Experimental Studies on the Forward Speed Effect of Longitudinal Restoring Forces and Moments Acting on High Speed Coastal Fishing Vessels

Abstract

Experimental results on the forward speed effect to the longitudinal restoring forces and moments acting on high speed coastal fishing vessels are reported. The restoring forces and moments with and without forward speed were measured with a scaled model of the coastal fishing vessel in head waves. The results show that remarkable forward speed effect exists at the Froude number of 0.5 or over. These measured forces and moments do not improve the ship motion prediction so that it is suggested that added mass and inertia moment could depend on forward speed as well.