Yawing of turret-moored monohull vessels in response to regular waves

This paper considers the yawing behavior of a turret-moored floating produc tion and storage vessel in regular waves. Experimental results are presente d from regular wave tests performed on a model in a square wave basin indic ating the vessel taking up yaw offsets of large amplitude in waves of speci fic frequency. The measured data are compared with results from second-orde r diffraction analysis and indicate that it is likely that the yawing behav ior is caused by nonlinear potential loading.