Ha-3-class submarine

Japanese submarine Ha-3, in August 1911
Class overview
Builders: Vickers, Barrow-in-Furness, UK
Operators:  Imperial Japanese Navy
Preceded by: Ha-1 class submarine
Succeeded by: Ha-7 class submarine
In commission: 19111929
Completed: 3
Retired: 3
General characteristics
Type: Submarine
Displacement:
  • 291 long tons (296 t) surfaced
  • 326 long tons (331 t) submerged
Length: 43.3 m (142 ft)
Beam: 4.14 m (13.6 ft)
Draft: 3.43 m (11.3 ft)
Installed power:
  • 600 hp (450 kW) (gasoline engines)
  • 300 hp (220 kW) (electric motors)
Propulsion:
Speed:
  • 12 knots (22 km/h; 14 mph) surfaced
  • 7 knots (13 km/h; 8.1 mph) submerged
Range:
  • 660 nm @ 12 knots (surfaced)
  • 60 nm @ 4 knots (submerged)
Test depth: 30.5 metres (100 ft)
Complement: 26 officers and enlisted
Armament:

The Ha-3 class submarine (波三型潜水艦 Ha-san-gata sensuikan) was an early class of submarines of the Imperial Japanese Navy.

Background

Along with placing orders with Vickers at Barrow-in-Furness in the UK for two British C class submarines, which were commissioned into the Imperial Japanese Navy as the Ha-1 class, the Japanese government ordered another three vessels, which were received as knock-down kits. These kits were assembled at the Kure Naval Arsenal.[1]

Design

Physically almost identical to the Ha-1 class, the three vessels assembled in Japan incorporated a number of improvements, including extended bow for improved seaworthiness, improved rudder for surface handling, and an increase in the size of the bridge and conning tower.

Ships in class

References

External links

Notes

  1. Chesneau, Roger (1985). Conway's All the World's Fighting Ships, 1906–1921. Naval Institute Press. p. 246. ISBN 0-87021-907-3.
  2. 1 2 3 Nishida, Materials of the Imperial Japanese Navy
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