DIFFRACTION POTENTIAL FOR A SLENDER SHIP MOVING THROUGH OBLIQUE WAVES.

The diffraction problem of a fixed slender ship in incident waves is formulated. Both the conditions of zero and constant forward velocity are considered. The waves are assumed to be of the same order as the beam of the ship and are from an oblique heading. The boundary value problem is linearized with respect to wave amplitude and solved by the method of matched asymptotic expansions. The pressure distribution on an ore carrier for both zero forward speed and an abbreviated form of the forward speed case are given and compared with experiments. The theory compares well with the measured pressures on the mid-ship section, and on a forward section with stern seas. However, the theory does not compare well for the case of a forward section and bow seas.