I46 1944
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| 伊46 <I46> | Sasebo K K | 11/1942 | 3/6/1943 | 2/1944 | sunk 27/10/1944 | |
| 伊47 <I47> | Sasebo K K | 11/1942 | 29/9/1943 | 7/1944 | surrendered 8/1945, scuttled 1/4/1946 | |
| 伊48 <I48> | Sasebo K K | 6/1943 | 12/12/1943 | 9/1944 | sunk 23/1/1945 |
|
Displacement standard, t |
2184 |
|
Displacement normal, t |
2557 / 3564 |
|
Length, m |
103.8 pp 107.0 wl 109.3 oa |
|
Breadth, m |
9.10 |
|
Draught, m |
5.35 |
|
No of shafts |
2 |
|
Machinery |
2 Kampon diesels / 2 electric motors |
|
Power, h. p. |
11000 / 2000 |
|
Max speed, kts |
23.5 / 8 |
|
Fuel, t |
diesel oil 220 |
| Endurance, nm | 14000(16) / 60(3) |
| Armament |
1 x 1 - 140/40 11-shiki, 1 x 2 - 25/60 96-shiki, 8 - 533 TT (bow, 20) |
|
Sensors |
13-go radar |
|
Complement |
95 |
| Diving depth operational, m | 100 |
Ship project history: Hei-Gata C2 type. Under the 1941 War program building of 6 submarines under slightly advanced Hei-Gata C1 project was provided, the basic difference consisted in some smaller engine power and absence of midget submarine. Only three submarines were completed, orders on remaining I49-51 were cancelled in 1943. 4 more submarines it was supposed to build under the 1942 program (Nos 710-713), but works have not been begun.
Modernizations: late 1944, I47, 48: - 1 x 1 - 140/40, torpedoes stowage was decreased; + 4 Kaiten human torpedoes.
1945, I47, 48: + 2 Kaiten human torpedoes
Naval service: I46 after 27/10/1944 was lost, on one of versions, she was sunk 28/11/1944 in Leyte Gulf by American destroyers, on another 28/10/1944 NE off Surigao Strait by American destroyers Helm, Gridley and carrier aircraft. I48 was sunk 23/1/1945 in Carolina Islands area by American escort destroyers Conklin, Corbesier and Raby. I47 was scuttled by Americans 1/4/1946.
I48
© Ivan Gogin, 2008-10