The Boeing Model 320 was a late 1930s project by Boeing for a giant maritime patrol flying boat.
Design The design of the Boeing Model 320 featured a giant flying boat with twin hulls. The crew of eight was seated in a nacelle in the wing center section. E. R. Johnson. American Flying Boats and Amphibious Aircraft: An Illustrated History. Bowers, Peter M. (1989). Boeing Aircraft since 1916. London: Putnam Aeronautical Books, 1989.
Specifications Crew: 8 Wingspan: 200 feet Powerplant: Six 1,200 hp Wright R-2600 Twin Cyclone engines. Length: 116 ft Gross weight: 134,000 lb
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