Recognition Guide Warships of the Second World War

Submarine class

Type 3 submergence transport vehicle

The class in numbers

  • 420 Planned
  • 38 Completed
  • 4 Lost
  • 34 Scrapped

Design and service

Type
Submarine
Built
1943–45
In commission
1943–45
Operators
Imperial Japanese Army
Builders
  • Hitachi
  • Japan Steel Works
  • Andō Iron Works
  • Chōsen Machinery
Subclasses
Yu I type, Yu 1 (Hitachi Ltd.), Yu 1001 (Japan Steel Works), Yu 2001 (Andō Iron Works), Yu 3001 (Chōsen Machinery), Yu II type, Ushio (Prototype, Hitachi Ltd.)

Class specifications

Figures for the class as designed. Individual vessels varied, sometimes considerably — each vessel page carries its own configurations.

Yu I type
Displacement, surfaced
274 long tons (278 t)
Displacement, submerged
346 long tons (352 t)
Length
41.4 m (135.8 ft) OA
Speed
10 knots (18.5 km/h, 11.5 mph)
Complement
23
Main gun
37 mm (1.5 in)
Armament
  • Yu 1, Yu 2 and Yu 3
  • 1 × Type 4 37 mm shipboard gun
  • 5 × Type 99 light machine guns
  • Yu 1001
  • 1 × Type 4 37 mm shipboard gun
  • 2 × IJN Type 92 13 mm AA guns
  • Yu 2001
  • 1 × Type 4 37 mm shipboard gun
Yu II type
Displacement, surfaced
430 long tons (437 t)
Displacement, submerged
540 long tons (549 t)
Length
55 m (180.4 ft) OA
Speed
14.5 knots (26.9 km/h, 16.7 mph)
Main gun
47 mm (1.9 in)
Armament
  • 1 × Type 1 47 mm AT gun
  • 5 × Type 98 20 mm AA guns

Sources