A possible example of a swamp wag, a DUKW.
Swap Wags were vehicles used in the swamps of Louisiana, they appeared to be boats on wheels.
Description[]
Each swamp wag had six wheels, which hold it eight feet above the swamp. Each wheel was nearly six feet in diameter. The only way to easily access the vehicle is from small metal ladders on either side of the vehicle. The vehicle and seat eight, and has a rudder kick bar for steering. The vehicle was open on the top.