A new, three-hulled, four-masted yacht, looking like helicopter, prepares for sail speed record. Cowes. GV Cowes, small yachts bobbing about. SV distinguished yachtsmen looking at Trion, pan along boat. SCU yachtsmen looking at booms. SV yacht with booms moving partly round. LV "Queen Elizabeth" steaming past in Solent. Small sailing craft in foreground. LV men carrying Trion to water's edge. SV & LV craft in water. SV man sitting in centre of Trion, messing about with one of the booms. Front view, yacht with man in position. SV & LV Trion on move, at same time sails are hauled up. SV traditional dinghy ploughing through rough water. GV Trion under way.