Cleaner and safer operation

An innovative triple screw hybrid mechanical/electrical propulsion system combines a central controllable pitch propeller (CPP) with two Azipull thrusters with nozzles for the best in propulsive efficiency. The system allows the UT790 CD to use the minimum fuel to do the job in its various operating modes, with maximum flexibility.
Modes range from sailing in diesel-electric mode at 10 knots and sailing in mechanical mode using only one engine at 14 knots, to combined systems for maximum pull and an efficient system with a high level of redundancy for dynamic positioning. Click to view main modes.
Rolls-Royce Bergen engines meet Clean Design class rules without further exhaust cleanup. Catalytic converters can be fitted to the generator sets, giving ninety per cent NOx reduction.
With its special redundant drive solution, the forward azimuth thruster can be powered by two independent switchboards, enabling the UT 790 to achieve the same DP2 capability with three thrusters than conventional solutions with four.
The UT 790 CD comes with a full Rolls-Royce Safer Deck Operations (SDO) system, including anchor-handling cranes, chain wheel changer and torpedo anchor-handling system. SDO introduced four years ago is seen as standard equipment on high-end anchor handlers. It improves safety by keeping the crew away from danger zones, while maintaining operational flexibility and efficiency.