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Kawanishi E7K "Alf"
Type: Twin Float Recon Seaplane
Origin: Kawanishi Kokuki K.K.
Crew: Three, in tandem open cockpits
Allied Code Name: E7K2: Alf
Models: E7K1 & 2
First Flight:
    E7K1: February 6, 1933
    E7K2: August 1938
Service Delivery: Early 1935
Final Delivery: 1941
Production: 530
Powerplant(s):
  Prototypes and early production E7K1):
    Model: Hiro Type 91
    Type: 12-Cylinder liquid cooled W
    Number: One
    Horsepower:
    – Take-Off Power: 620 hp
    – At 3,280 ft. (1,000m): 520 hp
    Propeller: Two-blade wooden propeller

  Late production E7K1:
    Model: Hiro Type 91
    Type: 12-Cylinder liquid cooled W
    Number: One
    Horsepower:
    – Take-Off Power: 750 hp
    – At 4,920 ft. (1,500m): 600 hp
    Propeller: Four-blade wooden propeller

  E7K2:
    Model: Mitsubishi Zuisei 11
    Type: 14-Cylinder air-cooled radial
    Number: One
    Horsepower:
    – Take-Off Power: 870 hp
    – At 7,545 ft. (2,300m): 850 hp
    Propeller: Two-blade metal propeller

Dimensions:
Wing Span: 45 ft. 11 3/16 in. (14.00m)
Length:
  E7K1 (Late): 34 ft. 1 27/32 in. (10.41m)
  E7K2: 34 ft. 5 3/8 in. (10.5m)
Height:
  E7K1 (Late): 15 ft. 9 3/8 in. (4.81m)
  E7K2: 15 ft. 10 15/32 in. (4.85m)
Wing Area: 469.305 sq. ft. (43.6m²)
   Weights:
Empty:
  E7K1 (Late): 4,343 lb. (1,970 kg.)
  E7K2: 4,630 lb. (2,100 kg.)
Loaded:
  E7K1 (Late): 6,614 lb. (3,000 kg.)
  E7K2: 7,275 lb. (3,300 kg.)
Wing Loading:
  E7K1 (Late): 14.1 lb/ft² (68.8 kg/sq²)
  E7K2: 15.5 lb/ft² (75.7 kg/sq²)
Power Loading:
  E7K1 (Late): 8.8 lb/hp (4 kg/hp)
  E7K2: 8.4 lb/hp (3.8 kg/hp)
Performance:
Max. Speed:
  E7K1 (Late): 148 mph at 1,805 ft.
  E7K2: 171 mph (275 kph) at 6,560ft.
Service Ceiling:
  E7K1 (Late): N/A
  E7K2: 23,165 ft. (7,060 m)
Climb to 9,845 ft. (3,000m):
  E7K1 (Late): 10 minutes 45 seconds
  E7K2: 9 minutes 6 sec
Endurance:
  E7K1 (Late): 12 hours
  E7K2: 11 hours 32 minutes
Armament:
One 7.7mm Type 92 machine gun
    Location: Fixed, forward firing

One 7.7mm Type 92 machine gun
    Location: Flexible, rear firing

One 7.7mm Type 92 machine gun
    Location: Flexible, downward firing

External Stores:
Four 66 lb. (30 kg.) bombs.
-Or-
Two 132 lb. (60 kg.) bombs.

Sources:
The Complete Encyclopedia of World Aircraft, 1997, Barnes & Nobles Books, ISBN: 0 7607 0592 5
Japanese Aircraft of the Pacific War, René J. Francillon, 1970, Naval Institue Press, ISBN: O-87021-313-X
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