Frictional and pressure resistance of a Victory model 1

The paper describes the results of pressure measurements on the hull of a 1/50th scale Victory model carried out in the Research Laboratories of the Department of Naval Architecture and Shipbuilding at King’s College, Newcastle upon Tyne. The purpose of the measurements was to obtain the skin friction resistance by the deduction of the pressure resistance from the total resistance. Pressures at one hundred holes disposed over the hull were measured simultaneously with total resistance, wave profile, speed and trim. Records were taken at twenty-five speeds between the Froude numbers 0.21 and 0.28.

The results are in accord with previous work in demonstrating that the friction resistance is greatly in excess of flat plane formulations, but the present results give larger form factors which vary with speed. The results give an indication of separation at the higher speeds.