Built to Karstensen Shipyard’s own 75-metre, 16-metre breadth design, the newbuild is the latest in an ongoing series of new pelagic vessels for operators around the Northeast Atlantic.
Herøyhav has been delivered to owners Ronald Ervik, who also sails as skipper, siblings Gunn and Espen, and Rolf Jarle Ervik – who returned to Karstensen for the new vessel to replace the previous Herøyhav, which was completed at the same yard in 2013.
The new vessel’s steelwork was completed at the Karstensen Shipyard Poland in Gdansk and the hull was brought to the yard in Skagen for outfitting – with the handover at the beginning of July before Herøyhav sailed for Norway.
It’s designed to operate on conventional lines, fishing with pelagic trawl gear for blue whiting on deep water grounds, and with options to fish for herring and mackerel with either trawl or purse seine gear. The design process has been conducted in close collaboration with the owners, with Ronald Ervik and Marianne Vangsnes spending time at the yard during the outfitting process.
Herøyhav has 11 RSW tanks, providing a total of 2,500 cubic metres of carrying capacity, chilled to maintain catches in peak condition with a double PTG FrioNordica 2 x 1500 kW RSW system. C-Flow delivered the vacuum system with its twin 4,200-litre tanks.
The deck is laid out with a pair of net drums offset to port and aligned to the hydraulic stern gate with three hydraulic control pins, while the recessed net bin for the purse seine gear is on the starboard side.
Evotec supplied the electric trawl winch package, while the cranes and purse seine handling systems are from Storm Cranes. SeaQuest Systems supplied the two 20-inch fish pumps, each with a power cable drum and a hose reel.
The trawl winches are 70-tonne units, controlled via a Scantrol/Evotec autotrawl. The pair of net drums each have a 97-tonne pull. Evotec also supplied the 40-tonne tail-end winch, net sounder winch and an array of smaller winches, including the 39-tonne purse winches.
For purse seining, the Storm net hauler is a NH 1030-600 EL unit with a 40-tonne pull. Storm Cranes also supplied the NC-600 intermediate roller crane and the KB-1000R net crane, as well as the corkline and leadline stackers. The package further includes a KB-800 foredeck crane and a KB-600 fish pump crane.
Efficiently powered
The energy setup on board Herøyhav is tailored to suit its operating pattern, with a Wärtsilä package of 5200kW 8V31 main engine driving a 4200mm 4G1005 propeller via a two-step (750/130rpm) SCV 95-PDC58 reduction gearbox, also powering a water-cooled Marelli 3400kW/4250kVa shaft generator.
This is designed to provide all the power needed when purse seining, including running the 1400kW Brunvoll FU-74-LTC-2000 thrusters. For trawling, this meets propulsion requirements, and additional power can be derived when required from the two 940Kw and one 550kw Caterpillar auxiliary engines, which are arranged for parallel operation.
Herøyhav has a UPS/clean power system for 230V, so making it possible for the frequency float between 50 and 60Hz. This enables a 17% reduction in the main engine’s speed. The outcome is a highly flexible system that offers options for economic operation, plus it comes with a take-me-home function with a coupling between the main engine and gear to run the shaft generator as an e-motor for diesel-electric propulsion.
The standout feature of the wheelhouse is the Furuno BlueBridge system which can be customised by the user to particular modes of operation as required, displaying feeds from the big fishfinders in Herøyhav’s wheelhouse. These are Furuno equipment, with FSV-25, FSV-85 and FSV-75 sonars covering the ful range of frequencies, plus an FSV-38 echo sounder and a pair of Furuno Imagenex TS-360 trawl sonars. The CI-68 current log is also from Furuno, as are the radars and the SC-70 and SC-130 satellite compasses. The gyro and autopilot are from Simrad.
