Technical data
Type SM-62bis MBR-4
Function Maritime Reconnaissater
Year 1930 1933
Crew 33
Engines 1*750hp Izotta-Frascini Asso
Length 12.6m 12.6m
Wingspan 16.6m 16.6m
Wing area 69.52m2 69.52m2
Empty weight 2640kg 2840kg
Loaded weight 4100kg 4300kg
Wing Load (kg/m2) 59.0 62.0
Power load (kg/hp) 5.5 5.7
Speed at 0m 225km/h 220km/h
Cruising Speed 180km/h 180km/h
Landing Speed 90km/h 90km/h
Range 920km 900km
Flight Endurance 4.0h 4.0h
Ceiling 4000m 4300m
1000m 4min 4min
2000m 9min 10min
3000m 17min 19min
Guns 2*mg 2*mg

MBR-4, SM-62bis by Sovoia-Marchetti

32k b/w MBR-4 on skis, "History of aircraft construction in the USSR", Vol.1 p.412

Italian Sovoia-Marchetti S-62bis biplane flying boat, built in Taganrog. Three-seater, with rear gunner position right behind pusher propeller.

Fifty one were built, production was limited by number of engines purchased. First five vere built without blueprints, simply by measuring and copying the original. First of those planes was tested on April 8, 1932 and not accepted for service.

Once blueprints became available, aircraft was designated MBR-4. First 22 were exact copy of the SM-62bis, the rest were modified (structurally) to accommodate more domestic materials. Modified aircraft were designated MBR-4, performance was identical to the SM-62bis. Trials in January 1935 resulted in positive conclusion. Production was limited due to obvious obsolete of the type. Service career of the MBR-4 was short (some 1.5 years), but in 1936- 1937 another small batch (15 aircraft) was built af Factory N°31 under designation MTB-1 (do not mistake it for A.N.Tupolev ANT-27bis).

In service until 1936, when this type was replaced by MBR-2.

  • "History of aircraft construction in the USSR", Vol.1 p.411;
  • MBR-4
  • MBR-4, Sovoia-Marchetti

  • Created January 25, 1996
    Modified July 30, 1998
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