The WW2 Jeep became amphibious with a skirt and floatation cells fitted and a propeller at the rear.
They were not widely used in NWE or Italy due to the speed of most of the rivers making them dangerous but the Russians used them extensively as most of their rivers were wide slow & slow moving, they were often used to do river assaults with SMG armed troops.

Includes 2 crew, American or Russian, please specify which you would prefere.