page_title: Kawanishi H8K
section_title: Specifications (Kawanishi H8K2)
hierarchical_section_title: Kawanishi H8K / Specifications (Kawanishi H8K2)
caption_attribution_description: Detail of the tail gunner position of a Kawanishi H8K2 Type 2 flying boat at Kanoya Museum in Japan. It was codenamed Emily by allied force. This example is manufacture 426.
context_page_description: The Kawanishi H8K is a flying boat used by the Imperial Japanese Navy Air Service during World War II for maritime patrol duties. The Allied reporting name for the type was "Emily".
  The Kawanishi H8K was a large, four-engine aircraft designed for long range and extended endurance on patrols or bombing missions typically flown alone over the ocean. The prototype first flew in January 1941 and H8K1s made their first combat sortie in March 1942. The robust H8K2 "Emily" flying boat was also fitted with powerful defensive armament, which Allied pilots had substantial respect for wherever this aircraft was encountered in the Pacific theater. The H8K was called by aircraft historian René Francillon "the most outstanding water-based combat aircraft of the Second World War."
context_section_description: Data from 
  General characteristics
  Crew: 10
  Length: 28.13 m (92 ft 3 in)
  Wingspan: 38 m (124 ft 8 in)
  Height: 9.15 m (30 ft 0 in)
  Wing area: 160 m² (1,700 sq ft)
  Empty weight: 18,380 kg (40,521 lb)
  Gross weight: 24,500 kg (54,013 lb)
  Max takeoff weight: 32,500 kg (71,650 lb)
  Powerplant: 4 × Mitsubishi MK4Q Kasei 22 14-cylinder air-cooled radial piston engines, 1,380 kW (1,850 hp)  each for take-off
  1,253 kW (1,680 hp) at 2,100 m (6,900 ft)
  1,148 kW (1,540 hp) at 5,500 m (18,000 ft)
  Propellers: 4-bladed constant-speed propellers
  Performance
  Maximum speed: 467 km/h (290 mph, 252 kn) at 5,000 m (16,000 ft)
  Cruise speed: 296 km/h (184 mph, 160 kn) at 4,000 m (13,000 ft)
  Ferry range: 7,152 km (4,444 mi, 3,862 nmi)
  Service ceiling: 8,850 m (29,040 ft)
  Time to altitude: 5,000 m (16,000 ft) in 10 minutes 12 seconds
  Wing loading: 153.1 kg/m² (31.4 lb/sq ft)
  Power/mass: 0.225 kW/kg (0.137 hp/lb)
  Armament
  Guns: 
  5× 20 mm (0.787 in) Type 99 Mark 1 machine gun (one each in bow, dorsal, and tail turrets, plus one each in two waist blisters)
  5× 7.7 mm (0.303 in) Type 92 machine guns in fuselage hatches
  Bombs: 2× 800 kg (1,800 lb) torpedoes or 2,000 kg (4,400 lb) of bombs or depth charges
  Avionics
  Mark VI Model 1 ASV radar
caption: Tail gunner position (without gun)
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