HYBRID HARBOR PATROL BOAT

摘要

Although the city of Annapolis, Md., originally wanted only to convert its 23'×8'6"×3'6" patrol boat from diesel outdrives to waterjets, it ended up with both waterjets and a hybrid diesel-electric propulsion system. MetalCraft Marine, Kingston, Ontario, designed and built the original boat in 2001 and then converted it in 2011. The original six-cylinder Mercruiser 220 diesel outdrive was replaced with a Steyr HDS (Hybrid Drive System), a compact marine hybrid system that combines an electric motor and a small diesel engine.