deep draft caisson vessel, while tendering.