Zhang L.,Dalian Maritime University |
Zhang J.N.,Dalian Maritime University |
Zou Y.,Guangzhou Salvage Bureau of the Ministry Transport
Proceedings of the International Offshore and Polar Engineering Conference | Year: 2016
Current regulations on the Energy Efficiency Design Index (EEDI) have no clear description of the computation method for the index associated with high performance ships. As a supplement, this paper aims to bridge the gap by developing the calculation formula for calculating the EEDI for these ships. Load capacity, ship speed and EEDI in the proposed EEDI formula are significantly affected by the ship's main dimensions. This leads to the need of multi-objective optimizations. To meet the need, the genetic algorithm was used to obtain the pareto frontier. Fifteen groups of optimized results were determined for further decision-making. The final optimal model that determines the weight of different indicators was established by using the rigid least square method. The optimum scheme showed an increase in the load capacity and speed by 16.41% and 0.36%, respectively. In addition, the EEDI was reduced by 14.42% compared to the target ship. © Copyright 2016 by the International Society of Offshore and Polar Engineers (ISOPE).