抄録
In this paper, motions of a semi-submerged platform for OTEC plant moored in regular waves are investigated experimentally and theoretically. Results of experiments and calculations show that the motions in regular waves are much smaller than those of ship-type platforms and the viscouse forces acting on the cold-water pipe have an great effect on the pitching motion at its resonant freqency. From a point of view on the design of the mooring system, a steady downward force due to a mooring line tensions should be noticed. Semi-submerged platforms have very small water plane area and steady drag forces acting on mooring lines are large because the lines are very long in the case of OTEC.
