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| Names | Builders | Completed | Losses | Transfers | Discarding |
|---|---|---|---|---|---|
MAS319 - 323 |
SVAN, La Spezia: MAS319-323 |
9/1919: MAS319 - 321 |
cancelled 6.1920: MAS322, 323 |
none |
1920: MAS321 1928: MAS319 1931: MAS320 |
| Displacement normal, t | 11.4 |
|---|---|
| Displacement full, t | 14.2 |
| Length, m | 16.0 |
| Breadth, m | 2.86 |
| Draught, m | 1.20 |
| No of shafts | 2 |
| Machinery | 2 Isotta Fraschini petrol engines |
| Power, h. p. | 700 |
| Max speed, kts | 28 |
| Fuel, t | petrol |
| Endurance, nm(kts) | 180(26) |
| Armament | (2 - 3) x 1 - 6.5/115, 2 - 450 TT, 4 DC |
| Complement | 8 |
So-called "12-ton" boats designed by A. Bisio (SVAN) and built by different builders in 1916-1918. Boats differed from each other by armaments and engines. Some (1, 4 and 6th series) were extra equipped with 10hp electric motors for silent running.
None.
No significant events.

