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Plastic pens

The world´s leading pen supplier

Polarcirkel, the most recognized brand in aquaculture, invented the plastic pen concept in Norway in 1974 and has since supplied more than 45,000 pens worldwide. The pens 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 pen designs are carried out by our professional TnD 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.

The world´s leading pen supplier

A WELL PROVEN CONCEPT

The Polarcirkel pens have a proven track record for use in rough weather, such as here on Norway’s stormy coastline at 70° North.

SAFE AND STABLE PLATFORM

All Polarcirkel pens are available with safe and sturdy walkway sections, as well as a strong built-in suspension system for sinker tubes.

STATE-OF-THE-ART MACHINERY

Sophisticated machinery produces pipes in a wide range of models. The pens are assembled by highly experienced and certified personell.

TESTED IN ARCTIC AREAS

Polarcirkel PE brackets are tested in arctic areas to withstand extreme icing, such as here in the Russian Sea.

DECADES OF EXPERIENCE

AKVA group (Polarcirkel) invented the plastic pen in 1974, and has since then supplied more than 45,000 Polarcirkel pens.

DEVELOPMENT

The new "flagship", Polarcirkel 630, has 63 cm diameter on the floating pipe and up to 240m pen circumference.

UNIQUE FEATURES

A well proven concept of flexible pen design

Strong and rigid PE hand rails.
Nylon/Dyneema nets or EcoNet with PET mesh.
All-rope solution.
No shackles or bolts that can corrode or damage the net.
Sliding deadweigth principle with minimal wear and tear.
PE brackets with extra long durability and simplified cleaning.

UNIQUE FEATURES

A well proven concept of flexible pen design

Strong and rigid PE hand rails.
Nylon/Dyneema nets or EcoNet with PET mesh.
All-rope solution.
No shackles or bolts that can corrode or damage the net.
Sliding deadweigth principle with minimal wear and tear.
PE brackets with extra long durability and simplified cleaning.

The nets are easily connected to rugged PE plastic brackets. No metal parts that will create corrosion problems. The PE brackets have longer lifespan and are easy to clean.

New recessed connections inside the walkway for bridle, sinker tube or security rope for nets.

The Polarcirkel Sinker Tube consists of a 200-400mm heavy walled PE pipe filled with chain or wire rope at specified weight.

Rugged, galvanized net rods, hooks and railings

STRONG BRACKETS

Extensive use of PE (Polyethylene) in our PIM (Pressure Injection Moulded) brackets eliminates corrosion, minimizes expensive and difficult maintenance, and substantially increases pen lifespan compared to steel brackets. This is especially important in areas with high salinity, warm water temperatures and choppy seas.

STRONG BRACKETS

STRUCTURAL STRENGTH

Polarcirkel brackets are 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.

STRUCTURAL STRENGTH

PREVENT ICING

For areas prone to icing, such as Norway and Canada, there is another critical advantage of the Polarcirkel PE brackets: it prevents icing. Icing is a dangerous safety issue for all floating structures, including pens. Heavy ice overloads the pen, reduces stability and jeopardizes overall pen integrity. As the name indicates, the Polarcirkel pens are well suited for extreme arctic conditions!

PREVENT ICING

Pen Models

The most sold Polarcirkel models are the circular pens in 315, 400, 450, 500 and 630 mm floating pipes with circumferences from 60 - 240 metres.

PRODUCT SPECIFICATION

Cage Models:	225/250	315	400	450	500	630	Comments
Cage sizes – Floating pipe diameter:	225/250mm (9”/10”)	315mm (12”)	400mm (16”)	450mm (18”)	500mm (20”)	630mm (26”)	Imperial sizes to be confirmed.
Cage sizes – Standard circumferences:	40 - 90m (130 - 300’)	60 - 100m (200 - 330’)	90 - 160m (300 - 530’)	120 - 160m (400 - 530’)	130 - 200m (430 - 660’)	160 - 260m (530 - 860’)	New from 2019: The circumference is measured on the inside of the inner floating pipe.
Cage sizes – Standard diameters:	13 – 29m (42 – 94’)	19 – 32m (63 – 104’)	29 – 51m (94 – 167’)	38 – 51m (125 – 167’)	41 – 64m (136 – 209’)	51 – 83m (167 – 272’)	At centre of inner floating pipe.
Center - center distance between floating pipes:	52cm (20”)	66cm (26”)	85cm (33”)	100cm (39”)	110cm (43”)	140cm (56”)	-
Bracket – PE Injection Moulded (new PIM Type):	*	Yes	Yes	Yes	Yes	Yes	PIM Bracket (Pressure Injection Moulded Bracket) with plastic uprights.
Connection for bird net support poles:	Yes	Yes	Yes	Yes	Yes	Yes	Available as option.
Standard distance between brackets:	2m (6’ 7”)	2m (6’ 7”)	2.5m (8’ 2”)	2.5m (8’ 2”)	2.7m (8’ 6”)	2.7m (8’ 6”)	Can be customized to fit nets.
Dimension – PE Handrail Upright:	125mm (5”)	125mm (5”)	160mm (6,5”)	160mm (6,5”)	160mm (6,5”)	200mm (8,1”)	-
Dimension – Handrail Pipe:	110mm (4,5”)	110mm (4,5”)	140mm (5,5”)	140mm (5,5”)	140mm (5,5”)	180mm (7,3”)	-
Net hook on uprights:	PE (SS opt.)	PE (SS opt.)	Stainless Steel (12mm)	Stainless Steel (12mm)	Stainless Steel (12mm)	Stainless Steel (12mm)	One single hook per upright included.
Polystyrene Safety Floatation added:	Only inner pipe	Only inner pipe	Only inner pipe	Only inner pipe	Only inner pipe	Only inner pipe	Custom hooks available
Available with – Secondary Safety Chain (redundancy):	Inside outer pipe	Inside outer pipe	Inside outer pipe	Inside outer pipe	Inside outer pipe	Inside outer pipe	Available in all floating pipes on request.
Materials used – PE80 & PE100:	Yes	Yes	Yes	Yes	Yes	Yes	Continuous internal safety chain inside the outer floating pipe for extra safety
Norwegian Standard – NS9415 Certified:	Yes	Yes	Yes	Yes	Yes	Yes	The Polarcirkel factory is ISO 9001 and ISO 14001 certified.
Available as Two-Ring Cage:	Yes	Yes	Yes	Yes	Yes	Yes	Mandatory for Norway only.
Available as Three-Ring Cage:	Yes	-	-	-	-	-	Standard Cage
Available with Sinker Tube:	Yes	Yes	Yes	Yes	Yes	Yes	-
Avail. with Walkway Decking:	Yes	Yes	Yes	Yes	Yes	Yes	Mainly used for 315 model and up.
Avail. as Submergible Cage:	Yes	Yes	Not yet	Not yet	Not yet	Not yet	Please ask for specific details.

* Polarcirkel 225/250 are delivered with the original type of the PE injection moulded bracket.

DOWNLOAD PRODUCT SPECIFICATIONS

SAFETY

Polarcirkel offer an optimal secondary safety chain inside the outer floating pipe. This will serve as an unbreakable barrier in case the pen integrity is severely compromised. Keeping the chain inside the pipe leaves it out of the water until needed and maintains a clean exterior pen layout. All this makes the Polarcirkel pens the safest and most escape proof pens on the market!

SAFETY

CERTIFIED

All Polarcirkel Pens are manufactured and assembled in accordance with AKVA group’s Quality Assurance System (ISO 9001), which is certified by DNV (Det Norske Veritas). All pens in Norway are designed in accordance with NS 9415 (Norwegian Standard 9415 for pen farming equipment to prevent fish escape).

CERTIFIED

ACCESSORIES

A wide range of integrated accessories are available for the Polarcirkel pens, including: net hooks, center support stands, anchoring systems, redundancy systems, nets, pipes, camera systems, sensors, wireless network, rotor spreaders, pen lighting etc.

ACCESSORIES

A wide range of accessories

HOOKS

Various types of net hooks are now available. The system simplifies net handling on the pens and provides a secure attachment point for the nets.

MOORING SYSTEMS

Most plastic pens are moored in a grid system and include sinker tube, center support stand, feed system/ barge, cameras and sensors.

ANCHORING CONNECTORS

The new connectors eliminates the weak points typical of steel brackets: Corrosion, damage to work boats, sideways jamming, icing loads etc.

CENTER SUPPORT STANDS

Center support stands keeps the bird net off the water. Standards sizes from 4m - 5m height. Other heights can be delivered on request.

CARTWHEELS

Polarcirkel ”Cartwheels” are offered with circumferences from 30 to 72 meters.

Pens NETS

Standard knotless netting, Super netting, Hexagonal, Dyneema netting, nylon in knottet netting and non-fiber EcoNet are some of the net solutions.

BIRD NETS

Top nets in nylon for bird protection can be offered in various materials and sizes.

FEEDING PIPES

A wide range of high quality and durable Polarcirkel Feeding Pipes are available in various dimensions, wall thicknesses and coil lengths.

STRONG RAILINGS

Polarcirkel pens are known for their strong railings and high reserve buoyancy, which is crucial in case of sudden excessive net loads or icing.

An experienced sales and service team worldwide

AKVA group's international team of professionals knows what is important for your success in the aquaculture industry. Our experienced technichians, service and sales staff will be your partner in the whole process, from planning to production. We have dedicated personell that can assist you all over the globe.

An experienced sales and service team worldwide

CHOOSE ANOTHER CATEGORY

PLASTIC pens

The Polarcirkel Pens have a proven track record for use in rough weather, such as here on Norway’s stormy coastline at 70° North.

STEEL pens

Wavemaster Steel Pens are available in a wide range of models, single- or double string systems and sizes up to 40x40m to suit individual needs.

NETS

AKVA group offer several types of nets for your pens. Both traditional and proven fibre nets, as well as the innovative and promising non-fiber EcoNets.

ANCHORING & MOORING

Most plastic pens are moored in a grid system and include sinker tube, center support stand, feed system/barge, cameras and sensors.

ANCHORING AND MOORING

Our innovative mooring connector system simplifies the mooring process and improves the structural strength of the pen when moored at the site. All anchoring connections and components are NS9415 certified.