... properties of the sea surface rather than the whole wave trace. In order to simplify the analysis of the slow-drift oscillations the surge motion of the structure has been considered only. Theory and results from laboratory tests will be explained, applying regular waves, regular wave groups and irregular...

... of an earlier executed program[1]. It will be shown that, using the results of measured or calculated drifting forces on an object moored in regular waves, a prediction can be made of the drifting forces induced by wave trains consisting of regular wave groups. Also for an irregular wave train the drifting...