OPTIMIZATION FOR SHIP HULLS-DESIGN, REFIT AND OPERATION

This paper gives an overview of the application of formal optimization in ship design, refit of ships and operational procedures. The application cases are taken from industrial practice and recent research projects, reflecting the state of the art and near-future trends. In design, the focus is on hull optimization, based on full-scale free-surface RANSE simulations with working propeller in calm water ("numerical sea trials"). In refits, formal optimization for bulbous bows for different operational profile (in slow-steaming and partially loaded conditions) is shown to give unexpectedly large saving potential. In operation, trim optimization and weather routing are widely used applications. Recent progress in prediction of added resistance in waves benefits both weather routing and future hull optimization under consideration of added resistance in waves.