I156 1942
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| 伊56 <I56>, 5/1942- 伊156 <I156> | Kure K K | 11/1926 | 23/3/1928 | 3/1929 | surrendered 8/1945, scuttled 1/4/1946 | |
| 伊57 <I57>, 5/1942- 伊157 <I157> | Kure K K | 7/1927 | 1/10/1928 | 12/1929 | surrendered 8/1945, scuttled 1/4/1946 | |
| 伊59 <I59>, 5/1942- 伊159 <I159> | Yokosuka K K | 3/1927 | 25/3/1929 | 3/1930 | surrendered 8/1945, scuttled 1/4/1946 | |
| 伊60 <I60> | Sasebo K K | 10/1927 | 24/4/1929 | 12/1929 | sunk 17/1/1942 | |
| 伊63 <I63> | Sasebo K K | 1926 | 28/9/1927 | 12/1928 | collision 2/2/1939 |
|
Displacement standard, t |
1635 |
|
Displacement normal, t |
1800 / 2300 |
|
Length, m |
94.0 pp 98.9 wl 101.0 oa |
|
Breadth, m |
7.90 |
|
Draught, m |
4.90 |
|
No of shafts |
2 |
|
Machinery |
2 Kampon diesels / 2 electric motors |
|
Power, h. p. |
6800 / 1800 |
|
Max speed, kts |
20 / 8 |
|
Fuel, t |
diesel oil 190 |
| Endurance, nm(kts) | 10000(10) / 90(3) |
| Armament |
1 x 1 - 120/45 11-shiki, 8 - 533 TT (6 bow, 2 stern, 16) |
|
Complement |
79 |
| Diving depth operational, m | 60 |
Ship project history: Kaidai 3b (Large Admiralty 3b) type. Built under the 1923-1928 program. Should become repetition of Kaidai 3 type, however during trials of a lead submarine of this type I53 a number of constructive lacks, such as insufficient stability and vibration on high speed has been revealed. Besides submarine was not possible to reach design 22kts. For lacks correction designers brought a number of changes into project: the hull was lengthened, its lines were a little changed, size of CT was moderated. After that project was renamed as Kaidai 3b (boats of first series began to be called Kaidai 3à).
Modernizations: 4/1945, I156, I157, I159: - 1 x 1 - 120/45; + 2 Kaiten human torpedoes.
Naval service: I63 was lost as result of collision with I60 off Kyushu 2/2/1939 in the Bungo Straits, she was raised 22/1/1940 and broken up. I60 17/1/1942 was sunk in Sunda Strait by British destroyer Jupiter. Remained three boats in 1942 were re-rated as training submarines and laid up in April, 1944, conversion to Kaiten carriers started late the same year. I156, I157 and I159 were scuttled by Americans 1/4/1946.
I59
© Ivan Gogin, 2008-10