World’s First LNG Tugs, Now Cleaner Than Ever
When Borgøy and Bokn entered service in 2013–2014, they were the world’s first escort tugs designed for 100% LNG propulsion. More than a decade later, they are once again at the forefront, now operating on bio- LNG as part of a continued decarbonisation strategy.
In 2025, Gasum began bunkering both vessels with bio-LNG under an agreement with Equinor. The first successful bunkering was carried out at Kårstø in February 2025, marking the next phase in a long-term collaboration focused on reducing lifecycle emissions in terminal operations.
Key Facts
Renewable Fuel. Immediate Impact.
Liquefied biogas (bio-LNG) is fully renewable and produced from waste-based feedstocks such as biowaste, sewage sludge and agricultural side streams. Compared with conventional fossil fuels, bio-LNG delivers up to 90% lower lifecycle greenhouse gas emissions, significant reductions in NOx and particulate matter, and full drop-in compatibility with existing LNG systems.
Because LNG and bio-LNG are fully interchangeable, Borgøy and Bokn required no technical modification to transition. The propulsion systems, fuel handling design and safety plans were already future-ready.
Continuous Service
Chartered by Equinor at the Kårstø processing plant, one of the world’s largest LPG terminals, Borgøy and Bokn perform high-frequency escort and tanker assistance assignments under demanding North Sea conditions.
They are not demonstration vessels. They are daily operational assets executing terminal service work with uncompromising safety standards. The integration of bio-LNG represents something more powerful than a pilot project: it is renewable fuel applied at full operational scale.
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