About us

For business, for the environment

We are the leading provider of environmentally friendly in-water hull cleaning services to the worldwide shipping industry. Our revolutionary technology is the solution that cuts operational costs, carbon emissions and the spread of alien invasive species – the key to the industry`s quest for greater sustainability.


2013 – Shipping industry award: Young Entrepreneur Award

2013 – Environmental award: WWL Orcelle Award

2014 – GST Awards: Green Ship Technology of the year

2016 – Global Freight Awards: Product Innovation Award

2018 – Seatrade Awards 2018: Fuel Efficiency Award

2018 – Energy Globe National Award

Where it started

ECOsubsea was established by the Norwegian brothers Tor M. Østervold and Klaus Østervold in 2008. 

Our vision was from the very beginning to address the problem of biofouling and to safely transform a pressing environmental problem into a business profit for shipowners and ports, by making shipping greener.

With head-office based in Austevoll, Norway and branch office in Oslo, the first pilot station was tested and approved in 2012.

From 2014 we were operating in the Port of Southampton and in 2018 our international Centre of excellence were opened. 

For over a decade, we have fine-tuned our innovative and advanced technology and earned licenses for operating in ports with strong environmental benchmarks.

We combine domain expertise with unique technology to provide a solution fully complying with the strictest environmental regulations and are with our services, setting a new standard to cleaning operations and biofouling management for the global maritime industry.

ECOsubsea is the go-to enabler of sustainable marine activities

that creates solutions to the growing ESG market of biofouling.

  • We recognize that efficient cleaning of ship hulls is better for the water quality in the port and reduces CO2 emissions and fuel costs.” The advantages of initiatives like ECOsubsea will enhance the sustainability of the entire transport chain

    Irene Bennett,
    Business manager
    The port of Rotterdam’s Breakbulk

The Execution Team

Tor Mikal Østervold

  • Founder and CEO since 2008
  • MSc International Shipping (Plymouth)
  • Working with ECOsubsea since the start
  • Technology development, fundraising, commercialization and business development.

Klaus Østervold

  • Founder and CTO since 2012 
  • MSc International Shipping (University of Plymouth)
  • Extensive experience in the international regulatory framework surrounding biofouling and hands on knowledge to any technical details of ECOsubsea.

Ole Christian Troland

  • Working with ECOsubsea since 2016
  • MSc Industrial Economics and Tech Management (NTNU)
  • Experience from finance roles in global maritime corporation, with experience from strategy, business development, financing and IR.

Board of Directors

Jan Erik Korssjøen

  • Chairman of ECOsubsea since 2012.
  • Former CEO of Kongsberg Group and with extensive experience from national and international board positions.

Sveinung Økland

Board member
  • Boardmember since 2017. 
  • Previous Captain and now Operations Manager at North Sea Shipping.

Klaus Østervold

Board member
  • Boardmember of ECOsubsea and Chairman of Stofi AS

Advisory Board

Roberto Giorgi

Chris Wiley

Trond Riiber Knudsen

ECOsubsea has received invaluable support from many people through the years, including some key advisors such as; Roberto Giorgi, founder and former CEO of Vships. Chris Wiley, Chair, working group Ballast water treatment, IMO. Trond Riiber Knudsen, founder and CEO of TRK Group AS, an Oslo-based investment and advisory firm since June 2015.
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