The Standard Ship Motion Computer Program, SMP, was developed at the David Taylor Naval Ship Research and Development Center in 1981 as a prediction tool for use in the Navy's ship design process. SMP provides predictions of the six degrees of freedom responses of a ship (surge, sway, heave, roll, pitch and yaw) advancing at constant forward speed with arbitrary heading in both regular waves and irregular seas. Corrections were made in the bilge keel viscous damping calculations for ships that have both a bilge keel and a skeg described to the same station. An improvement in yaw-roll coupling was made by using a different theory to compute hull lift damping. New predictions were incorporated into SMP to compute stabilized ship responses for active antiroll fins using fixed gains. Predictions of vertical wave induced loads were also incorporated into SMP. In addition, a new set of tables of severe ship responses is provided as part of the output. (Author).
SMP84: Improvements to Capability and Prediction Accuracy of the Standard Ship Motion Program SMP81
1985
98 pages
Report
No indication
English
Marine Engineering , Dynamic Oceanography , Ship motion , Accuracy , Computer files , Computer program documentation , Corrections , Coupling(Interaction) , Mathematical models , Computer programs , Degrees of freedom , Loads(Forces) , Ocean waves , Response , Computerized simulation , Mathematical prediction , Roll , Ships , Stabilization , Vertical orientation , Yaw , Smp81 computer program