The computer programs described in this report estimate the effects of hull roughness and heavy weather on a particular hull/engine/propeller combination operating along a specified trade route. The roughness history of the hull can be varied to simulate different fouling rates and maintenance procedures, and used to calculate its added resistance history. Added power requirements due to heavy weather, and limits of prudent operations, will be accounted for in head, beam and fouling seas. Any propeller and engine (steam or diesel) may be specified, along with whatever limits of operation (HP, torque, RPM, etc.) apply to that engine. The program then uses wave data for a particular trade route and the roughness, delta C sub f history of the vessel to predict the probability distributions of V (through water), SHP, RPM, Q, and SFR over the specified time period, and in the diesel case, % of time operating in a specified region of high maintenance costs.
Merchant Vessel Hull and Propulsion Service Margins. Volume 2. Computer Program Documentation
1982
83 pages
Report
No indication
English
Marine Engineering , Merchant ships , Ship hulls , Marine surface propulsion , Design criteria , Computer programs , Structural design , Diesel engines , Ship turbines , Economic analysis , Performance standards , Marine power margins , NOLIM1 computer program , LIMIT computer program , SERVIC computer program
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