A dynamic stability event— not to be confused with ordinary or damaged transverse stability—is a sudden and seldom occurring event that can result from an unusual dynamic response in some combinations of speed, heading, ship motions phase and wave field. This paper defines several dynamic stability events and describes a process developed to investigate them. The process involves model tests, numerical analyses, and a high speed catamaran test vessel. The strengths and weaknesses of model testing are compared to numerical analyses, and the overall validity of the results are discussed.

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