The Effect of Current upon Hydrodynamic Forces Acting on Mooring Chain

Abstract

Conserning restoring force and dynamic reaction of slack chain mooring, a linear theory developed by Shimada et al. assuming infinitesimal displacement from catenary is well known to show good agreement with experimental results. In this paper this linear theory is extended to a case of slack chain mooring in current assuming that sectional added mass coefficient and drag coefficient are not changed in current. Experimental results of forced oscillation test in current show good agreement with theoretical evaluation.