The Landing Vehicle, Tracked (LVT) is an amphibious warfare vehicle and amphibious landing craft, introduced by the US Navy. LVTs were used by the US Marine Corps, US Army, Canadian, Australian and British armies during WW2.
Originally intended solely as cargo carriers for ship to shore operations, they evolved into assault troop and fire support vehicles. The types were known as Amphtrack, “Amtrak”, “Amtrac”, etc. (portmanteaus of “amphibious tractor”), and “alligator” or “gator”.
The LVT has its origins in a civilian rescue vehicle called the Alligator. Developed by Donald Roebling in 1935, the Alligator was intended to operate in swampy areas, inaccessible to both traditional cars and boats. Two years later, Roebling built a redesigned vehicle with improved water speed. The US Marine Corps, which had been developing amphibious warfare doctrine based on the ideas of Lt. Col Earl Hancock “Pete” Ellis and others, became interested in the machine after learning about it through an article in Life magazine and convinced Roebling to design a more seaworthy model for military use.
Roebling completed a militarized prototype by May 1940 and later replaced it with a more powerful engine; the USMC tested the design in November 1940. Impressed by the prototype, 100 units were built using all-steel construction, for a more rugged and easily produced design, and the first LVT-1 was delivered in July 1941. Another 200 units were ordered even before the first production units were delivered. After more improvements to meet requirements of the Navy, the vehicle was adopted as “Landing Vehicle Tracked” or LVT.
The LVT-1 could carry 18 fully equipped men or 4,500 pounds (2,041 kg) of cargo. Originally intended to carry replenishment from ships to shore, they lacked armor protection and their tracks and suspension were unreliable when used on hard terrain. However, the Marines soon recognized the potential of the LVT as an assault vehicle. A battalion of LVTs was ready for the 1st Marine Division by 16 February 1942. LVTs saw their first operational use in Guadalcanal, where they were used exclusively for landing supplies. About 128 LVTs were available for the landings.
As early as January 1940, Roebling had prepared preliminary sketches of an LVT with a gun turret to provide fire support to the landing waves. In June 1941, USMC recommended development of an LVT armed with a 37mm gun and three 0.50 cal machine guns. Development was slow and ultimately involved a complete redesign of the LVT, the LVT-2 Buffalo. Armored versions were introduced as well as fire support versions, dubbed AmTanks, which were fitted with turrets from Stuart series light tanks (LVT(A)-1) and Howitzer Motor Carriage M8s (LVT(A)-4). A total of 509 LVT(A)-1 and 1,890 LVT(A)-4 were produced.
Production and development work continued throughout the war, resulting in 18,616 LVTs delivered. Twenty-three US Army and eleven USMC battalions were equipped by 1945 with LVTs. British, Canadian and Australian armies also used LVTs in combat during WW2.