Scotland’s Maritime Craft Services (Clyde) Ltd has ordered three new crew transfer vessels (CTVs) at the Työvene shipyard in Finland. Built to new design by Sandown, U.K., based Ad Hoc Marine Design (AHMD) they feature an advanced SWATH (small waterplane area, twin hull) design that concentrates a large proportion of the vessel’s floatation volume into bulb-like hull sections deep beneath the waterline. These support the weight of the vessel through narrow, hydrodynamically efficient hull...