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Service> Maintenance and overhaul Diesel engines	Diesel engines MAN high speed marine diesel engines Medium duty operation Heavy-duty operation Light duty operation MAN high speed marine diesel engines As powerful and reliable engines for both pilot and patrol boats, passenger and industrial ships and high-speed luxury yachts, the high-speed MAN diesel engines prove just how good they are. Medium duty operation Definition of medium-duty operation: Operating hours per year of up to 3,000 Time share at full load up to 50% Average load up 70% Special operating conditions that require no wide-open throttle Typical types of usage: Escort boats Pilot boats Fishing boats Passenger boats Ferries Cruise ships Sea-going patrol boats Heavy-duty operation Definition of heavy-duty operation: Operating hours per year of more than 3.000 Time share when under full weight of up to 100% Average use of up to 100% Typical types of usage: Fishing trawler Tug boats Pusher boats Barges Freighters Ferries Dredgers Light duty operation Definition of light-duty operation: Operating hours per year of up to 1,000 Time share at full load up to 20% Average load up to 50% Special operating conditions that require no wide-open throttle Typical types of usage: Yachts Light-duty fishing boats Patrol boats for customs, coastguard, police and navy Fire-fighting and rescue boats
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