The British Hovercraft Corporation 's SR.N4, one of the largest air-cushion vehicles (about 200 tons), carries about 10 percent of the English Channel passen-ger traffic. Some of its parts are-. Iift-fan air intakes (1),- main bevel drive gearbox (2); 12-blade lift-fan (3); skirt fingers (4); skirt (5); main passenger cabin (6),- entrance to passenger cabins(7); extensible stairs (8); engine air intakes (9); gas {10),- pylon (11); fin (12); 13); car deck
(14); propeller for drive and dynamics(lb); propeller gearbox(16); radio antenna (17); radar scanner (18); 9); and forward car ramp (20).
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