Beriev MDR-5

The Beriev MDR-5, sometimes called the Beriev MS-5, was a Soviet long-range naval reconnaissance and bomber flying boat prototype developed by the Beriev design bureau at Taganrog; its designation abbreviates the Russian for naval long-range reconnaissance aircraft. It was an all-metal, twin-engined, high-wing cantilever monoplane flying boat designed for a crew of five and powered by two Tumansky M-87A radial engines. Two prototypes were built, the first a pure flying boat built in 1938 and the second an amphibian. Although the MDR-5 was adequate, the rival Chyetverikov MDR-6 had already been ordered into production, so the MDR-5 was not developed further and stayed a prototype. Defensive armament was a 7.62 mm ShKAS machine gun in each of the bow and midships turrets and another firing down through a ventral trap, and up to 1,000 kg of bombs could be carried.