ABSTRACT
The SWATH concept has been explored in some depth over the past 20 years with significant body of research in the United Kingdom [1-14]. A number of vessels have been built, particularly in the USA and Japan but to date the U.K. research effort has not been backed by practical field implementations at a significant scale. A 4 tonne SWATH vessel, named SAMHUCH and built by Yarrows shipbuilders Ltd. as a tenth scale model of a 2400 tonne naval design, now gives the opportunity to obtain data to correlate with theoretical models of ship motions, and also to gain experience of the practical as well as the theoretical requirements of a total SWATH system.
