The Pacific War Online Encyclopedia
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Tonnage |
2434 tons standard displacement 2919 tons surfaced 4149 tons submerged |
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Dimensions |
367'5" by 31'4" by 17'7" 111.99m by 9.55m by 5.36m |
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Maximum speed |
23.5 knots (surfaced) 8 knots (submerged) |
| Dive | to 330 feet to 100 meters |
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Complement |
114 |
| Aircraft | 1 seaplane |
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Armament |
1 5.5"/50
gun 2x2 25mm/60 machine gun 6 21" torpedo tubes (18 torpedoes) |
| Machinery |
2 Kampon diesels (12,400 shp) electric motors (2400 shp) |
| Bunkerage |
220 tons |
| Range | 16,000 nautical miles (26,000 km) at 16 knots surfaced 90 nautical miles (100 km) at 3 knots submerged |
The A1s were based on the J3s and were fitted to serve as flagships. They were among the most modern submarines in the Imperial Navy, incorporating all the lessons of prewar submarine design and operation.
These boats had a pressure cylinder faired to the front
of their conning tower that could hold a single seaplane. Just forward
of this hangar was a bow catapult for launching the seaplane. These
very large boats had accomodations for the squadron commander and
extensive radio equipment.
The A1s were part of a balanced fleet of submarines to be completed by October 1941. The A1s were intended to direct scouting operations by B1 and C1 class submarines, the former specialized to locate targets and the latter to carry out attacks. Two A1s were initially ordered and completed on schedule. Later, an additional three A1s were ordered, but two of these were
canceled in 1942.
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Approximately 80 miles north of Oahu |
Sunk 1944-6-13 off Kiska
by Frazier |
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| I-10 | Off Christmas Island | Sunk 1944-7-4 off Saipan by Riddle and David W. Taylor |
| I-11 | Completed 1942-5-16 (Kawasaki-Kobe) | Missing from 1944-1-11 off Funafuti |
References
CombinedFleet.com (accessed 2007-12-19)
Gogin (2010; accessed 2012-11-30)
Jentschura, Jung, and Mickel (1977)
The Pacific War Online Encyclopedia © 2007, 2009, 2012 by Kent G. Budge. Index
