Ford GPA

Car model

The Ford GPA "Seep" (Government 'P' Amphibious, where 'P' stood for its 80-inch wheelbase), with supply catalog number G504, was an amphibious version of the World War II Ford GPW jeep. Design features of the much larger and successful DUKW amphibious 21⁄2-ton truck were used on the GPA, but unlike these and the jeep, the 'seep' was not a successful design. It was considered too slow and heavy on land, and lacked sufficient seagoing abilities in open water, due mainly to its low freeboard. The Soviet Union received roughly half of the total GPA production under Lend Lease, and were sufficiently satisfied with its ability to cross calmer inland waters, that they produced a copy, the GAZ-46. From Wikipedia