E13A “Jake”, Japanese Reconnaissance Floatplane

Photograph of E13A "Jake" floatplane

U.S. Air Force. From Francillon (1979).

3-view diagram of E13A "Jake"

U.S. Army. Via

Aichi E13A1a "Jake"


Crew Three in tandem cockpit
Dimensions 47'7" by 37'1" by 24'3"
14.50m by 11.30m by 7.39m
Wing area 387.5 sqare feet
36.0 square meters
Weight 5825-8025 lbs
2642-3640 kg
Speed 234 mph at 7155 feet
377 km/h at 2180 meters
Cruising speed       138 mph at 6560 feet
222 km/h at 2000 meters
Climb rate 27 feet per second
8.2 meters per second
Ceiling 28,640 feet
8730 meters
Power plant One 1000 hp (746 kW) Mitsubishi Kinsei 43 14-cylinder air-cooled radial engine driving a three-blade metal propeller.
Armament One flexible 7.7mm Type 92 machine gun in the rear cockpit
External stores One 250kg (551 lb) bomb, four 60kg (132lb) bombs, or depth charges
Range 1,298 miles
2088 km
Production A total of 1418 E13A1s were built:

Aichi Tokei Denki K.K., Funakata:
  133 aircraft (1938-42)

Dai-Juichi Kaigun Kokusho, Hiro:
  48 aircraft (1940-42)

Kyushu Hikoki K.K., Zasshonokuma:
  1237 aircraft (1942-45)

Also known as the Type 0 Reconnaissance Seaplane, "Jake" was the replacement for the E7K "Alf" and was the most numerous float plane produced by the Japanese. Though lightly armed and unarmored, its long endurance suited its role as a patrol reconnaissance and transport aircraft. It was used in bombing missions when no enemy fighter opposition was expected, as over China early in the war.

The design was a response to a June 1937 call for a two-seat replacement for the Alf. Aichi, Nakajima and Kawanishi all responded to the initial call, but when the Navy issued a new specification for a three-seat reconnaissance seaplane, Kawanishi decided to concentrate on completing its two-seat design instead. Aichi finished a prototype three-seater in late 1938 that proved superior to the Nakajima model, being faster, steadier, and more maneuverable, though also larger and heavier. By then the Navy had lost interest in the two-seat designs, and "Jake" went into production in December 1940. It saw its combat debut in late 1941 over the Canton-Hankow Railway in China and scouted for the Pearl Harbor Attack Force.

Towards the end of the war, "Jake" was armed with a downward-firing 20mm Type 99 Model 1 cannon for use against PT boats. It also was sometimes equipped with Type 6 radar or with the Jikitanchiki magnetic anomaly detector for use against submarines. The Jikitanchiki was not very sensitive, requiring the plane to fly no more than 40 feet above the surface.

Photo Gallery

E13A Jake in flight

Wikimedia Commons

E13A Jake in service

Wikimedia Commons

FM 30 -30 page on E13A Jake

U.S. Navy

FM 30 -30 page on E13A Jake

U.S. Navy



Francillon (1979)

Wilson (1998)

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