Patent ID: 9121153
Filing Date: 2015-09-01
Classification: B63G,E02B

Abstract:
1. A method comprising: providing a buoyant, variable length marine barrier gate, wherein when the barrier gate is floating in a body of water, the barrier gate is movable from an expanded position where the barrier gate extends from a substantially stationary first attachment point to a substantially stationary second attachment point, to a retracted position where the barrier gate extends from the first attachment point to a location between the first and second attachment points; attaching a proximal end of the barrier gate to the first attachment point; extending a catenary cable, attached to the first attachment point and movably engagable with the barrier gate, from the first attachment point to the second attachment point; attaching the catenary cable to the second attachment point; tensioning the catenary cable when the barrier gate is in the refracted position, such that the catenary cable absorbs catenary loads on the barrier gate when the barrier gate is moved from the retracted position to the expanded position; and moving the barrier gate from the retracted position to the expanded position after the catenary cable has been tensioned.