Quick Release Hook (QRH) units shall be installed in the location, orientation and arrangement to be established in the detailed drawings according to the mooring analysis. 

Each QRH assembly shall be a complete unit designed and built to hold the mooring ropes and to release the mooring lines quickly. Each unit shall be equipped with an integrally mounted, electrically driven capstan. The running line pull load of each capstan shall be 1 tonne. Start-up pull capacity is twice the line pull.