The gravity overhead rolling davit is a system which is designed for lowering lifeboat and rescue boat . This device could launch the lifeboat by its own gravity to the surface of water , It could launch the lifeboat by its own gravity to the surface of water .

Hydraulic Gravity Type Davit conforms to the requirements of the Amendments to SOLAS 1996 --MSC.47(66), International LSA Code MSC 48(66), IMO Resolution MSC81(70) and MSC.216(82),MSC.218(82) and MSC.226(82).