E-90 Single pivot gravity davit for lifeboats

The E-SERIES single pivot gravity davits are specifically designed for safe and efficient launch and retrieval of totally enclosed lifeboats. It is intended for long term, reliable operation in harsh and hazardous marine and offshore environments. The davit system is designed in accordance with latest Solas and classification society requirements. The davit is intended for lifeboats on ships and similar installations where single point swing-out davit arms offer the optimum solution for launching conventional lifeboats.

The davit system comprises two davit arms, a davit structure and an electrically powered winch operating two wire falls. The winch is deck mounted. The lifeboat is normally boarded in the stowed position.

The system provides:

  • Gravity lowering of the loaded lifeboat independent of external power supply.
  • Retrieval of lifeboat with crew of three persons with electric power.
  • Retrieval of the lifeboat by manual hand cranking.
  • Optional approval, according to latest Solas, for rescue boat davit function.
Structural steel S355 or equivalent
Outfitting steel : S235 or equivalent
Paint system : Sandblasted to Sa 2.5, painted with 1 x 50µ DFT Zink Epoxy Primer.
Optional painting according to customer requirement
Max lifting : SWL 60kN max.. Adjusted to actual boat weight.
Max lowering : SWL 90kN max.. Adjusted to actual boat weight.
Lifting speed lifeboat : Approx. 5m/min
Lifting speed rescueboat : Approx. 18m/min
Dead Ship lowering speed : 50 - 60 m/min
Maximum operational list and trim : ±20° / ±20°
Operational temperature range : -20°C to +50°C

Winch data
Winch : Electric driven. SOLAS approved
Hook distance between wirefalls  : Adjusted to boat size.

Power consumption
Total power consumption max load  rescueboat  : TBA
Total power consumption max load lifeboat : 22kW Approx. May wary with different winches
Power supply : 380V to 420V and 690V / 3Ph / 50Hz 
440V to 480V and 690V / 3Ph / 60Hz
Heating element : 220V / 25W in motor

Typical specification - subject to revision according to customer requirement.
All products subject to continuous review. Norsafe reserve the right to change specification without prior notice.