The aim of the experiment was time-domain monitoring and analysis of the pressure distribution on planing craft inwaves. A model was instrumented with pressure transducers and towed in calm water, head and oblique regular andirregular waves. The transducers were concentrated to a fore matrix to capture the impact loads and an aft matrix tofollow the pressure in the transom area. In waves, the propagation of the pressure enabled a reconstruction of the impactpressure distribution time history from the transducer signals. The impact loads determined as the integratedreconstructed pressure were compared with inertia forces determined from accelerometer signals. Correlation was clearand verified the reconstruction method and the instrumentation in terms of transducer matrix position, size and density.Besides pressure and accelerations, rigid body motions, speed, wave height and resistance were measured. The paper describes the set-up, discusses difficulties concerning model hull rigidity, sampling frequencies and signal analysis, and shows on characteristic results. The paper concludes that detailed time-domain studies of the impact pressure distribution are accessible from the set-up and the suggested analysis methods.
2004. Vol. 146