Abstract

The paper presents case study of 23.9m catamaran motor yacht project developed for live on board and long-range ocean cruising. The yacht is designed on the limit of legal 'small craft' range though due to catamaran scheme providing accommodation spaces comparable with larger superyachts. Approaches to styling are presented, with connection to seagoing shape and other functional requirements. Layout planning and functional zones specific for catamaran yachts are discussed, with attractive features for long range cruising, weekend boating and parties on board. General dimensioning of catamarans at early design stages is based on parametric study. Recommendations on performance prediction and related hull shape design issues are given; application of CFD methods for hull refinement is presented. Approaches and problems with stability assessment of catamarans are touched upon. Comparison of catamaran yachts with monohulls is provided, with discussion of pros and cons of each platform.

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