Skip to main content

NORWEGIAN COMPANIES DESIGN LOW-CARBON AQUACULTURE VESSEL

NORWEGIAN COMPANIES DESIGN LOW-CARBON AQUACULTURE VESSEL

Friday, April 9, 2021 

HAV Design has developed a live fish carrier, said to offer the smallest climate and environmental footprint in the world per kilo of transported salmon.

The boat has been ordered by Frøy and will be put into operation for Cermaq after delivery. HAV Design has long experience of R&D work on energy-efficient ships. With this new contract, the company has created a concept resulting in reduced climate emissions, in line with the climate plan for 2021-2030 that the Government recently presented.

Senior designer at HAV Design, Kjetil Myren, 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."

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 6,000m3 divided between four cylindrical tanks. The vessel has been developed in close cooperation with Frøy and Cermaq. Cermaq has had Steigen, a Havtrans ship, in operation for many years, and has seen how the fish density can be increased and still achieve a lower level of stress and oxygen consumption than in conventional tank systems.

‘With cylindrical tanks, we can carry more fish while also enhancing fish welfare,’ said Frode Holmvaag of Cermaq.

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

The energy production- and propulsion system on board the vessel will be delivered by Norwegian Electric Systems (NES). The energy production system consists of a DC system powered by batteries and generators running at varying speed. According to Geir Larsen (CEO, 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 important for optimal operation of energy production on board 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.

NES will deliver an integrated bridge system (INS) based on NES’s Raven INS and equipped with dynamic positioning. This is the seventh contract between HAV Design & Solutions and Frøy. The contract value for HAV Design and NES is about NOK 90m.

Reader Comments (0)

There are currently no comments on this article. Why not be the first and leave your thoughts below.

Leave Your Comment

Please keep your comment on topic, any inappropriate comments may be removed.

Return to index