Technical data
Type KOR-1
Function reconnaissance
Year 1936
Crew 2
Engines 1*635/700hp M-25
Length 8.67m
Height ?m
Wingspan 11.0m
Wing area 29.3m2
Empty weight 1800kg
Loaded weight (normal) 2486kg
Loaded weight (overload) 2686kg
Wing Load (kg/m2) 85(92)
Power load (kg/hp) 3.6(3.8)
Speed at 0m 245km/h
Speed at 2000m 277km/h
Landing Speed 100km/h
Landing Roll 16sec
Takeoff Roll 250m 15sec
Turn time 18sec
Range 530(1000)km
Flight Endurance 3hmin
Ceiling 6600m
1000m 3.2min
5000m 20min
Fuel 293kg
Guns 2+1*7.62mm ShKAS
Bombs (overload) 2*100kg FAB-100

KOR-1 (KR-2, TsKBMS-3), G.M.Beriev (NATO 'Mote')

29k photo of the KOR-1, courtesy of Andrew I. Salnikov

License-built KR-1 flying boat turned obsolete in mid-30's, and in 1934 first records appear about next generation reconnaissater (designated KR-2). It was intended for catapult launch from 'Kirov' class cruisers. Ice-breaking fleet of the Polar seas also was interested.

KR-2 project was assigned to the Taganrog-based TsKBMS, lead by G.M.Beriev. On 22 November 1934 the VVS Command approved project of classic single-float biplane, designated KOR-1 (TsKBMS-3).

(32k) KOR-1 model; Roy Cochrun posted this photo in November 1996 on his Page;

New aircraft had to fulfill following duties:
  • maritime reconnaissance;
  • artillery spotting;
  • dive bombing;
  • liaison;
  • air-to-air combat;

  • In 1935 Soviet Government ordered design of domestic catapults.

    Experimental TsKBMS-3 was flown 4 September 1936. It had a all-metal frame (steel tubes for fuselage, aluminum alloy profiles for the wings) with fabric skin on wings, fuselage and tail. Catapult 'hook' was installed. Dual controls (for pilot and gunner/observer) were installed. Wings could be folded backwards for storage goals. Aircraft carried also a photocamera and radio-equipment. Original engine cowling was similar to one of the I-16.

    Armament included two 7.62mm ShKAS on the upper wing and one defensiveShKAS for gunner/observer. In overload TsKBMS-3 could take two 100kg bombs.

    200k b/w drawing, courtesy of Andrew I. Salnikov

    Trials ended in 1936, outcome was far from brilliant. Handling of the KOR-1 (designation for series aircraft) was a complicated task. Even without the main float, KOR-1 had 40% higher drag than similar in size land-based DI-6 2-seat fighter. Numerous design and manufacturing defects were revealed, most of them were cured already on series production stage. Land-based variant also was built and saw extensive service.

    Prior to installation of modern catapults on the ships KOR-1 was used for training purposes, on both float and wheels. Old K-3 type catapult also was suitable for KOR-2 launch.

    21k b/w photo, from article atVVS Rossii

    Aircraft entered production despite failed to fulfill project requirements - there were no alternative projects at the time (probably due to intensive political purges). It had better flight performance than the KR-1, while seaworthiness of single-float aircraft was behind one of the flying boat. Successful catapult design was ready (and deployed on modern cruisers) only in 1939. At the time engine cowling was redesigned to provide better engine cooling during taxi.

    On the outbreak of the Great Patriotic War KOR-1 was retired from the ships and was used only from the shore. On Baltic's they served as reconnaissaters and S.A.R. aircraft. On the Black Sea during Sevastopol Siege (31 October 1941 - 4 July 1942) KOR-1 served as light strike aircraft. It was used in land-based configuration. During this combat KOR-1 received designation Be-2.

    - -

  • "History of aircraft construction in the USSR", Vol.2 p.132-133;
  • M.Maslov 'Shipborn Reconnaissaters. Projects and reality.' - Wings over the Sea, special issue of Aviation-Historic magazine 'Mir Aviatsii', 1995, pp.3-4;
  • V.Kotelnikov. 'Floatplanes of the Second World War 1939-1945'. Addition to 'Mir Aviatsii', issue 10. Publishing House 'Aviatsia i Kosmonautika' 1996, p.24
  • Be-2 (KOR-1) (in Russian)
  • Be-2 (in Russian)
  • Be-2, Beriev
  • KOR-1, Beriev
  • Be-2 (KOR-1) at Virtual Aircraft Museum
  • Beriev page with some history and aircraft data;
  • Beriev aircraft

  • Created November 25, 1996
    Modified June 16, 1999
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