March 22, 2007 Seattle-based Foss Maritime has announced that it plans to build the world’s first true hybrid tug boat, a “green” vessel that will significantly reduce harmful nitrogen oxide, particulate matter, sulphur dioxide and carbon emissions. It will also consume less fuel and be quieter than its conventional predecessors. The hybrid tug will look almost identical to the Dolphin-class tug boats pictured, and will match their 5000 horsepower. The hybrid tug’s drive units will be powered by batteries coupled with diesel generators and feature a modified engine room accommodating two 670 horsepower battery packs and two 335 horsepower generators.
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