This equipment uses hydraulic drive rotary type,by its own gravity of the boat to make it down to the water,which could make the boat slew to outboard in case of losing of the power supply.While lowering,the sailors in the boat could pull the remote ontrol steel rope,through the pulley around the reel.To lift the winch hammer to control the boat/raft lowering or stop.This also could be operated by sailors on the operation deck.The winch is use of motor-driven winch gear box and gear box with centrifugal speed and manual brake function delegated.The device is designed and manufacturing according to the latest SOLAS standards and international standards.