New Feed Barge for high exposure sites

Many of the most experienced Norwegian salmon farmers come from a background in the fishing industry, and are used to severe weather along a rugged coastline from 60° to 70° North.
2015-feed-barge-for-high-exposureImage: The new Wavemaster AC600 PV feed barge at Eidsfjord Sjøfarm.

The North Sea and Norwegian Sea are well known for back-to-back gales and storms during fall and winter months.

Ola Helge Holmøy, owner of the salmon farming company Eids-fjord Sjøfarm AS and the fishing company Prestfjord AS, have long experience with advanced offshore trawlers capable of handling these conditions.

After acquiring two AF 400 Barges from AKVA group previously, they now wanted an even better and more seaworthy design, capable of operating in high exposure sites in Northern Norway. Their offshore fishing experience and specific requests lead to a feed barge looking more like a ship, longer and sleeker with reinforced bow design and deep V-shaped hull.

The idea of working with AKVA to design the feed barge based on our offshore fishing experience was to achieve better and safer working conditions for our farm crew at our most exposed farm sites in Vesterålen and Senja. With this construction, we will get better stability and a more comfortable movement in heavy seas. Thus enabling people to work and stay aboard the barge also in bad weather, says Roger Simonsen, Managing Director at Eidsfjord Sjøfarm AS. The process started with discussing the ideas with Jørn Sivertsen, Sales Manager at AKVA group – Nordic. We have worked with AKVA group and Jørn Sivertsen for many years, and got a very positive response to our idea of developing this new barge concept together.

The new Wavemaster AC 600 PV with its new bow design, V-shaped hull and full keel, is truly designed for tough and exposed sites, says Sivertsen. The V-shaped hull increases stability as a larger area of the hull will be in contact with the water all the time. This will reduce rolling and the risk of the bottom of the hull being slammed by large waves.

The barge has a feed holding capacity of 635 tons in 8 silos, and thereby will not depend on fre-quent feed deliveries which can be a challenge on rough sites.

Eidsfjord also requested large mort silage capacity in freestanding circular PE plastic tanks, totaling 65 m³ holding capacity. The V-shaped bottom also allows for easier cleaning down below. Rainwater is collected from main silo decks for the built-in pressure washers used for cleaning, while bilge pumps at the bottom of the keel pump the gray water into storage tanks.

The end-result looks very good, and seems to meet our expectations we had from the start of this project. We now have a barge that behaves very well in all sea conditions, and allow for uninterrupted feeding operations every day of the year. I would also like to take this opportunity to complement key staff at AKVA, Per Andreas Hjetland (COO-Nordic), Alf Kåre Ulfsnes (Barge Project Manager) and Jørn Sivertsen for a job well done in completing this new design with us, ends Roger Simonsen.