Phenomena resisting the motion of ships. Resistance due to
friction, wave making, form,appendage, wind and waves, squat, blockage and
shallow water effects. Estimation of powering using methodical series and statistical methods. Advantageous
effects of hull form
changes- bulbous bows. Asymmetric sterns and optimum trim for ships in
ballast.Screw propeller geometry. Momentum and blade element theories.
Propellers in open water, propeller coefficients and design charts. Hull propeller
interaction- wake, thrust deduction and relative rotative efficiency. Propeller
cavitations. Propeller blade strength. Screw design according to circulation theory for uniform and
non-uniform wake. Speed trials and service performance analysis.
