The assumptions inherent in this theory are that ship length is large compared to beam and draft, and that hull section and waterplane properties are represented by the calm water values.

Currently, the Navy has 19 SURTASS ships —18 monohull and onetwinhull Small Waterplane Area Twin Hull (SWATH). The Navy expects to replace its 18 monohull SURTASS ships with nine twin hull SWATH ...

a global leader in small waterplane area twin hull (SWATH) vessel design. The launch is a major milestone for the Pioneer class since completing its design phase in February 2024 before commencing ...