Quick release mooring hooks systems have been widely used because of its safety reliability, feature of laborsaving and shortcut. Quick release mooring hooks systems composed by stranded cable structure and release mooring structure, 1 Reeling the mooring rope automatically. 2 Tying up safety and reliability . 3 Casting loose quickly. Three are single hook, double hook, triple hook, quadruple hook series, among which double hook and triple hook are most widely used.