TM-... coastal minesweeper (project 257M)

TM-21 of Project 257D 1961
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| TM-... | 201 Yd, Poti | 1959 | --- | --- | cancelled 1960 |
|
Displacement standard, t |
300 |
|
Displacement full, t |
320 |
|
Length, m |
40.5 |
|
Breadth, m |
7.70 |
|
Draught, m |
|
|
No of shafts |
2 |
|
Machinery |
2 M-870FTK diesels |
|
Power, h. p. |
2200 |
|
Max speed, kts |
13.5 |
|
Fuel, t |
diesel oil |
|
Endurance, nm(kts) |
1000(10) |
|
Armament |
1 x 2 - 30/71 AK-230M, 2 DCR (27), 8 - 12 mines, IU-1 USV, IT-3 USV, I-2 USV |
|
Electronic equipment |
Don radar, MG-69 Lan' sonar |
|
Complement |
40 |
Project history: Steel-hulled version of Project 257. Never was completed.
© Ivan Gogin, 2015