Description
Multi-hull ships (vessels, craft, boats) comprise a great variety of types, sizes and applications. At the present time, the main interests in shipbuilding and shipping industries of multi-hull vessels are focused on engine-powered ships. Their specifics in all aspects of naval architecture are described in detail in a monographCite error: A set of tags are missing the closing ; see the help page. ,a twin-hull version if this subgroup is commonly known as SWATH=Small Waterplane Area Twin Hull.
Their joint classification, though incomplete, is shown in Fig.1 and Fig.2 showing some arrangements of hulls for conventional and SWA multihulls, both reproduced from.
Numbers in Fig.1 stand for: 1 – catamaran, engine-powered, with its conventional hulls being of the same size and symmetric relative to their central plane (CP), 2 – the same with non-symmetric hulls, 3 – trimaran, engine-powered with identical symmetric hulls, 4 – the same with flat outer boards of side hulls, 5 – catamaran with shifted hulls, 6 – proa or a vessel with an outrigger, engine-powered, 7 – ship with outriggers which is actually a trimaran with its side hulls being significantly smaller than the central hull. Fig.2 shows a waterplane sections of SWA vessels, here the numbers stand for: 1 – single-strut SWATH, 2 – twin-strut SWATH, 3 – SWA trimaran with the identical symmetric hulls, 4 – SWA trimaran with outriggers, 5 – a vessel with a conventional central hull and SWA outriggers, 6 - a monohull SWA vessel with foils.
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