Prediction of the rare events connected with ship's behaviour in rough seas

Abstract

In the paper results of the model tests are presented of shipping seas on the deck of S-175 containership in irregular waves, carried out by Ship Hydrodynamics Division (OHO) of Ship Design and Research Centre (CTO) as a part of the ITTC-initiated international research project. The project was aimed at elaborating the methodic recommendations for carrying out model tests of the rare events which shipping seas on the deck (deck wetness) is dependent on. The author came to the conclusions contradictory to those established within ITTC. Attention is paid to the experimentally stated, nonlinear phenomena which usually are neglected in the computerized calculation methods for ship's behaviour prediction in rough seas, based on the linear mathematical models. It is postulated to take into account the phenomena in the case of numerical simulations of the rare events in the domain of time.