Patent ID: 7395771

Claim:
An anchor system for a surface marine installation, said anchor system comprising an anchor line which extends between said marine installation and a seabed to moor said marine installation to said seabed, said anchor line being operable to allow movements of said marine installation around an equilibrium position, said anchor line comprising a chain, an attachment device operable to attach said chain to said marine installation; said attachment device comprising a deformable longitudinal member having a first end fixed to said marine installation and an opposite second end fixed to said chain; said deformable longitudinal member has at least one first portion which can be deformed along said first portion and in a thickness direction of said first portion by deflection in a first plane and at least one other second portion which can be deformed along said second portion and in a thickness direction of said second portion by deflection in a second plane substantially perpendicular to said first plane, during movements of said marine installation and wherein said first portion is not deflectable in said second plane and said second portion is not deflectable in said first plane.