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Coralius Carries Out First Fuel Change To LNG At Sea
Oct 23, 2017

The Skangas bunker vessel Coralius continues it adventurous journey into Liquefied Natural Gas (LNG) refueling at sea by cooling down the recipient vessel’s tanks and delivering LNG in one operation, another first. The receiving vessel LEG/C Navigator Aurora was supplied with just under 500 mt LNG in the middle of a voyage between Sweden and South Europe.

The successful operation was carried out at Danafjord outside Gothenburg over the weekend.

Combined cooldown and fuel operation

Going from using diesel oil to LNG requires a cooling down operation of the receiving ship’s fuel gas tanks from ambient conditions to minus 160 degrees. This operation is time consuming but necessary. The Navigator Aurora’s design allows her to pre-cool her fuel gas tanks before LNG spray is introduced, reducing the cooling down period considerably. All in all, this first bunker operation took less than 24 hours with the transfer of the main parcel taking 6 hours.

Larger vessels, larger fuel volumes and increased experience

Bunkering of Navigator Aurora was different from previous bunkering operations since it included the cool down operation. The operation that took place over the weekend is a milestone for the industry and proves that with careful planning and teamwork, this type of operation where LNG bunkers is supplied to vessels whilst transiting between ports, is not only efficient but also very safe. In addition, this was Coralius’ largest bunkering done so far.

“The Navigator Aurora is the world’s largest type-c ethane/ethylene carrier and we just proved our ability to serve yet another shipping segment. We experience an increased interest from diversified ship owners to take LNG bunker directly from a bunker vessel”, says Gunnar Helmen, Sales Manager Marine in Skangas. “Due to this operation together with the team on Navigator Aurora we also gained a lot of valuable experience.”