Patent ID: 6487982
Filing Date: 2002-12-03
Classification: B63B

Abstract:
An anti-rolling structure for a box-type floating body comprising said floating body which is substantially rectangular when seen from above and at least a protrusion on at least either of transverse sides of the floating body, said protrusion extending longitudinally of the floating body at a level lower than a waterline so as to adjust a moment lever l(K) to a value at least close to that of distance OG from an origin O lying at the waterline to center G of gravity,the moment lever l(K) being given by an equation l(K)=k2l20âˆ’(1+k2)lwo where k2 define an added mass coefficient of sway motion, l20 defines a hydrodynamic force moment lever, and lwo defines a wave exciting moment lever about the origin O.