Vilun 1937
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| วิรุณ [Vilun] | Mitsubishi, Kobe, Japan | 4.1936 | 24.12.1936 | 9.1937 | stricken 11.1951 | ||
| มัจฉาณุ [Machanu] | Mitsubishi, Kobe, Japan | 4.1936 | 24.12.1936 | 9.1937 | stricken 11.1951 | ||
| สินสมุทร [Sinsamudar] | Mitsubishi, Kobe, Japan | 10.1936 | 14.5.1937 | 1938 | stricken 11.1951 | ||
| พลายชุมพล [Blajunbol] | Mitsubishi, Kobe, Japan | 10.1936 | 14.5.1937 | 1938 | stricken 11.1951 |
|
Displacement standard, t |
|
|
Displacement normal, t |
370 / 430 |
|
Length, m |
51.0 |
|
Breadth, m |
4.11 |
|
Draught, m |
3.65 |
|
No of shafts |
2 |
|
Machinery |
2 diesels / 2 electric motors |
|
Power, h. p. |
1000 / 540 |
|
Max speed, kts |
14.5 / 8 |
|
Fuel, t |
diesel oil 27 |
|
Endurance, nm(kts) |
3000(10) / |
|
Armament |
1 x 1 - 76/40 11-shiki, 1 x 1 - 13.2/76, 5 - 533 TT (4 bow, 1 stern, 7) |
| Electronic equipment | presumably hydrophone |
|
Complement |
24 |
| Diving depth operational, m |
Project history: Small coastal submarines with strong torpedo armament, built in Japan under the 1935 programme. They were designed by Mitsubishi on the basis of Schneider-Laubeuf design. Vilun, Sinsamudar and Blajunbol in some sources are written as Wirun, Sinsamut and Plai Chumpol. The 1938 programme included building of 4 additional boats of this class, however subsequently they were cancelled, and new submarines were never laid down.
Modernizations: None.
Naval service: No significant events.
Blajunbol 1938
© Ivan Gogin, 2011-15