AAV7

   The Amphibious Assault Vehicle, usually known as the AAV7 was once called LVTP7 by the US Marine Corps and other users. It is a bulky amphibious tracked vehicle intended to land troops on open beaches so it has to be seaworthy and is thus scaled accordingly.

   Intended as a replacement for the LVTP5 series the AAV7 (then the LVTP7) prototype appeared in 1967 with production commencing during 1970-1971. By the time production has ceased over 1 500 had been produced not only for the US Marines but also for seven export customers.

   The late production model was the AAV7A1 and most earlier models were later brought up to this standard. AAV7A1 improvements included an new Cummins diesel engine pack, night vision devices, a new weapon station control system, improved ventilation and many other detail changes. Further improvements included universal weapon mounting capable of accommodating a 40-mm grenade launcher as well as 12.7-mm machine gun.

   The capacious troop compartment can hold up to 25 marines or 4.5 tonnes of supplies, with entry and exit being via a large rear-mounted ramp.

   In the water propulsion is provided by two waterjet units at the rear. A kit was devised to permit extra add-on armor to be installed on most US Marine Corps vehicles.

   AAV7A1 variants include a command vehicle (AAVC7A1), a recovery vehicle fitted with a recovery jib, and various mine-clearing vehicles, including one with a mine plough.

   Various automotive and suspension test beads have appeared, including a project, involving an electric drive system. In time it is expected that the AAV7A1 will be replaced by a programme known as the Expeditionary Fighting Vehicle.