Foss Maritime and Aspin Kemp receive US patent for hybrid marine propulsion and energy management system used in harbor tugs
Green Car Congress
JANUARY 15, 2012
The hybrid propulsion and energy management system has been proven to significantly reduce emissions, fuel consumption and equipment maintenance for marine vessels. Foss built the first hybrid tugboat, Carolyn Dorothy , and has successfully converted a second vessel, Campbell Foss , to a hybrid at its shipyard in Rainier, Oregon.
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