|Date of first acceptance||July 1941||Total acceptances||1225|
+ 24 passengers
|Ground pressure, zero penetration||139psi
|Two .30cal M1919 MGs||Skate mounts around cargo area||6000 rounds|
|Engine||Hercules WXLC-3; 6 cylinder, 4 cycle, inline gasoline|
|Transmission||Spicer, 3 speeds forward, 1 reverse|
|Steering||Clutch-brake, steering levers|
|Type||Road wheels||Track return rollers|
|Drive sprockets||Idlers||Shock absorbers||Rear drive||Adjustable blocks at front of track||None|
|Shoes/track||79||Ground contact length||140"
|Max level road speed||12mph
|Max water speed||6.1mph
|Max vertical obstacle||18"
|Max grade||38%||Angle of approach||46°|
|Angle of departure||58°||Max fording depth||Floats|
|Cruising range||~150mi, roads
Developed from a swamp rescue vehicle in use in Florida's Everglades, the main identification point for the LVT1 is that its cab is placed right at the bow of the vehicle. Early versions of the LVT1 had the 3 driver's cab windows spaced farther apart than later versions. The tracks of the LVTs had large grousers attached that propelled the vehicles through the water. The LVT1's tracks incorporated sealed roller bearings which ran in welded molybdenum suspension rails in the bottom of sponsons, and these bearings supported the weight of the vehicle. Adjustable idler blocks mounted on spring-loaded jacks were positioned at the front of the sponsons to take up slack in the track. Each track possessed 316 roller bearings and seventy-nine 3"- (7.6cm-) high, 10.25"- (26.04cm-) wide, curved grouser cleats; when sunk to 4" (10cm) of ground penetration these tracks yielded a ground pressure of 7.8psi (.55kg/cm²). The top run of the tracks was cushioned by rubber mats made from conveyor belt. Since the LVT1 was unarmored, it was most useful as a ship-to-shore cargo ferry, and it could haul 4500lbs (2000kg) at a time. LVT1 was unofficially known as Alligator.