Abstract No.F181005-055

Author name(s): Jóannes Gullaksen

Company: JG Maritime Engineering Ltd., UK

The cost of energy, economic climate, social responsibility and emerging international regulatory requirements to reduce emissions are all drivers in modern ship design. International regulatory requirements on environmental performance and cost effectiveness as main drivers in modern ship design became a matter of increasing awareness after IMO adopted mandatory energy-efficiency design index (EEDI) under Annex VI of IMO’s pollution prevention treaty (MARPOL), resolution MEPC.203(62), to address the emission of air pollutants from ships. Following these emerging international regulatory requirements to environmental performance, the shipping industry is facing challenges and must come to terms with the regulatory system and the environment. This paper is intended for discussion of parameters and assumptions included in the objectives, constraints and design variables used in hull form optimization. With the sum of wave resistance and viscous resistance as objective function and the parameters of B-spline and NURBS functions as design variables, a description is provided describing the optimization problem considered from a trade-off constraint between deadweight (cargo capacity) against ship speed (fuel economy) and environmental performance.

KEY WORDS: ship hull geometry; spline mathematics; EEDI; environmental performance, conventions and regulations

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