Aircraft Carrier Junyo Imperial Japanese Navy

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Aircraft Carrier Junyo Imperial Japanese Navy


Junyo (Japanese aircraft carrier, 1942) Moored at Sasebo, Japan, circa Fall 1945

Junyo (Japanese aircraft carrier, 1942) Moored at Sasebo, Japan, after finished WWII, Fall 1945


The Aircraft Carrier Junyo (or Jun’you) (“Peregrine Falcon”) belonged to the Imperial Japanese Navy and was a unit of the Hiyo (or Hiyou)-class aircraft carrier. She was not initially planned to be an aircraft carrier. She first was laid down and constructed as a passenger vessel called the Kashiwara Maru. However, because the Pacific War she was acquired by the Imperial Japanese Navy in 1941. At that time, she was not finished and was still under construction. This fact contributed to be easily modified into aircraft carrier. She was then completed as aircraft carrier for the IJN in May 1942, just before the Battle of Midway.

She could participated in the Aleutian Island Campaign and also in several battles occurred during the Guadalcanal Campaign in 1942. The lack of operative trained crews and other strategic and tactical reasons led to operate her planes from land bases rather than the carrier deck during the battles of New Guinea and Solomon Islands Campaigns.

On November 1943, the destroyer screen failed to detect an USS submarine and she was torpedoed. The damage could not sink her, but she had to be repaired for three months. During the Battle of the Philippine Sea, in 1944, she was also hit by bombs but could be quickly repaired and be operative. However, the lack of trained crew for pilots and shortage of planes made her little useful as carrier and was used as transport instead for the late 1944.

On December, however, she was torpedoed again, which had her out of operations until May 1945. However, this time the repairs were too expensive in terms or materials and time, and because she could not serve again as n aircraft carrier due to the lack of crews and planes, her repairs were abandoned. She therefore remained hulked the few months before Japan surrendered. The military US forces, after war ended, also concluded that her repairs were not worth the cost and the carrier was broken up during 1946 and 1947.



Class and type: Hiyō-class aircraft carrier
Displacement: 24,150 t (23,770 long tons) (standard)
Length: 219.32 m (719 ft 7 in) (o/a)
Beam: 26.7 m (87 ft 7 in)
Draft: 8.15 m (26 ft 9 in)
Installed power:
  • 56,250 shp (41,950 kW)
  • 6 Kampon water-tube boilers
  • 2 shafts
  • 2 geared steam turbine sets
Speed: 25.5 knots (47.2 km/h; 29.3 mph)
Range: 12,251 nmi (22,689 km; 14,098 mi) at 18 knots (33 km/h; 21 mph)
Complement: 1,187–1,224
Sensors and
processing systems:
1 × Type 2, Mark 2, Model 1 air searchradar
  • 6 × twin 12.7 cm (5.0 in) Type 89 dual-purpose guns
  • 8 × triple 25 mm (1.0 in) Type 96 AA guns
  • Belt: 25–50 mm (0.98–1.97 in)
  • Deck: 25 mm (0.98 in)
Aircraft carried: 48–53

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