The Crusader was a jet-powered speed boat piloted by John Cobb. It was built by Vospers of Portsmouth and designed by Reid Railton, costing £15,000 in 1949. It was silver and scarlet in colour and 10m long. The engine was a De HavillandGhost. The boat was destroyed and Cobb killed on 29 September 1952 when on a world record attempt at Loch Ness, Scotland.
The hull was of trimaran form, a main hull with a planing step, and two smaller rear-mounted outriggers. Construction was of birch plywood, with aircraft-style riveted aluminium for the cantilevers to the outriggers.