Tupolev ANT-8
It was designated the "MDR-2" (MDR meaning Morskoi Dalnii Razvedchik, or Naval Long-Range Reconnaissance) by the military.The ANT-8 was chosen to be made entirely from metal, with a Duralumin hull and similar wings to the Tupolev R-6.The fuselage received much attention from the designers and it was decided to have the floats included in the load-bearing structure.[1] Although the aircraft demonstrated excellent seaworthiness, and Tupolev learned much about flying boat hulls from it, continuation of the ANT-8 project was deemed unnecessary by the Soviet Navy, as it was believed that it was obsolete and would soon be superseded by the Chetverikov MDR-3.Data from The Osprey Encyclopedia of Russian Aircraft 1875–1995 [2]General characteristics Performance Armament