IYJ-C sequence hydraulic mooring winch mostly consists of hydraulic motor&comma planetary gearbox&comma band brake&comma clutch&comma drum&comma warping  head &lparoptional&rpar&comma valve block with braking and overload safety perform&period Because of to equipped with valve block&comma the layout of HPU can be simplified&comma and trustworthiness of drives can be enhanced&interval The winch could have constant pressure operate on request&time period