Gaz-3937 vodnik, a Russian amphibious vehicle for transportation of people and cargo in difficult areas. Protects the crew from firearms. Built on the chassis of the vehicle GAZ-2330 "Tigr". Developed by the design bureau OAO "Gaz" is produced at the Arzamas machine-building plant. The car is built on a modular scheme. The welded chassis includes two removable modules. A module consists of the power pack compartment and offices separated by an airtight bulkhead.