Engines ready for heavy lift vessel BorealisVessel & ROV News // May 5, 2009
Nordic Heavy Lift says the Rolls Royce diesel engines and German-built AVK generators for its heavy lift/construction vessel Borealis are ready for instalaltion in the newbuild.
The diesel engines were built in Bergen Norway and have a nominal output of 5,675kW each. The dual fuel engines will not only power the seven high voltage main and retractable thrusters, the electric crane engines and the anti-heeling pumps, but all low voltage electric engines throughout the vessel as well.
The vessel's DP3 propulsion system includes two 5.5MW fixed pitch azimuth main thrusters and four 3.2MW retractable azimuth thrusters plus one bow tunnel thruster of 2.5MW.
The total power output of the diesel engines of almost 36,000kW provides more than sufficient margin to meet any future power demand such as the possible installation of pipelay equipment.
The power of the Rolls-Royce diesel engines will be distributed by an IMESA-built main switch system delivering 6.6 kV and 440V/220V. All underlying switch systems are designed and built by Imtech Marine & Offshore (Netherlands).
Distribution of power is fully computerised, automatically switching between more than five thousand critical points. This makes the HLCV Borealis even more sophisticated than the largest airliner to date, said the company.