DUKW
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The DUKW is a six-wheel-drive amphibious modification of the 2+1⁄2-ton CCKW trucks used by the U.S. military during World War II and the Korean War. Wikipedia
Crew: 1
Engine: GMC Model 270; 91 hp (68 kW)
Height: 8 ft 10 in (2.69 m) with top up; 7 ft 1 in (2.16 m) minimum
Length: 31 ft (9.45 m)
Main armament: Ring mount for.50in (12.7mm) M2 Browning machine gun fitted to one out of four DUKWs
Maximum speed: 50 mph (80 km/h) on road, 6.4 mph (6 kn; 10 km/h) in water