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Kyūshū K11W
Kyūshū K11W in postwar markings.
Role Bomber crew trainer (K11W1)
Manufacturer Kyūshū Aircraft Company
First flight 1942
Introduced 1943
Primary user Japan
Produced 1942 - 1945
Number built 798

The Kyūshū K11W Shiragiku (白菊, "White Chrysanthemum") made by the Kyūshū Aircraft Company, was a land-based bombing trainer aircraft which served in the Imperial Japanese Navy in the latter years of World War II. As indicated by its Japanese designation, "training aircraft for on-board work" (機上作業練習機), it was designed to train crews in operating equipment for bombing, navigation, and communication, as well as navigation techniques. A total of 798 K11Ws were manufactured, including a small number of K11W2 ASW and transport aircraft alongside the K11W1 trainer variant. These aircraft were also used in kamikaze mission during the last stages of the Pacific War.

The aircraft had a rather simple mid-wing layout. The crew consisted of a pilot and gunner/radio operator sitting in line under the canopy and the trainee bombardier, trainee navigator, and instructor in the lower fuselage beneath the wing.

The K11W served as the basis for the Q3W1 Nankai (南海, "South Sea") anti-submarine patrol aircraft, which did not progress beyond the development phase. It was enlarged, and like the K11W, had retracting landing gear.



  • K11W1 : The basic bomber crew trainer, of all-metal construction with fabric-covered control surfaces.
  • K11W2 : Anti-submarine warfare and transport version of all-wood construction.
  • Q3W1 Nankai : Project only.

Specifications (K11W1)

Data from Japanese Aircraft of the Pacific War [1]

General characteristics

  • Crew: five
  • Length: 10.24 m (33 ft 7⅛ in)
  • Wingspan: 14.98 m (49 ft 1¾ in)
  • Height: 3.93 m (12 ft 10¾ in)
  • Wing area: 30.50m² (328 sq ft)
  • Empty weight: 1,677 kg (3,697 lb)
  • Loaded weight: 2,640 kg (5,820 lb)
  • Max takeoff weight: 2,800 kg (6,173 lb)
  • Powerplant: 1× Hitachi GK2B Amakaze 21 9-cylinder radial, 384 kW (515 hp) (take-off power)



  • Guns: 1 × 7.7 mm rear-firing machine gun
  • Bombs: 2 × 30 kg (66 lb) bombs on training role, or 1 × 250 kg (550 lb) bomb on kamikaze missions


  1. ^ Francillon 1970, p.332.
  • Francillon, R.J. Japanese Aircraft of the Pacific War. London:Putnam, 1970. ISBN 0 370 00033 1.
  • Mondey, David. The Concise Guide to Axis Aircraft of World War II. London:Chancellor Press, 1996. ISBN 1 85152 966 7.

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