SSSR-V6 OSOAVIAKhIM (Russian: СССР-В6 Осоавиахим) was a semi-rigid airship designed by the Italian engineer and airship designer Umberto Nobile and constructed as a part of the Soviet airship program. The airship was named after the Soviet organisation OSOAVIAKhIM. V6 was the largest airship built in the Soviet Union and one of the most successful. In October 1937, it set a new world record for airship endurance of 130 hours 27 minutes under command of Ivan Pankow, beating the previous record by the German airship Graf Zeppelin.
|Manufacturer||Soviet airship program|
|First flight||5 November 1934|
|Status||Destroyed in crash on 6 February 1938|
In February 1938, a Soviet Arctic expedition led by Ivan Papanin became stranded on the drifting ice pack. It was decided to send the V6 on a rescue mission, starting from Moscow with a short intermediate landing in Murmansk.
During the flight, at approximately 19:30 on 6 February 1938, the airship crashed into the hillside near Kandalaksha, 220 km south of Murmansk. She caught fire and was destroyed. Of the 19 people on board, 13 perished. Their remains were laid to rest at the Novodevichy Cemetery in Moscow. In 1972, a memorial was erected at the crash site by local authorities and the citizens of Kandalaksha. There is also a memorial sign in Dolgoprudny, the then Soviet airship base.
As was officially communicated by TASS, the crash was due to poor visibility and insufficient flight altitude. The conclusions of the government commission appointed to investigate the disaster were never made publicly available and remained classified for the decades. Among the circumstances resulted in the disaster there have long been rumored act of sabotage, outdated charts, and human error, but no evidences were ever presented.
The recent research revealed that the airship flew off her route as the crew lost orientation in completely unfamiliar district because of darkness and snowfall. Supposedly, contributing to the disorientation were inefficient use of radio navigation equipment (Telefunken's and Fairchild's RC-3 radio direction finders), lack of general navigational experience, and human fatigue. Barometric altimeters could have accumulated error while the crew was unable to maintain constant visual control of the altitude.
The accident was a severe blow to the Soviet airship program which was eventually terminated in 1940.
Data from Belokrys (2017)
- Crew: 15
- Length: 104.5 m (342 ft 10 in)
- Width: 18.4 m (60 ft 4 in)
- Height: 25.5 m (83 ft 8 in)
- Volume: 19,400 m3 (685,105 cu ft)
- Empty weight: 11,700 kg (25,794 lb)
- Useful lift: 9,640 kg (21,253 lb)
- Powerplant: 3 × Maybach Mb.IVa engines , 194 kW (260 hp) each
- Maximum speed: 111 km/h (67 mph, 58 kn)
- Cruise speed: 104 km/h (64 mph, 56 kn)
- Range: 4,800 km (2,980 mi, 2,590 nmi) 
- Endurance: 103 hours 27 minutes
- Service ceiling: 3,300 m (10,827 ft) Maximum height actually reached.
- Belokrys (2011), p. 153.
- Belokrys (2017), p. 6.
- Belokrys (2017).
- Belokrys (2017), pp. 237, 299, 422, 427, 430, 433.
- Maximum distance actually covered.
- Belokrys, Aleksei. Dirizhablestroi na Dolgoprudnoi: 1934-i, odin god iz zhizni [Dirizhablestroi in Dolgoprudnaya: 1934, one year of life]. Moscow, Russia: Paulsen, 2011. ISBN 978-5-98797-060-7 (in Russian).
|Wikimedia Commons has media related to SSSR-V6 OSOAVIAKhIM.|
- Air Force Museum - Monino, Russia Grave for Crew of Soviet Airship SSSR-B6 at the Novodevichy Cemetery, Moscow
- Images of the V6 (Russian)
- Map and photo of the monument at the crash site (comments in Russian)
- Photos and bluprint of the V6 (Russian)
-  Umberto Nobile. V6 wins the World's Duration Record (Russian)
-  Umberto Nobile. The Tragic End of V-6 (Russian)