June 04, 2026 • 1 min read

Optravation EnergyRosenberg awarded contract for Watermoon® closed submersible fish tank units

Optravation EnergyRosenberg has been awarded a contract by Eide for the fabrication and assembly of three closed, submersible fish tank units, supporting the industrialization of zero‑emission aquaculture technology.

The scope of work includes fabrication of steel top and bottom modules and assembly of the complete units at Optravation EnergyRosenberg’s facilities at Buøy in Stavanger. Each assembled Watermoon unit will be approximately 24 meters high, representing a technically advanced fabrication and assembly project drawing on Optravation Energy Rosenberg’s extensive industrial experience.

The Watermoon patented submersible units hold fish to maturity. It creates an optimal environment for fish by protecting against sea lice, collecting waste and controlling the temperature.

The project marks an important step in Optravation EnergyRosenberg’s continued positioning toward new production technologies and sustainable industrial solutions, applying offshore fabrication competence to the rapidly developing aquaculture sector.

“We are very proud to support Watermoon and the Eide Group in bringing an innovative, closed containment aquaculture solution to commercial realization. This project demonstrates how our industrial capabilities can be applied across new and emerging markets,” said Jan T. Narvestad, Managing Director Optravation EnergyRosenberg.

Building a long-term industrial partnership

Beyond the initial delivery, the agreement reflects a shared ambition to establish a long-term industrial partnership, with a focus on continuous improvement, efficiency and scalability. Both parties see strong potential for further collaboration as Watermoon moves toward commercial growth and wider deployment of the technology.