Replenishment/Fuelling-at-sea systems (RAS/FAS)
The Rolls-Royce standard RAS systems is designed to transfer 2 tonnes at ship distances from 24 to 55m, (max. 61m) and at ship speeds between 10 and 16 knots. A new heavy replenishment-at-sea system (HRAS) has been developed that will permit loads of up to 5 tonnes to be safely transferred between ships.
This contrasts with the light jackstay rig, which is a simple manual system for the transfer of loads up to 250kg.
At the heart of each system is the AC powered jackstay winch that automatically responds to extremes of vessel movement once the tension is set. Where liquids and solids are required to be transferred at the same time, the dual capacity high performance rig is the ideal solution. A single control console controls fuelling and/or transfer operations.
- Astern refuelling rigs
- Large derrick rigs
- Dual purpose rigs
- Light jackstay rigs
- Moveable highpoints