| Name: | OPYT also seen as OPUT |
| Type: | Paddle Tug |
| Launched: | 1870 |
| Completed: | 1870 |
| Builder: | C Mitchell & Co |
| Yard: | Low Walker |
| Yard Number: | 233 |
| Dimensions: | 187grt, 130.0 x 23.6 x 2.3 (draft) ft |
| Engines: | 2cyl, 60nhp |
| Engines by: | |
| Propulsion: | Paddle |
| Construction: | Iron |
| Reg Number: | n/a |
| History: | |
| 1870 | Russian Steam Navigation & Trading Co, Sevastopol |
| 1877 | Russian Imperial Navy - Black Sea fleet |
| 1879 | Bulgarian Navy |
| 1887 | Renamed SIMEON VELIKY (SIMEON THE GREAT) |
| 07/1913 | Sank |
| Comments: | 1869: Shipped in parts for assembly at Sevastopol |
| 1877: Converted into an armed tug | |
| 1879: Gifted to the Bulgarian Navy for use on the River Danube | |
| Converted into a royal yacht with passenger accommodation | |
| 1883: Converted back into a river tug | |
| 1899: Converted into a minelayer | |
| 07/1913: Scuttled by her crew on the River Danube | |
| During the Second Balkan War of 1913 | |
| 1914: Raised and broken up |
Above photo as SIMEON VELIKI is copyright of Bulgarian MOD, Central Photo Archive