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No.4 class submarine chaser

IJN No8 submarine chaser in 1938.jpg
No.8 in 1938
Class overview
Name: No.4 class submarine chaser
Builders:
Operators:
Preceded by: No.3 class
Succeeded by: No.13 class
Cost: 1,579,000 JPY
Built: 1937 – 1939
In commission: 1938 – 1960
Planned: 9
Completed: 9
Lost: 7 (or 6)
Retired: 2 (or 3)
General characteristics
Type: Submarine chaser
Displacement:
  • 291 long tons (296 t) standard
  • 309 long tons (314 t) trial
Length:
  • 56.2 m (184 ft 5 in) overall
  • 55.5 m (182 ft 1 in) waterline
Beam: 5.6 m (18 ft 4 in)
Draught: 2.1 m (6 ft 11 in)
Propulsion: 2 × Kampon Mk.22 Model 6 diesels, 2 shafts, 2,600 bhp
Speed: 20.0 knots (23.0 mph; 37.0 km/h)
Range: 2,000 nmi (3,700 km) at 14 kn (16 mph; 26 km/h)
Complement: 59
Armament:
  • 2 × 40 mm heavy machine guns
  • 36 × depth charges
  • 2 × Type 94 depth charge projectors
  • 1 × depth charge thrower
  • 1 × Type 93 active sonar
  • 1 × Type 93 hydrophone
  • No.4, November 1944
  • 2 × 40 mm heavy machine guns
  • 3 × Type 96 25 mm AA guns
  • 36 × depth charges
  • 2 × Type 94 depth charge projectors
  • 2 × depth charge throwers (estimate)
  • 1 × 13-Gō surface search radar
  • 1 × Type 3 active sonar
  • 1 × Type 93 hydrophone

The No.4 class submarine chaser (第四号型駆潜艇, Dai 4 Gō-gata Kusentei?) was a class of submarine chasers of the Imperial Japanese Navy (IJN), serving during and after World War II. 9 vessels were built in 1937-39 under the Maru 3 Programme.


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