Influence of sea heaving on forming the trajectory of level off when landing the hydroplane (longitudinal motion)

The problem of estimating a safe altitude of the hydroplane level off termination according to degree of sea heaving intensity have been considered. The results of statistic analysis of group properties of waves, based on the data of field investigations, are assumed as a basis for estimating. The approach used makes it possible to derive a simple dependence that sets the altitude to be determined equal to middle wave height.