Among the best tanks in terms of both reliability and sheer production capability, M4 Sherman series of tanks became the staple fighting-vehicles of the WWII Allies. The 1st version to be produced, was succeeded by the welded-hull M4, the diesel engine M4A2, and finally the representative tank of the series, the M4A3.
The nuclear-powered Enterprise is the first aircraft carrier of its kind and it's the largest vessels ever made. The gigantic aircraft was put into service in 1961. Eight watercooled reactors generate a total power output of 300,000 HP with which the vessels achieves an average speed of 35 knots.