The two new shuttle tankers for the KNOT Group will feature Wartsila’s unique technology, combining VOC recovery with an LNG fuel gas supply system. Credit: Wartsila.

Marine technology company Wartsila has received an order to supply its Volatile Organic Compounds (VOC) Recovery System and a liquefied natural gas (LNG) Fuel Gas Supply System.

The equipment will be provided for two new 124,000dwt shuttle tankers.

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Shuttle tankers operator Knutsen NYK Offshore Tankers (KNOT) ordered the tankers that were built by South Korea’s Daewoo Shipbuilding & Marine yard.

Liquefied VOC is mixed with LNG, which is then used as main and auxiliary engine fuel.

The vessels are expected to emit 30% to 35% less CO₂, which is approximately 30,000t each year compared to traditional oil-fuelled shuttle tankers.

Wartsila Marine Sales general manager Hans Jakob Buvarp said: “Wartsila has developed its VOC abatement technology over the past 20 years, and our competence in this field is unmatched in the marine sector.

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“It means that for these vessels with the combination of Wartsila’s VOC Recovery and LNG fuel systems, they will not only be extremely sustainable environmentally but will also be commercially attractive. The VOCs that would otherwise be emitted to the atmosphere can instead be burned as fuel.”

Knutsen OAS New Building Director Jarle Østenstad said: “Our industry is rapidly changing towards greater environmental awareness and improved operational efficiency. These two new ships will reflect this change, thanks largely to Wartsila’s advanced technology.

“They will truly represent the new generation of shuttle tankers, with vastly reduced emissions and lower fuel costs.”

The solutions will be delivered in November. The tankers will be operated in the North Sea oil fields.