Wartsila engines to power three new LNG tugs

Wartsila engines to power three new LNG tugs

Three large new escort tugs contracted by Norwegian operator Østensjø Rederi, will feature Wärtsilä dual-fuel engines integrated with a customized gas storage and supply system also supplied by Wärtsilä.

The tugs will operate primarily on LNG but the Wärtsilä DF engines provide the flexibility to select the most suitable fuel according to availability, price and local environmental restrictions. The contract for the Wärtsilä solution was signed in December 2014. The design of the tugs has been carried out by the designer Robert Allan in Canada, in close cooperation with Østensjø Rederi.

The overall LNG system, which incorporates Wärtsilä’s unique LNGPac fuel system, a fully integrated gas handling system, and the Wärtsilä Gas Valve Unit (GVU), has been specially designed by Wärtsilä to accommodate the need for a compact solution. The tugs will be powered by 6-cylinder Wärtsilä 34DF dual-fuel engines. The Wärtsilä equipment will be delivered during the first half of 2016.

The vessels are designed to have a bollard pull of 100 tons, and will operate at Statoil’s Melkøya terminal near Hammerfest, Norway. Wärtsilä and Østensjø have cooperated closely to develop the chosen LNG solution for these new vessels.

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