Specialized Fishing Vessel Power
MAN common-rail technology allows fuel consumption flexibility; company also supplying control systems
Norwegian shipping company, Nyholmen AS, has chosen MAN main and auxiliary four-stroke engines to power the Kvannøy, a 77.25 m purse seiner/trawler. The vessel will be constructed at the Karstensens Skibsværft A/S shipyard in Skagen, Denmark, and is due for delivery in June 2015.
Nyholmen and Karstensens have chosen a hybrid propulsion package that features a MAN 6L32/44CR main engine, which produces 600 kW/cyl. MAN said the six-cylinder version – 32 cm bore and 44 cm stroke – is rated at 3.6 MW and uses the company’s common rail technology, which enables the flexible setting of injection timing, duration and pressure for each cylinder. This flexibility allows the 32/44CR’s fuel consumption and emissions to be optimized at any point on its operating profile, the company said.
The Kvannøy is specified to run on marine diesel oil (MSD/MDO). However, MAN said the 32/44CR’s common-rail injection system is designed for operation using more demanding fuels, including heavy fuel oil (HFO) with viscosities up to 700 cSt at 50°C and fuel-injection temperatures up to 150°C.
Two MAN 9L16/24 gen-sets, each delivering 940 kWe, will deliver auxiliary power for the hybrid propulsion system, the first time MAN medium-speed powered gen-sets have been employed aboard a fishing vessel of this size.
MAN will also supply its Alphatronic 3000 propulsion control system, including the ECO Speed Pilot for optimal voyage planning and speed setting.