| | Coastal minesweepers
Project 1256 TopazNATO:
Andryusha Class
Completed 2
units
Ships Sredne-Nevskiy Shipyard,
Pontonny
| Name |
Yard Ή |
Laid Down |
Launched |
Commissioned |
Note |
| BT-177 |
Ή516 | - |
- | 1.12.1974? |
from 13.03.1975 - Altayskiy komsomolets, from 15.02.1992 - BT-177 |
| BT-137 |
Ή517 | - |
- | 1.12.1974? | from
11.06.1975 - Komsomolets Estonii, from 15.02.1992 - BT-137 |
General characteristics - Project 1256
| Displacement (tons): | | Standard: | 386 |
| Full load: | 473 |
| Dimensions (m): | | Length: | 47,9 |
| Beam: | 8,7 |
| Draft: | 2,36 | | Speed
(knots): | 38 | | Range: | 500
nmi (15 knots) | | Autonomy (days): | 3 |
| Propulsion: | 2x4750 hp M-504A-3
diesels, 1x20000 hp M-8NL gas turbine, 1x200 kW diesel generator , 1x100 kW diesel
generator | | Armament: | 1x6
30 mm AK-306 – 500 rounds
8 KSM mines or 6 KMD-1000 mines or 4 Kalmar mines |
| Electronics: | Rym radar,
Don-D navagation radar, Nikhrom IFF, ARP-58SV radio direction finder, RTU-2V
remote control equipment | | Complement: | 20
(3 officers) |
Schematics 
Coastal minesweeper - Project 1256
Modernizations On
BT-177 (Tallin Shipyard) in 1985 M-504A-3 diesels was replaced by 2x4950 hp M-504A-4
diesels
Fleets Baltic Fleet:
BT-137, 177
Hull Numbers
BT-137: 533(1984), 573(1990), 525(1992), 523(1993)
BT-177: 646, 556(Altayskiy komsomolets), 546(1984),
549(1986), 520(1988), 506(1990)
Decommissioned 1993
– BT-137 (30.06), BT-177 (30.06)
Export --- | |
