Type A1 submarine
 I-10 1942 | |
| Class overview | |
|---|---|
| Operators: |
 Imperial Japanese Navy |
| Preceded by: | Type J3 submarine |
| Succeeded by: | Type A2 submarine |
| In service: | 1941 - 1944 |
| Completed: | I-9, I-10, I-11 |
| General characteristics | |
| Displacement: | 2,919 tons surfaced 4,149 tons submerged |
| Length: | 372.8 ft |
| Beam: | 31.3 ft |
| Draft: | 17.5 ft |
| Propulsion: | 2 diesels: 12,400 hp electric motors: 2,400 hp |
| Speed: | 23.5 knots (44 km/h) surfaced 8 knots (15 km/h) submerged |
| Range: | 16,000 nautical miles (30,000 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 18 torpedoes 1 × 140 mm 50 calibre gun |
| Aircraft carried: | 1 Yokosuka E14Y seaplane |
The Type A1 submarine (巡潜甲型潜水艦 Junsen kō-gata sensuikan, "Cruiser submarine type A"), also called I-9-class submarine (伊九型潜水艦 I-kyū-gata sensuikan) were submarines of the Imperial Japanese Navy during World War II, equipped with an aircraft. The design was an adaptation of the Type J3 design, with the hangar opening forward of the conning tower.
Three boats were built, and equipped with communication facilities allowing them to operate as the command ships for groups of submarines.
- I-9 was sunk by destroyer USS Frazier in the Aleutians on 11 June 1943.
- I-10 was sunk by destroyer USS David W. Taylor and destroyer escort USS Riddle east of Saipan on 4 July 1944.
- I-11 disappeared off Ellice Island, today Tuvalu, on 11 January 1944.
See also
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