The Samsung Heavy Industries (SHI) yard in South Korea will be constructing four “next generation” shuttle tankers for marine energy transportation, storage and production company Teekay.
The dual-fuel engines of these shuttle tankers are not only able to operate on liquefied natural gas (LNG) as the primary fuel, but also consume a mixture of LNG and recovered volatile organic compounds (VOC) as an energy source.
VOC is the gas evaporating from the oil cargo tanks during loading; by utilising the recovered VOC as fuel rather than venting it to the atmosphere the harmful emissions will be eliminated and the ships’ bunker needs will be significantly reduced, says Wartsila.
The concept means nitrogen oxide (NOx) emissions from the engines’ exhaust will be reduced by more than 80%, sulphur oxide (SOx) emissions will be almost entirely eliminated, while particulate emissions will be reduced by more than 95%.
It is also expected to produce a significant reduction in fuel consumption compared to conventional solutions.
“Together with Teekay, we have developed a concept that takes the shuttle tanker sector into a new era, and which is further evidence of Wärtsilä’s ability to transform shipping by developing and utilising the very latest technologies,” says Roger Holm, President, Wärtsilä Marine Solutions.
“These ships will have tremendous operational flexibility with unmatched manoeuvring capability, and will achieve what all operators are striving for today, namely optimal economic and environmental performance.”
“This new shuttle tanker design will set new standards for both fuel consumption and CO2 emissions,” adds Terje Rusdal, Project Manager at Teekay.
Photo credit: Wartsila
Publication date: 10 January, 2018
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