K8W
Role Floatplane trainer
National origin Japan
Manufacturer Watanabe
First flight 1938
Primary user Imperial Japanese Navy
Number built 3

The Watanabe K8W was a Japanese floatplane trainer designed and built by Watanabe for the Imperial Japanese Navy.

Development and design

In 1937, the Imperial Japanese Navy drew up a specification for a 12-shi[a] primary floatplane trainer to replace its Yokosuka K4Y or Navy Type 90 Primary Seaplane Trainer. The specification was issued to the established builders of aircraft for the Navy, Kawanishi and Watanabe and to the relative newcomer Nihon Hikoki (also known as "Nippi").[2] The specification required use of the same Gasuden Jimpu radial engine used by the K4Y, and the three designs showed little changes from the aircraft they were to replace.[3]

Watanabe's design, which was given the short designation K8W1, was, like the other two designs, a single-engine biplane with a fabric-covered steel-tube fuselage and a wooden wing, with two floats. The trainee and instructor sat in individual open cockpits.[4] The first of three prototypes made its maiden flight in 1938.[4] The Watanabe design was judged inferior to that of the Kawanishi design, and thus did not enter production.

Specifications

Data from [3]

General characteristics

Performance

References

  1. ^ In the Japanese Navy designation system, specifications were given a Shi number based on the year of the Emperor's reign it was issued. In this case 11-Shi stood for 1936, the 11th year of the Shōwa era.[1]
  1. ^ Mikesh & Abe 1990, pp. 2, 286
  2. ^ Mikesh & Abe 1990, pp. 141, 240, 261
  3. ^ a b Mikesh & Abe 1990, pp. 260–261
  4. ^ a b Mikesh & Abe 1990, p. 141
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