High speed boats

A rigid-inflatable or fully-inflatable boat 1 is equipped with a permanent, or removable, ram wing structure 5, typically covering substantially the whole outline of the boat 1 from above. The boat when used at high speed lifts from all but minimal contact with the water 4 in stable "ram wing", or ground-effect, flight. The covering wing 5 also protects against weather, visual reconnaissance, infra-red sensor equipment, etc. when the boats are used as assault craft.