|ANT-22 and MK-1|
|Role||Reconnaissance flying boat|
The Tupolev ANT-22 (also known as the MK-1) was a large flying boat built in the Soviet Union in 1934. A huge aircraft consisting of two hulls and powered by six engines in three nacelles in a push-pull configuration, it was a follow-up to the ANT-8. Its enormous weight severely crippled its performance; it never got beyond the experimental stage.
Data from The Osprey Encyclopedia of Russian Aircraft 1875–1995 
- Crew: 8
- Length: 24.1 m (79 ft 0¾ in)
- Wingspan: 51.0 m (167 ft 3⅞ in)
- Height: 8.96  m (29 ft 4⅔ in)
- Wing area: 304.5 m2 (3,278 ft2)
- Empty weight: 21,663 kg (47,758 lb)
- Gross weight: 33,560 kg (73,986 lb)
- Powerplant: 6 × Mikulin M-34R, 612 kW (820 hp) each
- Maximum speed: 233 km/h (145 mph)
- Cruising speed: 180 km/h (112 mph)
- Range: 1,350 km (840 miles)
- Endurance: 7 hours
- Service ceiling: 3,500 m (11,500 ft)
- Rate of climb: 1.6 m/s (318 ft/min)
- 2 × 20 mm Oerlikon cannon (one in left dorsal turret and one in right nose turret)
- 2 × 7.62 mm ShKAS machine gun (one in right dorsal turret and one in left nose turret)
- 2 × 7.62mm DA machine guns (one in each tail turret)
- 6,000 kg (13,200 lb) bombs under wing centre section
- Gunston 1995, p.398.
- Duffy and Kandalov 1996, p.208.
- Climb to 1,000 m (3280 ft): 10.3 min.
- Duffy, Paul; Andrei Kandalov (1996). Tupolev The Man and His Aircraft. Shrewsbury, UK: Airlife. ISBN 1-85310-728-X.
- Gunston, Bill (1995). The Osprey Encyclopedia of Russian Aircraft 1875–1995. London: Osprey. ISBN 1-85532-405-9.
- Nohara, Shigeru (2007). 日本の飛行艇 (Imperial Japanese Navy Flying Boat). Tokyo: Kojinsha. p. 37. ISBN 978-4-7698-1363-7.