Collaboration sees the delivery of first ever double-ended ferry.
By
Rebecca Gibson |
A collaboration of three companies has seen the delivery of the first ever double-ended ferry with Rim Driven Azimuth Thrusters and electric shafts. Norwegian ferry owner and operator Fjord1 MRF, in collaboration with Inpower and Brunvoll, has completed installation and testing of the novel propulsion system for the Eiksund ferry.
The vessel has two Azimuth Rim Driven Thruster (RDT) units developed and delivered by Brunvoll, one unit at each end. A company representative said that this was the first ever main propulsion rim driven azimuth thrusters to be installed on a ship for commercial operation.
Extensive testing has been carried out to validate the new propulsion system quantitatively and qualitatively, demonstrating operation throughout the complete speed range by varying the speed of the connected diesel engine. The thrusters enable variable speeds by applying a true electric shaft, with the thruster speed controlled directly by the speed of the diesel generators. Power loss associated with regular azimuth thrusters is reduced using the new technology. The drive solution, patented and delivered by Inpower, is also a first of its kind. The project has had the support of Innovation Norway.
Fjord1 MRF technical director Glenn Sandberg said: “The sea trials have confirmed that the new propulsion system meets our expectations. This includes reduced fuel consumption, improved manoeuvring capabilities and lower noise and vibration.” The ferry was approved for commercial service.