Plastic Pens Built for the Future – Strong, Flexible, and Safe

Plastic pens have become the standard for modern aquaculture facilities, but the demands for strength, stability, and safety continue to rise. At Mørenot Aquaculture, we develop pen systems that combine advanced material technology with hands-on operational experience.

As pens are exposed to increasingly strong currents and waves, the requirements for materials and design are significant. Plastic offers unique advantages — low weight, flexibility, and no corrosion — but it must be properly dimensioned to withstand the dynamic forces of the sea.

“There’s a bit of friendly competition internally to work on the pen delivered by Mørenot Aquaculture. It has the widest walkway, making it possible to move around the pen safely without worrying about falling into the sea.”

Over several decades, Mørenot Aquaculture has built extensive experience in the production and installation of plastic pens. Every delivery is the result of close collaboration with fish farmers — from mapping the site and environmental conditions to installation and daily operation.

The pens are made from high-quality HDPE, designed to ensure optimal buoyancy and minimal deformation over time. Combined with proper mooring solutions, this provides a complete system with a high safety margin and predictable performance.

“With the right design, HDPE is a fantastic material for use in marine environments, and we have designed our plastic pens to withstand some of the most exposed locations in the aquaculture industry.”

In addition, Mørenot Aquaculture offers customized solutions for exposed sites where currents, wind, and waves demand extra robustness. Through calculations and simulations, the design is optimized to achieve maximum stability and minimal maintenance.

Learn more about our pen systems here:
👉 https://www.morenot.com/aquaculture/products/pens