For several ship types the introduction of the EEDI will lead to a lower installed power. The related speed reduction will allow building shorter hulls with a higher block coefficient. Because these hull forms have a higher added resistance in waves they will show a higher speed loss in service. Apart from an obvious safety issue in adverse weather, this will lead to an increase in trip duration and reduced reliability. The present work investigates the operational consequences of a reduction in power for a 6400tDWT tanker. Based on an estimate of the evolution in hull form, the resistance and propulsion characteristic, the related increase in the added resistance and the related increased speed loss on the trip duration and reliability are quantified on a typical European coastal route.
展开▼
