Prediction of the efficient speed of an LNGC with design condition from a direct cost evaluation considering the hydrodynamic characteristics and equipment operation

In this paper, we constructed a new approach to estimate the operating cost, by developing direct cost evaluation in consideration of the requested factors. As a result, the observed slow steaming was investigated on the basis of the hydrodynamic characteristics of the vessel and the effect of the activated GCU on the operating cost could be analyzed. Finally, a speed range within which slow steaming was effective was perceived, and the most efficient speed was observed at the lowest speed of that range.