How many men does it take to drive a tank?
Tank
Most modern tanks most often have four crew members, or three if an auto-loader is installed. These are the:
Amphibious Combat Vehicle
The ACV 1.1 is to carry 10–13 Marines, have a swim capability similar to the AAV, and have equal or greater mobility to the M1 Abrams tank. Although tracks are traditionally considered better for all-terrain mobility, the Marines believe wheeled vehicle technology has advanced enough to enhance survivability and mobility in a 35-ton-class platform; the Marine Personnel Carrier technology demonstrator used "in-line" drive technology that enabled all four wheels on each side to pull together much like the way a track does which, combined with a higher ground clearance and central tire inflation system, substantially closes the maneuverability gap and results in equal or better maneuverability than the M1A1 and better performance over the AAV. Improved technology used to inform requirements to build ACV 1.2 vehicles will later be applied to delivered 1.1 versions to upgrade them to 1.2 standard. Each ACV 1.1 vehicle will have a 3-man crew, and two vehicles will carry a reinforced rifle squad. Armament will consist of an M2 .50-caliber machine gun in a remote weapons station, with the potential to install a stabilized dual-mount M2/Mark 19 grenade launcher turret. Potential water speeds are for a ship-to-shore capability at 8 knots.