‘Herøyhav’ for Norway

Herøyhav was ordered by the Ervik family of Fosnavåg, Norway, in January 2012 and replaces a previous vessel of the same name from 1999. The new fishing vessel has been updated with modern equipment that provides flexible and economic operation, both for pelagic trawling and purse-seine fishing in the Atlantic adjacent to Norway’s coast.

The propulsion package consists of a MAN 9L27/38 engine and a two-speed reduction gear that drives a MAN Alpha 4,200mm diameter ducted propeller. The propeller nozzle is a customised MAN Alpha AHT design. MAN Diesel & Turbo also supplied its Alphatronic 2000 propulsion control system, including the ECO Speed Pilot for optimal voyage planning and speed setting.

A hybrid configuration is a fuel-efficient and flexible power-and-propulsion system with high redundancy. Hybrid propulsion systems are a combination of electric propulsion and diesel drive, and enable ships with variable power requirements to run at high propeller efficiency. A large number of operational modes are available, which enable the engine and propeller to run optimally over a wider power range.

Herøyhav’s propulsion system has several power modes: both diesel-mechanical, diesel-electrical and hybrid combinations. Its auxiliary generators can deliver 1,500kW auxiliary power to the hybrid system, which – in combination with the main-engine power of 3,285kW – offer a total propulsion output of 4,785kW (~6,500hp) for trawling or full-speed steaming.

As a result of the fuel-saving propulsion setups for the various operational modes, Herøyhav also limits exhaust gas-to-air emissions. Another, remarkable environmentally friendly feature is its coated propeller shaft, installed in combination with a water-lubricated stern-tube system, that eliminates any risk of sealing damage and any leakages of stern-tube oil to the sea in the event of impact with fishing gear wires.