WAVE-DRIFT DAMPING OF A 200-KDWT TANKER

Drift forces and wave-drift damping are calculated for a 200 kdwt comm ercial supertanker. The time-dependent equations are solved by a numer ical algorithm developed by Prins & Hermans (1994a). Agreement of the drift forces with towing-test measurements is reasonably good; agreeme nt of the wave-drift damping with extinction tests is very good. The a greement with the wave-drift damping resulting from towing-test measur ements is less convincing. This is due to errors in the measurements c aused by the fact that towing tests involve small differences between large quantities.