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Friday, October 22, 2021 

A new live fish carrier, 'Færøysund', built at shipyard Aas Mekaniske Verksted, for North Salmon Service, is equipped with a Brunvoll hybrid propulsion system.

The system comprises CP propeller and reduction gear, driven by two PM (Permanent magnet) motors, with power from four gensets and a battery pack, as well as Brunvoll tunnel thrusters and a Brunvoll Control system with DP and Joystick operation.

The company considers that hybrid propulsion is well suited to the operating profile of a live fish carrier.

Jonny Hansen, co-owner and technical manager, North Salmon Service, said: "We wanted a hybrid system as we spend long periods by the cage with need for electricity to perform our work. It is then an advantage to have electric operation including batteries. With four gensets we can overhaul one engine during sailing. We may also use the battery for peak shaving and thus avoid starting an extra engine. This gives us flexibility and saves start-ups and running hours of the gensets." 

Geir-Arne Kaspersen, VP Sales, Brunvoll, said: "The Færøysund system is a typical modern hybrid propulsion system for energy efficiency. We see an increasing interest for hybrid systems, due to the possibility for reduction in fuel consumption by optimising the utilisation of different energy sources to the vessels operating condition.",

DP has traditionally been widely used in offshore applications, but is gaining popularity in aquaculture and fishing.

Hansen added: "When working close to large cages in exposed waters, we have to stay 8-10m from the cage during loading and unloading. During such working conditions, there is a need for DP system to keep the vessel in place in rough seas."

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