Panzerkampfwagen VIII Maus (Mouse), the heaviest fully enclosed armoured vehicle ever built. The 33 ft 6 in (10.2 m) long and 12 ft 2 in (3.71 m) wide super-heavy
tank weighs 188 tonnes. (207 short tons) Only one prototype was complete. It could go 45 ft (13 m) under water with a large snorkel.
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