salmon carrierHAV Design’s energy efficient salmon carrier will also improve fish welfare. Photo: HAV Design

HAV Design has designed what is believed to be the world’s most environmentally friendly salmon carrier.

The vessel, ordered by Frøy for operation by Cermaq, has an energy-efficient hull and cylindrical tanks that enable the ship to carry more fish per cubic metre, while achieving a lower level of stress and oxygen consumption.

Kjetil Myren, senior designer in seafood at HAV Design, said: “We have drastically reduced energy consumption on board the ship. And when the tanks can also hold more fish, while enhancing fish welfare, we are confident in saying that this is the live fish carrier with the smallest climate and environmental footprint in the world per kilo of transported salmon.”

Battery and lower energy consumption

The energy production- and propulsion system onboard the vessel will be delivered by Norwegian Electric Systems (NES).

The energy production system consists of DC – system powered by batteries and generators running at varying speed. According to Geir Larsen, CEO of NES, this means lower fuel consumption per kWh produced and reduced noise level from the ship.

The ship will be prepared for the use of climate-neutral biofuel, and the onboard battery pack combined with large shore power capacity, enables it to operate for longer periods on green, renewable energy. The battery system is also important for optimal operation of energy production onboard the vessel and improves system safety, which is critical for fish welfare.

Residual heat from the engines’ cooling water is used for onboard heating, while heat from the exhaust and cooling water is used to produce electric power – both contributing to even better energy efficiency.

More space

The new design is a further development of the Havtrans series, through which the company has developed expertise in designing live fish carriers with cylindrical tanks after delivering six such designs since 2014. This new design’s capacity is nearly doubled, with a tank volume of 6,000 cubic metres divided between four cylindrical tanks.

The new design also has more deck space that can, for example, be used for delousing equipment. The Hydrolicer system can treat 600t of salmon per hour and the freshwater production system used to treat the fish can produce 6,000t of fresh water a day. It has a high sorting capacity, and a closed system for infection-free transport of large quantities of fish is in place.

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