BK-501 1943
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| มส-501 [BK-501], 11.1946- ฬสห-27 [MKL-27], 2.1949- มส-501 [BK-501] | 194 Yd, Leningrad | 10.1942 | 11.4.1943 | 9.1943 | stricken 10.1949 | ||
| มส-502 [BK-502], 11.1946- ฬสห-28 [MKL-28], 2.1949- มส-502 [BK-502] | 194 Yd, Leningrad | 11.1942 | 5.1943 | 9.1943 | stricken 10.1949 | ||
| มส-503 [BK-503], 11.1946- ฬสห-29 [MKL-29], 2.1949- มส-503 [BK-503] | 194 Yd, Leningrad | 1.1943 | 5.1943 | 8.1943 | stricken 10.1949 | ||
| มส-504 [BK-504] | 194 Yd, Leningrad | 2.1943 | 5.1943 | 7.1943 | sunk 4.7.1944 | ||
| มส-505 [BK-505], 11.1946- ฬสห-31 [MKL-31], 2.1949- มส-505 [BK-505] | 194 Yd, Leningrad | 3.1943 | 7.1943 | 8.1943 | stricken 11.1957 | ||
| มส-506 [BK-506], 11.1946- ฬสห-32 [MKL-32], 2.1949- มส-506 [BK-506] | 194 Yd, Leningrad | 4.1943 | 7.1943 | 8.1943 | stricken 11.1957 | ||
| มส-507 [BK-507], 11.1946- ฬสห-33 [MKL-33], 2.1949- มส-507 [BK-507] | 194 Yd, Leningrad | 5.1943 | 8.1943 | 9.1943 | stricken 3.1958 | ||
| มส-508 [BK-508], 11.1946- ฬสห-34 [MKL-34], 2.1949- มส-508 [BK-508] | 194 Yd, Leningrad | 6.1943 | 19.9.1943 | 10.1943 | stricken 3.1958 | ||
| มส-509 [BK-509] | 194 Yd, Leningrad | 1943 | autumn 1943 | 10.1943 | sunk 4.7.1944 | ||
| มส-510 [BK-510], 11.1946- ฬสห-35 [MKL-35], 2.1949- มส-510 [BK-510] | 194 Yd, Leningrad | 7.1943 | 24.10.1943 | 10.1943 | stricken 3.1958 | ||
| มส-511 [BK-511], 11.1946- ฬสห-36 [MKL-36], 2.1949- มส-511 [BK-511] | 194 Yd, Leningrad | 11.1943 | 25.4.1944 | 5.1944 | stricken 11.1957 | ||
| มส-512 [BK-512], 11.1946- ฬสห-37 [MKL-37], 2.1949- มส-512 [BK-512] | 194 Yd, Leningrad | 11.1943 | 27.4.1944 | 7.1944 | stricken 11.1957 | ||
| มส-513 [BK-513], 11.1946- ฬสห-38 [MKL-38], 2.1949- มส-513 [BK-513] | 194 Yd, Leningrad | 12.1943 | 5.1944 | 6.1944 | stricken 11.1957 | ||
| มส-514 [BK-514] | 194 Yd, Leningrad | 1943 | spring 1944 | 6.1944 | sunk 4.7.1944 | ||
| มส-515 [BK-515], 11.1946- ฬสห-39 [MKL-39], 2.1949- มส-515 [BK-515] | 194 Yd, Leningrad | 12.1943 | 1.6.1944 | 7.1944 | stricken 11.1957 | ||
| มส-516 [BK-516], 11.1946- ฬสห-1 [MKL-1], 2.1949- มส-516 [BK-516] | 194 Yd, Leningrad | 3.1944 | 22.7.1944 | 8.1944 | stricken 7.1956 | ||
| มส-517 [BK-517], 11.1946- ฬสห-2 [MKL-2], 2.1949- มส-517 [BK-517] | 194 Yd, Leningrad | 3.1944 | 4.8.1944 | 8.1944 | stricken 7.1956 | ||
| มส-518 [BK-518], 11.1946- ฬสห-3 [MKL-3], 2.1949- มส-518 [BK-518] | 194 Yd, Leningrad | 5.1944 | 30.8.1944 | 9.1944 | stricken 7.1956 | ||
| มส-519 [BK-519], 11.1946- ฬสห-4 [MKL-4], 2.1949- มส-519 [BK-519] | 194 Yd, Leningrad | 5.1944 | 9.1944 | 9.1944 | stricken 9.1955 | ||
| มส-520 [BK-520], 11.1946- ฬสห-5 [MKL-5], 2.1949- มส-520 [BK-520] | 194 Yd, Leningrad | 6.1944 | 9.1944 | 10.1944 | stricken 7.1956 |
|
Displacement standard, t |
151 |
|
Displacement full, t |
158 |
|
Length, m |
36.2 |
|
Breadth, m |
5.50 |
|
Draught, m |
1.28 |
|
No of shafts |
2 |
|
Machinery |
2 Packard petrol engines |
|
Power, h. p. |
2400 |
|
Max speed, kts |
13 |
|
Fuel, t |
petrol 9 |
| Endurance, nm(kts) | 450(10) |
| Armour, mm | belt: 50 - 25, deck: 30 - 15, turrets: up to 45, CT: 8 |
| Armament |
2 x 1 - 76/40 F-34, 2 x 1 - 45/65 21KM, 1 x 1 - 37/63 70K, 2 x 1 - 12.7/79 |
|
Complement |
38 |
Project history: "Seagoing armoured motor gunboats". Wartime design was created in 1941-1942 on the basis of pre-war project 138, originally adapted for building in conditions of beleaguered Leningrad: in particular, she had simplified rectilinear hull form, lend-lease engines and turrets from T-34 tank as originally was planned. Boats differed by strong armament: under design 2 76mm guns, 1 37mm MG, 2 82mm mortars; but already since lead boats they instead of mortars had 45mm guns. Protection of serial boats frequently differed from designed: armour plates which are available at present on a factory were used. The design was approved 15.9.1943: one week prior to commission of lead boat.
Survived MBKs in 1946-1949 were classified as small gunboats.
Ship protection: Belt had 52-50mm thickness abreast citadel and was closed by 14mm fore and 48-30mm aft bulkheads, it was connected with 35-30mm deck. Ship ends outside citadel were protected by 18-14mm belt and 18-12mm deck.
Modernizations: None.
Naval service: BK-504, BK-509 and BK-514 were sunk by German mines 4.7.1944.
BK-506
ฉ Ivan Gogin, 2009-14