GAZ-3937 "Vodnik" (and its modified version GAZ-39371) is a Russian high-mobility multipurpose amphibious vehicle manufactured by GAZ. It is a modification of civil GAZ-2330 "Tigr" and has a water-displacing hermetic hull which provides improved fording performance. It has a 4x4-type chassis with independent suspension and a centralized system of tire-pressure control. The ground clearance is 475 mm. The standard undercarriage with a cab can be fitted with a number of different modules with various number of passenger seats and cargo compartments, seating up to 10 people. It is powered by a 175 hp (130 kW) diesel engine giving a top speed of 112 km/h (4 to 5 km/h when swimming).