The Norwegian company, Herøyhav AS, has taken delivery of a 69.95-m trawler/purse seiner from Karstensens Shipyard, Denmark. The vessel is hallmarked by its very flexible propulsion package that offers a number of fuel-saving power modes to accommodate the different fishing patterns it will encounter at sea.
The ‘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
The propulsion package consists of a MAN 9L27/38 engine and a two-speed reduction gear that drives a MAN Alpha 4, 200 mm diam. 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.
The Herøyhav’s propulsion system has several power modes: both diesel-mechanical,
diesel-electrical and hybrid combinations. Its auxiliary generators can deliver 1, 500
kW auxiliary power to the hybrid system, which – in combination with the main-engine
power of 3, 285 kW – offer a total propulsion output of 4, 785 kW (~ 6, 500 hp) for
trawling or full-speed steaming.
The following ship speed / power modes were verified during sea trials:
• 11.6 knots – 1, 400 kW (diesel-electric, variable propeller speed)
• 14.0 knots – 2, 400 kW (diesel-electric, fixed propeller speed)
• 15.5 knots – 3, 285 kW (diesel-mechanical)
• 16.6 Knots – 4, 785 kW (diesel-mechanical + electric boost)
Environment – no oil to water
As a result of the fuel-saving propulsion setups for the various operational modes, the
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
About Karstensens Shipyard
Karstensens Skibsværft A/S is a modern shipyard with some 250 employees at its
newbuilding and repair/service facility in Skagen, Northern Jutland. The yard is
capable of building a broad variety of ship types up to a length of circa 135 metres,
including fishing vessels, tankers, freighters, ferries, naval offshore patrol vessels, and
other special-purpose vessels. The yard has built over 400 vessels since its birth in
1917 with Herøyhav being designated hull number 423.
About MAN Diesel & Turbo
MAN Diesel & Turbo SE, based in Augsburg, Germany, is the world’s leading provider of large-bore diesel engines and turbomachinery for marine and stationary applications. It designs two-stroke and four-stroke engines that are manufactured both by the company and by its licensees. The engines have power outputs ranging from 450 kW to 87 MW. MAN Diesel & Turbo also designs and manufactures gas turbines of up to 50 MW, steam turbines of up to 150 MW and compressors with volume flows of up to 1.5 million m³/h and pressures of up to 1, 000 bar. The product range is rounded off by turbochargers, CP propellers, gas engines and chemical reactors. MAN Diesel & Turbo’s range of goods includes complete marine propulsion systems, turbomachinery units for the oil & gas as well as the process industries and turnkey power plants.
Customers receive worldwide after-sales services marketed under the MAN PrimeServ brand. The company employs around 14, 000 staff at more than 100 international sites, primarily in Germany, Denmark, France, Switzerland, the Czech Republic, India and China. MAN Diesel & Turbo is a company of the Power Engineering business area of MAN SE.