Subsea Protection Systems and Composite Solutions Provider

Founded in 2003, CSUB has established itself as a pioneering EPC (Engineering, Procurement, and Construction) supplier of composite products and solutions, catering to a diverse range of industries including energy, civil engineering, renewable energy, and aquaculture. With our headquarters in Arendal, Norway, we have grown to encompass HighComp, a distinguished brand within the aquaculture sector since its inception in 2006. Together, we form the CSUB Group, a company dedicated to innovation, quality, and sustainability in composite construction.

Our Expertise

Leveraging the unique properties of Glass Fibre Reinforced Polyester (GRP), our products offer superior durability, environmental benefits, and a design life of typically 50 years. GRP’s light weight, mechanical strength, chemical resistance, and low thermal conductivity make it an ideal replacement for traditional materials like steel, aluminum, and concrete. Our expertise spans the engineering, procurement, construction, and installation (EPCI) of large composite structures, including but not limited to:

  • Complex load-carrying structures for the energy and civil industries, such as subsea foundations and subsea protection covers.
  • Innovative solutions for the renewable energy sector.
  • Comprehensive composite solutions for both land and marine-based aquaculture, including fish tanks, LESS-STRESS™ bridges, and water treatment tanks.

Our Commitment

At CSUB Group, we pride ourselves on our ability to deliver tailor-made, innovative designs developed by our in-house engineering team. Our commitment to sustainability is evident in our choice of materials and processes, which aim to reduce CO2 emissions and environmental impact. Our two fabrication sites, each with direct access to a quay, enable us to efficiently serve clients worldwide.

Our Vision

As a leading global supplier and producer within our industries, our vision is to continue pushing the boundaries of what is possible with composite materials. Through continuous innovation, dedication to quality, and a focus on sustainable solutions, we aim to meet the evolving needs of our clients and contribute to a more sustainable future.


Karsten W. Johannessen

VP Sales

Mathias Berg

VP Sales

Jon Inge Brattekås


Urte Kaselyte Montvile


Silje Bartholdsen


Bjørn Fossestøl

VP Engineering

Pål Castberg

VP Projects

Anders Holm


Helene Hvalgård-Bakke


Helge Rasmussen


Asta Paulikiene


Claes William Olsen

CSUB Civil

Carl-Petter Halvorsen

SVP Business Development