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| Names | Builders | Commissioned | Losses | Transfers | Discarding |
|---|---|---|---|---|---|
Ms-5, 1923- OMm33 Ms-6, 1923- OMm34 |
Ústecká s. r. o.: Ms-5, 6 |
1920: Ms-5, 6 |
none |
none |
1938: OMm33, 34 |
| Displacement standard, t | |
|---|---|
| Displacement full, t | 24 |
| Length, m | 16.9 |
| Breadth, m | 2.80 |
| Draught, m | 0.80 max |
| No of shafts | 1 |
| Machinery | 1 petrol engine |
| Power, h. p. | 55 |
| Max speed, kts | 8 |
| Fuel, t | petrol |
| Endurance, nm(kts) | |
| Armament | 1 x 1 - 7.9/85 |
| Complement | 6 |
Patrol launches were originally commissioned by Army, but later converted to minelayers and transferred to riverine flotilla.
1923-1924, both: petrol engine was replaced by Škoda diesel (100hp, 10.8kts). + 5 - 7 mines
No significant events.

