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| Names | Builders | Commissioned | Losses | Transfers | Discarding |
|---|---|---|---|---|---|
T21-31 |
Kockums, Malmö: T21-31 |
1942-1943: T21-31 |
no |
no |
10/1957: T25-27, 30 1-5/1959: T21-24, 28, 29, 31 |
| Displacement standard, t | 27 |
|---|---|
| Displacement full, t | |
| Length, m | 20.0 |
| Breadth, m | 5.00 |
| Draught, m | 1.50 |
| No of shafts | 2 |
| Machinery | 2 Isotta-Fraschini petrol engines |
| Power, h. p. | 3000 |
| Max speed, kts | 49 |
| Fuel, t | petrol |
| Endurance, nm(kts) | |
| Armament | 1 x 1 - 20/63 K/66 M40, 2 - 533 TT |
| Complement | 11 |
Advanced design of Т15 class with heavier torpedoes.
none.
no significant events.

