The Pacific War Online Encyclopedia
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| Previous: B2 Class, Japanese Submarines | Table of Contents | Next: B4Y "Jean", Japanese Torpedo Bomber |
National Archives #80-G-260244
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Tonnage |
2140 tons standard displacement 2607 tons surfaced 3688 tons submerged |
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Dimensions |
350'9" by 30'6" by 17'0" 106.91m by 9.30m by 5.18m |
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Maximum speed |
17.7 knots (surfaced) 6.5 knots (submerged) |
| Dive | to 330 feet (100 m) |
| Complement |
94 |
| Aircraft | 1 seaplane |
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Armament |
1 5.5"/50
gun 1x2 25mm/60 machine gun 6 21" torpedo tubes (19 torpedoes) |
| Machinery |
2-shaft diesel (4700 hp) or
electric (1200 hp) |
| Range | 21,000 nautical miles (34,000 km) at 16 knots surfaced 105 nautical miles (170 km) at 3 knots submerged |
| Modifications | The boats were eventually fitted with snorkels. Surviving units received Type 13 air search radar and Type 22 surface search radar in late 1944. 1945: I-56 and I-58 were converted to carry 4 Kaiten each by removing the aircraft equipment and 5.5" gun. |
The B3s were virtually identical with the B2s except that speed was sacrificed for range. They were completed at the Yokosuka Navy Yard in 1943-1944. An additional eight units of a slightly expanded version (B4 class) were authorized but never laid down.
Some authors list the B3s as B2s, the B2s as B1s, and the B1s as Bs.
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Completed 1944-3-31 (Yokosuka) |
Sunk 1944-10-24 off Leyte
by Richard M. Rowell |
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| I-56 | Completed 1944-8-8 (Yokosuka) | Sunk 1945-4-18 off Okinawa by Collett, Heermann, McCord, Mertz, Uhlmann and aircraft from Bataan |
| I-58 | Completed 1944-9-7 (Yokosuka) |
References
CombinedFleet.com
(accessed 2008-1-5)
Jentschura, Jung, and Mickel (1977)
The Pacific War Online Encyclopedia © 2007, 2009, 2012 by Kent G. Budge. Index
