United States' LVT Number Designations

• LVT(A)1, LVT(A)2: Had M3 Light Tank turret.
• LVT(A)4, LVT(A)2: Had M8 Howitzer Motor Carriage turret.
• LVT(A)5: Had M8 Howitzer Motor Carriage turret. Stabilizer added.
• LVT 76 mm Amphibious Gun Carrier: Altered M18. Not finished.

Sources:

1. Profile: AFV Weapons 26: Hellcat, Long Tom and Priest and Complete Check List of all U.S. World War II Self-Propelled Weapons, Colonel Robert J. Icks, 1971