Beriev Be-4

The Beriev Be-4 (originally designated KOR-2) was a reconnaissance flying boat built to operate from Soviet warships during World War II.

Beriev Be-4
Class Aircraft
Type Reconnaissance
Manufacturer Beriev
Origin Russia (USSR)
Country Name Origin Year
Russia (USSR) 1940
Country Name Operational Year Retirement Year
Russia (USSR) 1942 View
ManufacturerName Production From Production To Quantity
Beriev 47 View

In 1939, Beriev was ordered to develop a successor to the KOR-1 design, which would overcome the numerous problems encountered in operational experience with that design. The new aircraft, with the in-house designation KOR-2, first flew on 21 October 1940 at the Beriev factory in Taganrog.

The Be-4 was an elegant, parasol-winged monoplane with a slight inverse-gull wing. The large radial engine was mounted in a nacelle above the fuselage.

Testing continued through January 1941, when series production was ordered under the designation Be-4, at a factory near Moscow. However, due to the start of World War II, only two aircraft were completed. The factory was dismantled, and evacuated to Omsk, then to Krasnoyarsk, where production resumed in May 1943 through the end of 1945. A total of 47 aircraft were eventually completed.

The Be-4 was placed into operational service with the Russian Black Sea Fleet from 1942, where it was used for coastal reconnaissance, anti submarine and transport duties. It was also used on the cruisers Maxim Gorki and Kirov.

Role Reconnaissance flying boat
Manufacturer Beriev
First flight 21 October 1940
Introduction 1942
Primary user Soviet Naval Aviation
Number built ca. 47

General characteristics

  • Crew: three
  • Length: 10.50 m (34 ft 5 in)
  • Wingspan: 12.00 m (39 ft 4 in)
  • Height: 4.05 m (13 ft 3 in)
  • Wing area: 25.5 m2 (274 ft2)
  • Empty weight: 2,082 kg (4,590 lb)
  • Gross weight: 2,760 kg (6,085 lb)
  • Powerplant: 1 × Shvetsov M-62 radial, 746 kW (1,000 hp)


  • Maximum speed: 356 km/h (221 mph)
  • Range: 1,150 km (716 miles)
  • Service ceiling: 8,100 m (26,575 ft)


  • 1 × fixed, forward-firing 7.62 mm ShKAS machine gun
  • 1 × trainable 7.62 mm ShKAS machine gun for observer
  • up to 400 kg (880 lb) of bombs or depth charges

End notes