Norway’s Brunvoll AS has signed a contract with Sefine Shipyard in Turkey for the supply of propulsion, manoeuvring and control systems for two large live fish carriers for Intership AS. The vessels have been designed by Salt Ship Design AS.
“The vessels have hybrid systems with substantial battery packs that meet the strictest environmental requirements, and they are further fully equipped with Norwegian equipment. When choosing the propulsion concept, emphasis has been placed on using known technology well proven in other segments that are also operating under demanding conditions, such as offshore,” Intership COO Kjetil Opshaug said.
They will be equipped with complete Brunvoll propulsion, manoeuvring and control systems, although there will be different propulsion system configurations on each. The largest vessel of 6,500 cubic metres is to be equipped with two azimuth propulsion thrusters and two bow thrusters, while the 4,000 cubic metre vessel is to be equipped with a CP propeller and twin-in single-out gearbox, two bow thrusters and two stern thrusters.
Both vessels will have the BruCon control system for propulsion and manoeuvring, and DP system (Dynamic Positioning) to enable loading and unloading at distance from the cages in rough sea.
Brunvoll explains that live fish carriers need space-saving equipment and good flexibility both in physical arrangement in the engine room, and in engine power to meet different operating modes.
It also advises that its TS800 is a compact twin-in single-out reduction gear designed for two electric motors and a propeller, where the propeller can be driven by one or both of the electric motors depending on power requirements.
The gear arrangement can be designed for front or aft mounting of the engines, thus adapting to the available space in the engine room. A conventional CP propeller system ensures good efficiency for ships with varying operating profiles, for example different cargo conditions in transit operation.
Meanwhile, Brunvoll’s azimuth propulsion thrusters are designed for high efficiency and good manoeuvrability and will aim to provide optimum efficiency during manoeuvring and in DP operations.
