The world´s leading cage supplier
AKVA group is the world's leading supplier of both plastic and steel cages. Polarcirkel, the most recognized brand in aquaculture, invented the plastic cage concept in Norway in 1974, and has since supplied more than 45,000 cages worldwide. The cages are made from PE raw materials especially suited for the dynamic loads of the sea, and are available in a wide range of models, shapes and sizes to suit individual needs.
All Polarcirkel cage designs are carried out by our professional T&D department. Independent marine engineering consultants are also involved in advanced static and dynamic load calculations to ensure all designs meet or exceed expected real life loads as well as applicable industry standards.
Strong Polarcirkel brackets
Extensive use of PE (Polyethylene) in our PIM (Pressure Injection Moulded) brackets eliminates corrosion, minimizes expensive and difficult maintenance, and substantially increases cage lifespan compared to steel brackets. This is especially important in areas with high salinity, warm water temperatures and choppy seas.
Only strong and high quality PE is used for Polarcirkel brackets, while many suppliers use weak and low quality rotationally moulded Medium and Low Density Polyethylene. This makes the Polarcirkel brackets superior in terms of structural strength, durability and UV resistance. This is especially important in high energy offshore farm sites and areas with high UV radiation from the sun.
For areas prone to icing, such as Norway and Canada, another critical advantage of the Polarcirkel PE brackets is that they will not ice up as steel brackets do. Icing is a dangerous safety problem for all floating structures, including cages. Heavy ice overloads the cage, reduces stability and jeopardizes overall cage integrity. As the name indicates, the Polarcirkel cages are well suited for extreme arctic conditions!
The safest and most escape resistant cages on the market
Polarcirkel also offer an optimal secondary safety chain inside the outer floating pipe. This will serve as an unbreakable barrier in case the cage integrity is severely compromised. Keeping the chain inside the pipe leaves it out of the water until needed and maintains a clean exterior cage layout. Allt his makes the Polarcirkel cages the safest and most escape proof cages on the market!
Polarcirkel quality and certification
All Polarcirkel Cages are manufactured and assembled in accordance with AKVA group’s Quality Assurance System (ISO 9001) which is certified by DNV (Det Norske Veritas). All cages in Norway are designed in accordance with NS 9415 (Norwegian Standard 9415 for cage farming equipment to prevent fish escape).