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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.

