Japanese submarine tender Chōgei

Chōgei in 1923
History
Empire of Japan
NameChōgei
Ordered1923 Fiscal Year
BuilderMitsubishi Nagasaki Shipyards
Laid down11 March 1922
Launched24 March 1924
Completed20 August 1924
Out of service30 July 1945
Stricken5 October 1945
ReinstatedOctober 1945 – August 1946 (reparation transport)
FateScrapped 1947
General characteristics initial
Class & typeJingei-class submarine tender
Displacement
  • 5,160 long tons (5,243 t) standard
  • 7,678 long tons (7,801 t) trial
Length
  • 125.40 m (411 ft 5 in) overall
  • 123.00 m (403 ft 7 in) waterline
Beam16.215 m (53 ft 2.4 in)
Draught6.283 m (20 ft 7.4 in)
Installed power7,500 shp (5,600 kW)
Propulsion
  • 2 × Parsons geared turbines
  • 5 × Kampon coal/oil-fired boilers , 2-shafts
Speed16 knots (18 mph; 30 km/h)
Range10,400 nmi (19,300 km) at 14 kn (16 mph; 26 km/h)
Capacity40 torpedoes, 1700 tons of fuel
Complement399
Armament
Aircraft carried
  • 1927-1942
  • 1 × float plane
Aviation facilitiesderrick and deck
General characteristics after 1935
Displacement
  • 6,240 long tons (6,340 t) standard
  • 8,288 long tons (8,421 t) trial
Length123.47 m (405 ft 1 in) waterline
Beam17.15 m (56 ft 3 in)
Draught6.60 m (21 ft 8 in)
Speed16.0 knots (18.4 mph; 29.6 km/h)
Electronic warfare
& decoys
1 × 21-Gō early warning radar
Armament

Chōgei (長鯨, Long Whale), was the second and final vessel of the Jingei-class submarine tenders operated by the Imperial Japanese Navy, from the 1920s through World War II. Along with her sister ship Jingei, she was the first purpose-built submarine tender in the Imperial Japanese Navy.