NAVYPEDIA

Photo

BMO-622 1947

Ships

Names	Builders	Commissioned	Losses	Transfers	Discarding
СК-318 [SK-318] СК-418 [SK-418], 1.1945- MO-418 СК-501 [SK-501], 1.1945- MO-501 СК-502 [SK-502], 1.1945- MO-502 СК-503 [SK-503] СК-504 [SK-504], 1.1945- MO-504 СК-505 [SK-505], 1.1945- MO-505 СК-506 [SK-506] СК-507 - 509 [SK-507 - 509], 1.1945- MO-507 - 509 СК-510 - 512 [SK-510 - 512] СК-513 - 516 [SK-513 - 516], 1.1945- MO-513 - 516 СК-517 [SK-517] СК-518 [SK-518], 1.1945- MO-518 СК-519 [SK-519], 1.1945- MO-519 СК-520 Чкаловец [SK-520 Chkalovets], 1.1945- МО-520 Чкаловец [MO-520 Chkalovets] СК-521 Юный Чкаловец [SK-521 Yunyy Chkalovets], 5.1944- СК-521 Чкаловский Комсомолец [SK-521 Chkalovskiy Komsomolets], 1.1945- МО-521 Чкаловский Комсомолец [MO-521 Chkalovskiy Komsomoltets] СК-522 Чкаловский Пионер [SK-522 Chkalovskiy Pioner] СК-523 Хабаровский Комсомол [SK-523 Khabarovskiy Komsomol], 1.1945- МО-523 Хабаровский Комсомол [MO-523 Khabarovskiy Komsomol] СК-524 Балтиец [SK-524 Baltiets] СК-525 Герой Советского Союза Котов [SK-525 Geroy Sovetskogo Soyuza Kotov], 1.1945- МО-525 Герой Советского Союза Котов [MO-525 Geroy Sovetskogo Soyuza Kotov] СК-526 [SK-526], 1.1945- MO-526 СК-527 Тамбовский Осоавиахимовец [SK-527 Tambovskiy Osoaviakhimovets], 9.1944- МО-527 Тамбовский Осоавиахимлвец [MO-527 Tambovskiy Osoaviakhimovets] MO-528 MO-529 СК-530 Конструктор-судостроитель [SK-530 Konstruktor-sudostroitel], 1.1945- МО-530 Конструктор-судостроитель [MO-530 Konstruktor-sudostroitel] СК-531 [SK-531], 1.1945- MO-531 СК-532 [SK-532], 1.1945- MO-532 MO-533 - 537 МО-538 Советский Старатель [MO-538 Sovetskiy Staratel] MO-539 - 546 MO-621 - 638	196 Yd, Leningrad: SK-318, 418, 501-527, 530-532, MO-528, 529, 533-546, 621-638	1943: SK-318, 418, 501 - 519 1944: SK-520 Chkalovets, SK-521 Yunyy Chkalovets, SK-522 Chkalovskiy Pioner, SK-523 Khabarovskiy Komsomol, SK-524 Baltiets, SK-525 Geroy Sovetskogo Soyuza Kotov, SK-526, SK-527 Tambovskiy Osoaviakhimovets, MO-528, 529, SK-530 Konstruktor-sudostroitel, SK-531, 532, MO-533 - 537, MO-538 Sovetskiy Staratel, MO-539 - 546 1945: MO-621 - 638	SK-318 (30.10.1943), SK-503 (4.7.1944), SK-506 (1.7.1944), SK-510 (14.2.1944), SK-511 (14.2.1944), SK-512 (17.10.1944), SK-517 (9.6.1944), SK-522 Chkalovskiy Pioner (6.8.1944), SK-524 Baltiets (4.8.1944), MO-527 Tambovskiy Osoaviakhimovets (17.10.1944)	Poland, 4.1946: MO-542? (Bitny), MO-546 (Blyskawiczny)	1950s: all survived

Technical data

Displacement standard, t	53
Displacement full, t	55
Length, m	24.8
Breadth, m	4.20
Draught, m	1.60
No of shafts	2
Machinery	2 Packard W8 petrol engines / 1 ZIS-5 petrol engine for cruising
Power, h. p.	2400 / 68
Max speed, kts	21 / 6
Fuel, t	petrol 7.2
Endurance, nm(kts)	495(8.4)
Armour, mm	belt: 10, deck: 12 - 8, CT: 12 - 8
Armament	1 x 1 - 37/63 70K, 2 x 2 - 12.7/79, 1 x 1 - 12.7/79 or 1 x 2 - 12.7/79, 2 DCR (12) or 10 mines boats built in 1944 - 1945: 1 x 1 - 37/63 70K, (1 x 1 - 45/65 21KM, 2 x 2 - 12.7/79) or 3 x 2 - 12.7/79, 2 DCR (12) or 10 mines
Electronic equipment	Tamir-1 sonar
Complement	22

Standard scale images

Graphics

Project history

Armoured small submarine chasers. They were designed and built in beleaguered Leningrad that has predetermined a number of prominent features: in particular rectilinear hull form. Steel-hulled, vital parts (engine room, tanks, deck house) were protected by armour. Boats were equipped with two main motors and one cruising motor.

Ship protection

Armour protected CT, machinery and fuel tanks.

Modernizations

None.

Naval service

No significant events.