Abstract: A Wing In Ground Effect Vehicle has a pair of supercavitating endplates (17) which extend below the fuselage (2) such that they can be immersed in water during flight thereover. The endplates have a nose (28) defining a leading edge (20) and adapted to generate a supercavity. The endplates (17) typically pivot about a pivot axis P to provide a stabilising weathercock-type effect.