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Norwegians Take World's First Bi-fuel Tanker
01 Nov 2003
What is billed as the world's first bi-fuel LNG tanker was scheduled for delivery in October by Dutch shipyard Bijlsma to Norwegian shuttle tanker company Knutsen OAS Shipping in Norway for charter by Naturgass Vest .
The 1,100-cbm vessel, which is 68.9m long, 11.8m wide and draws 3.3m is of 1,500gt and will run LNG as main fuel with two diesel engines installed as back-ups.
The LNG fuel will be the boil-off gas from the cargo in two stainless steel tanks of 550m capacity each. Boil-off is needed to maintain a LNG carrier's cargo temperature at a required minus 165infinityC. The insulation of each tank is calculated to get boil-off suitable for running the main engine without spilling gas.
The 14 knot newbuilding is reportedly costing NOK 100 million ($11m). She is being classified by DNV, has a double hull and is designed as a 2 G type gas tanker. Her equipment includes two Azimuth thrusters, each frequency controlled by an electric motor of 900kW, and one bow thruster. She is being chartered out to Naturgass Vest, which signed a 15-year NOK 300 million LNG transport contract with Knutsen late last year. Knutsen operates a fleet of 25 tankers.
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