Our approach is holistic. C onsidering the laws of nature; physics (gravity, hydro dynamics, material properties), chemistry (water properties, nutrients & organic salts), biology (species characteristics, welfare, health, pathogens, parasites, predators) climate (sea state, temperature, moon phases, seasons) we design and build fishfarms.
The FOUR dimensions with improved Sustainability and E nvironmental impact are:
The circular production approach is based on strong materials with a long life span Combined with a module based design , enabling efficient exchange of equipment when worn-out or out-dated. GRP (Glass reinforced plastic) is the material of choice , with an expected (escape free) life span of 40 to 60 years. We build for 20 years of certified use after which the structure will be docked, stripped, repaired and new equipment installed for productive use for another 20 years when the procedure is repeated till the plant is recycled. Equipment is kept in step with the technological development . Result: Effective life cycle management , Minimized cost pr kg fish produced and Minimized environmental impact .
To optimize fish health and welfare a flow of temperate water with high levels of Oxygen (O2 ) and low levels of Carbon Dioxide (CO2 ) is used. A speed of 1 fish length pr second is achieved with water collected below the lice belt and delivered back at about the same depth after flowing through the fish chamber . The flow is driven by low energy thrusters. The GRP walls protects farmed fish from surface pathogens, parasites, and predators. Speed keeps the fish focused on swimming and eating – reducing disputes. Mortality below 1,0% for a post smolt period of 100 to 150 days is normal. Low mortality and high quality will contribute to increased value creation at harvest. E xercise results in a robust fish with lower mortality, higher growth and a Netpen phase as short as 7 months.
Through a circular approach to operations, we achieve: Minimal use of additives such as (O2 ) in production – due to high flow of good quality fresh sea water. Minimal feed waste , achieving a Feed Conversion rate (FCR) * of 0,8-0,9; reducing feed costs. We collect faeces and dead fish in traps along the bottom of the chamber. 100% of dead fish and 60 to 95% of solids – depending on technology version are collected. Our solutions and technology for collecting discharge is in constant development/improvement. We deliver solids t o available circular value chains. Contributing to development of future income streams .
We protect the environment and life in the sea from our operations by minimizing farm discharge. Dissolved nutrients , organic salts and the 5-40% of solids not collected is diluted to very low concentrations and reintroduced at a depth of 20 to 40 meters . Financial gains wi ll materialize when taxonomy is implemented in aquaculture.
Our Preline Extended smolt farm has been in production since May 20 15, 3 million + Postsmolt in 17 batches. 18th batch in production. Documentation of results are available.
* FCR = Kg feed / Kg fish produced