No31 1975
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| (ex-BT-569), 1985- Искар [Iskar] | 36, 1985- 31 | Avangard, Petrozavodsk, USSR | 1968 // 14.9.1970 | stricken 11.2012 | |||
| (ex-BT-154), 1985- Цибар [Tsibar] | 37, 1985- 32 | Avangard, Petrozavodsk, USSR | 1969 // 14.9.1970 | stricken 2005 | |||
| (ex-BT-...), 1985- Добротич [Dobrotich] | 38, 1985- 33 | Avangard, Petrozavodsk, USSR | 1970 // 1971 | stricken 11.2012 | |||
| (ex-BT-569), 1985- Капитан-лейтенант Кирилл Минков [Kapitan-leytenant Kirill Minkov] | 39, 1985- 34 | Avangard, Petrozavodsk, USSR | 1971 // 1971 | stricken 1992 | |||
| Капитан-лейтенант Евстати Винаров [Kapitan-leytenant Yevstati Vinarov] (ex-BT-...) | 35 | Avangard, Petrozavodsk, USSR | 1964-67 // 1985 | stricken 6.2008 | |||
| Капитан 1 ранг Димитр Паскалев [Kapitan 1 rang Dimitr Paskalev] (ex-BT-...) | 36 | Avangard, Petrozavodsk, USSR | 1964-67 // 1985 | stricken 1992 |
|
Displacement standard, t |
254 |
|
Displacement normal, t |
270 |
|
Length, m |
40.5 |
|
Breadth, m |
7.70 |
|
Draught, m |
2.08 |
|
No of shafts |
2 |
|
Machinery |
2 M-870FTK diesels |
|
Power, h. p. |
2400 |
|
Max speed, kts |
14 |
|
Fuel, t |
diesel oil |
|
Endurance, nm(kts) |
1200(10) |
|
Armament |
1 x 2 - 30/71 AK-230M, 2 DCR (27), 8 - 12 mines, IU-1 USV, IT-3 USV, I-2 USV or MT-3 or TS-1 mechanical or PEMT-4 magnetic minesweeping gear, AT-2 acoustic or ST-2 magnetic minesweeping gear or 2 200m-long mine-clearing line charges |
|
Electronic equipment |
Don radar, MG-69 Lan' sonar |
|
Complement |
32 |
Project history: Four Soviet Project 257DME minesweepers were built specially for Bulgarian Navy in 1970-1971, two additional ships of Project 257DM were transferred to Bulgaria after long service under Soviet flag.
Modernizations: None.
Naval service: No significant events.
No36 1977
Yevstati Vinarov 2000
© Ivan Gogin, 2016