An amphibious vehicle (or simply amphibian), is a vehicle or craft, that is a means of transport, viable on land as well as on water.
This definition applies to ATVs, cars, buses, trucks, RVs, and military vehicles, all the way to the very largest hovercraft. Ground effect vehicles, such as Ekranoplans are generally not considered amphibious vehicles.
ImageDescription - US Marine Corps (USMC) Light Armored Vehicles (LAV-25) and High-Mobility Multipur...
photo of PTS-M
Soviet-made tracked amphibious transport PTS-M of Serbian River Flotilla 1st Pontoon Battalion.