Blohm & Voss BV 138

BV 138 MS, with degaussing ring

Technical data (BV 138C-1)

Type: Long-range Maritime Reconnaissance Flying Boat

Power Plant: Three Junkers Jumo 205 D six-cylinder vertical opposed-piston compression-ignition two-stroke engines, each rated at 880hp for take-off.

Armament: One 20-mm MG 151 cannon in bow turret, one 20-mm MG 151 cannon mounted in turret in hull tail, and one 13-mm MG 131 machine gun on open position aft of central engine, plus (optional) one 7.9-mm MG 15 machine gun firing through hatch in starboard side of hull. (Offensive) Three 110-lb. bombs on racks beneath the starboard wing centre section, or (U1) six 110-lb. bombs or four 331-lb. depth charges.

Performance:

    • maximum speed: 177 m.p.h. at sea level (at 31967 lb.)
    • normal cruising speed: 146 m.p.h. at 3280 ft.
    • climb to 10390 ft.: 24 min.
    • service ceiling at 31967 lb.: 16400 ft.
    • service ceiling at 38912 lb.: 9185 ft.
    • normal range: 758 miles at 122 m.p.h.
    • maximum range: 2670 miles with 825 Imp. gal.
    • normal endurance: 6.5 hrs
    • maximum endurance: 18 hrs

    Weights:

      • empty: 25948 lb.
      • normal loaded: 31967 lb.
      • maximum loaded: 38912 lb.

      Dimensions:

        • span: 88 ft. 4.25 in.
        • length: 65 ft. 1.5 in.
        • height: 19 ft. 4.25 in.
        • wing area: 1205.558 sq. ft.

        Versions

        Prototypes:

          • Ha 138 V1 - (D-ARAK), flew 15 Jul 1937
          • Ha 138 V2 - (D-AMOR), flew Aug 1937, redesigned
          • Ha 138 V3 - never completed, scrapped

          Models:

            • BV 138A-0 - 6 delivered 1939, 1st flew Feb 1939, one modified to B-0 standard
            • BV 138A-1 - 25 delivered 1939-40, 1st tested Apr 1940
            • BV 138B-0 - 10 delivered 1940, normal loaded weight increased from 30313 lb. to 31930 lb.
            • BV 138B-1 - 21 delivered from Dec 1940, Jumo 205 D engines, increased defensive armament
            • BV 138B-1/U1 - offensive load increased, see armament above
            • BV 138C-1 - delivered from Mar 1941, structural strengthening, four-bladed airscrew, a 13-mm MG 131 replaced the 7.9-mm MG 15 machine gun, and an optional 7.9-mm MG 15 could be added. Some were later fitted with the FuG 200 Hohentwiel radar. About 70 BV 138C-1 were fitted with with catapult points for operation from the Luftwaffe 's seaplane tenders.
            • BV 138C-1/U1 - similar to B-1/U1 version
            • BV 138MS - few BV138C-1 were converted to minesweepers in 1942-43, no armament, dural hoop used to sweep mines (see image above).

            Production:

              • 1939: Blohm & Voss (Finkenwerder), 6
              • 1940: Blohm & Voss (Finkenwerder), 49
              • 1941: Blohm & Voss (Finkenwerder), 79; Weser Flugzeugbau (Einswarden), 1
              • 1942: Blohm & Voss (Finkenwerder), 59; Weser Flugzeugbau (Einswarden), 66 (total for 1942/43)
              • 1943: Blohm & Voss (Finkenwerder), 30; Weser Flugzeugbau (Einswarden), 66 (total for 1942/43)

              Units:

                • Kustenfliegergruppe 406
                • Kustenfliegergruppe 506
                • Kustenfliegergruppe 906
                • Seeaufklärungsgruppe 125
                • Seeaufklärungsgruppe 126
                • Seeaufklärungsgruppe 129
                • Seeaufklärungsgruppe 130
                • Seeaufklärungsgruppe 131
                • Kustenflieger-Ergänzungsstaffel 138
                • Minensuch-Gruppe 1 der Luftwaffe
                • Kampfgruppe zur besonderen Verwendung 108

                Exports:

                  • No exports

                  Preserved aircraft:

                  None survives today.

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This webpage was updated 22nd April 2024

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