Spectral Response Computation of P23 boat in Bonny offshore

A detailed approach to ascertaining the behavior of a P23-boat based on waves measurements carried out in Bonny Offshore Nigeria is presented. The P23-boat is a personnel transport boat commonly used in Bonny Location. As a continuing research, wave spectra results of the Bonny Offshore location were extracted from previous studies and used as input parameters in this work. Using Newton’s second law of motion, the response equation involving complex wave amplitude was developed. The computations showed that the translations and moments (Surge, sway, heave, roll, pitch and yaw) motions peak for P23 boat happens at a frequency of 1.0rad/s. The zeroth moment of all the response spectra is noted to be less than 50% of the Bonny offshore wave spectra. However, it is found that the energy content in roll is somewhat large. This is attributed to the nature of the P23 bull. This approach can be useful in determining the response of other floating structures with much ease.