SW 50 Davit Interconnected for GES 50

The system consists of interconnected skid way structures and a lifting beam where a trolley and an electric winch is installed (Crane class: 1Am according to FEM). The winch is used to lower/hoist lifeboat through an opening in the davit structure. Sideways movement of the trolley is without load. 

For this solution, it is intended that the trolley and winch are only installed on the lifting beam during installation of the lifeboats. When all lifeboats have been installed and tested, the trolley and winch can be removed and stored onshore. The winch is otherwise fully winterized and equipped with DNV 2.7.3 approved lifting lugs.

The system provides:

  • Free fall launch of the fully loaded lifeboat.
  • Free fall launch of the fully loaded lifeboat with 17º list and 17º trim, completely
    independent of any power supply.
  • Recovery of the boats.

GA drawing for GES 50MKIII freefall boat in SW50 davit, TBA.

Materials    
Structural steel : S355 or equivalent suitable for -20ºC
Outfitting steel : S235 or equivalent suitable for -20ºC
Paint system : Sandblasted to Sa 2.5, painted with 1 x 50µ DFT Zink Epoxy Primer
Optional painting according to customer requirement
Capacity    
Max Lifting : 26500kg +10% overwight
Lifting speed Lifeboat : Approx. 5-10 m/min at max load
Maximun operational list and trim : ±20° / ±10° & ±17° / ±17°
Operational temperature range : -20°C to +40°C

Winch data
 
Winch : Electric driven

Power consumption
   
Total power consumption max load lifeboat : TBA
Power supply : 380V to 420V and 690V / 3Ph / 50Hz
440V to 480V and 690V / 3Ph / 60Hz
Heating element : 220V in motor

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