Alternate Method For Determining Resistance Of Ship With Fouled Hull

. Recent research shows that planks of various roughness can be towed in water, and the frictional resistance obtained can be extended to hull forms. Thus, the resistance is determined experimentally with the help of towing tank setup. The estimation of resistance of planks of varied roughness by towing them in the towing tank will help determine frictional resistance of the ship. In the studies of Schultz (Schultz 2007), it is reported that higher drag values are reported for small coverage of barnacles, and smaller drag values are reported for large coverage. The skin friction coefficients for different plate lengths are extrapolated to ship size and speed. Usually, the variation in drag coefficients is minimal for planks of length above 50 feet.