Design of mooring facilities for Mega-float demonstration experiments

Abstract

The demonstration experiments on Mega-float off Oppama at Yokosuka has been completed in winter of 1998.There two kinds of mooring devices on mooring dolphins were adopted .Basically a rigid type mooring device is considered so that the Megafloat responds small against the wave and wind. However the sufficient breakwaters were not provided for creating a calm sea, the slack mooring system combined with a rubber damper and two lines of rubber mold chains was mainly used., while the rigid type device was used during two weeks in calm season.The paper describes the design for these mooring facilities ,such as design loads, motion response along with results measured and the enhacements carried out.