Study finds hybrid tugboat delivers significant reduction in criteria pollutant emissions compared to conventional version
Green Car Congress
NOVEMBER 19, 2010
It also has 126 soft gel lead acid batteries for power storage that are separated into two arrays with 63 batteries each. All engines meet United Stated Environmental Protection Agency’s Tier 2 certification. Built by Seattle-based Foss Maritime, it began working the ports of Los Angeles and Long Beach in January 2009.
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