| Class overview | |
|---|---|
| Operators: | Imperial Japanese Navy |
| Preceded by: | Type A1 submarine |
| Succeeded by: | Type AM submarine |
| In service: | 1944 - 1945 |
| Completed: | I-12 |
| General characteristics | |
| Displacement: | 2,934 tons surfaced 4,172 tons |
| Length: | 372.8 ft |
| Beam: | 31.5 ft |
| Draught: | 17.5 ft |
| Propulsion: | 2 diesels: 4,700 hp electric motors: 1,200 hp |
| Speed: | 17.7 knots (33 km/h) surfaced 6.2 knots (11 km/h) submerged |
| Range: | 22,000 nautical miles (41,000 km) at 16 knots (30 km/h) |
| Test depth: | 100 m (330 ft) |
| Complement: | 114 officers and men |
| Armament: |
6 × 533 mm forward torpedo tubes |
| Aircraft carried: | 1 Yokosuka E14Y seaplane |
The Type A2 submarine was a single class of submarine in the Imperial Japanese Navy during World War II, consisting of one boat, I-12, equipped with an aircraft. The design was similar to the earlier Type A1 submarine, except for the A2's having weaker engines. The boat thus had a lower surfaced speed but a longer range.
Like the Type A1, this submarine was designed to act as a headquarters boat coordinating the operations of submarine squadrons. However, unlike the Type A1, the Type A2 submarine was ineffective in its role and in its only patrol, she sank a freighter and machine gunned the survivors.[1]
USS Ardent (AM-340) and USS Rockford (PF-48) sank a Japanese submarine on 13 November 1944. Postwar research reveals that it was most likely I-12.
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