Photo: Nicki Pløk, UNIFLY

Foss Maritime and Østensjø Rederi AS announce MOU to establish an SOV partnership

Foss Maritime LLC and Østensjø Rederi AS have signed a Memorandum of Understanding to
establish a partnership to provide domestic Service Operation Vessels (SOVs) to owners and
operators of offshore wind projects in US waters.

The new partnership brings together two companies with unrelenting focus on safe and
efficient operations. Both companies have proven history of excellent HSEQ results and
longstanding relationships with clients. With state-of-the-art vessel designs and proven
solutions to client needs, the combined capabilities of Foss and Østensjø will provide
outstanding services to the offshore wind industry.

Paul Gallagher, Vice President at Foss Maritime said, “After spending time in Europe engaging
with marine service providers, we are very fortunate to have developed this relationship with
the experienced team at Østensjø. We look forward to bringing the collective resources of our
two companies together to develop safe and cost competitive marine solutions for the offshore
renewables market in the United States.”

“Østensjø Rederi has several years of experience operating SOVs servicing offshore wind farms
across Europe. In Foss Maritime we believe we have found an ideal partner for adapting these
services to the American market. We look forward to expanding our offering to the US market,
and along with Foss, we aim to provide the highest quality service to owners and operators of
windfarms in the US;” stated CEO Kenneth Walland at Østensjø Rederi AS.

About Foss Maritime

Foss, based in Seattle, Washington, has more than 130 years’ experience operating vessels in
and outside of the US. The company currently operates a fleet of more than 200 tugs and
barges and has more than 1,400 employees in regional operations across the US. In addition to
providing domestic and international harbor and marine transportation services, the company
has extensive experience building Jones Act compliant vessels. For more information please

About Østensjø Rederi AS

Østensjø, based in Haugesund, Norway has more than 40 years’ experience operating tugs and
offshore vessels. The company currently operates a fleet of more than 30 vessels and has more
than 500 employees. The company has significant experience in offshore wind, having operated
up to five SOVs at a time in the market. This includes two tailor-made new builds, Edda Passat
and Edda Mistral, both of which are on long-term contracts to Ørsted in the UK. For more
information please visit