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SEAKEEPING PERFORMANCE ASSESSMENT OF SHIPS

Tuomo Karppinen, Timo Aitta

Abstract

Evaluation of seakeeping performance of ships is reviewed. Attention is given both to the general assessment of seakeeping performance and to ship motion parameters in reducing speed or changing course. A method for overall evaluation of seakeeping performance, based on the percentage of time of operation, is presented. On the basis of data in the literature, numerical values for operability-limiting criteria are suggested. Results of theoretical seakeeping performance predictions for Series 60 vessels are also given.

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Key concepts: Seakeeping, Operability, Limiting, Marine engineering, Ship motions, Engineering, Aeronautics, Reliability engineering