Shch-121 1939
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| Щ-121 [Shch-121] (ex-Зубатка [Zubatka]), 6.1949- С-121 [S-121] | 214 | 194 Yd (Marti Yd), Leningrad // 202 Yd (Dalzavod Yd), Vladivostok | 12.1933 | 26.8.1934 | 4.1935 | stricken 6.1954 | |
| Щ-122 [Shch-122] (ex-Сайда [Sayda]), 6.1949- С-122 [S-122] | 251 | 189 Yd (Ordzhonikidze Yd), Leningrad // 202 Yd (Dalzavod Yd), Vladivostok | 12.1933 | 29.8.1934 | 4.1935 | stricken 6.1954 | |
| Щ-123 [Shch-123] (ex-Угорь [Ugor']), 6.1949- С-123 [S-123] | 215 | 194 Yd (Marti Yd), Leningrad // 202 Yd (Dalzavod Yd), Vladivostok | 12.1933 | 26.8.1934 | 4.1935 | stricken 6.1954 | |
| Щ-124 [Shch-124] (ex-Палтус [Paltus]), 6.1949- С-124 [S-124] | 252 | 189 Yd (Ordzhonikidze Yd), Leningrad // 202 Yd (Dalzavod Yd), Vladivostok | 12.1933 | 29.12.1934 | 9.1935 | stricken 6.1954 | |
| Щ-125 [Shch-125] (ex-Муксун [Muksun]), 6.1949- С-125 [S-125] | 217 | 194 Yd (Marti Yd), Leningrad // 202 Yd (Dalzavod Yd), Vladivostok | 12.1933 | 26.8.1934 | 5.1936 | hulk 8.1953 | |
| Щ-204 [Shch-204] (ex-Минога [Minoga]) | 216/1040 | 189 Yd (Ordzhonikidze Yd), Leningrad // 200 Yd (61 Kommunar Yd), Nikolayev | 6.1934 | 31.12.1934 | 12.1935 | sunk 6.12.1941 | |
| Щ-205 [Shch-205] (ex-Нерпа [Nerpa]), 6.1949- С-205 [S-205] | 1029 | 200 Yd (61 Kommunar Yd), Nikolayev | 1.1934 | 6.11.1934 | 11.1936 | stricken 9.1954 | |
| Щ-206 [Shch-206] (ex-Нельма [Nelma]) | 1030 | 200 Yd (61 Kommunar Yd), Nikolayev | 1.1934 | 1.2.1935 | 8.1936 | sunk 6-7/1941 | |
| Щ-207 [Shch-207] (ex-Касатка [Kasatka]), 6.1949- С-207 [S-207] | 1031 | 200 Yd (61 Kommunar Yd), Nikolayev | 1.1934 | 25.3.1935 | 11.1936 | hulk 9.1954 | |
| Щ-306 [Shch-306] (ex-Пикша [Piksha]) | 250 | 189 Yd (Ordzhonikidze Yd), Leningrad | 11.1933 | 1.8.1934 | 8.1935 | sunk 16.11.1942 | |
| Щ-307 [Shch-307] (ex-Треска [Treska]) | 249 | 189 Yd (Ordzhonikidze Yd), Leningrad | 11.1933 | 1.8.1934 | 8.1935 | charging plant 4.1948 | |
| Щ-309 [Shch-309] (ex-Дельфин [Delfin]) | 550/3 | 112 Yd (Krasnoye Sormovo Yd), Gorkiy | 11.1933 | 10.4.1935 | 11.1935 | stricken 3.1949 | |
| Щ-310 [Shch-310] (ex-Белуха [Belukha]), 6.1949- С-310 [S-310] | 550/4 | 112 Yd (Krasnoye Sormovo Yd), Gorkiy | 11.1933 | 10.4.1935 | 8.1936 | stricken 8.1953 | |
| Щ-311 [Shch-311] (ex-Кумжа [Kumzha]) | 550/5 | 112 Yd (Krasnoye Sormovo Yd), Gorkiy | 11.1933 | 10.4.1935 | 8.1936 | sunk 12.10.1942 |
|
Displacement standard, t |
|
|
Displacement normal, t |
Shch-121 - 125: 618 / 721 Shch-204 - 207: 610 / 706 Shch-306, 307, 309 - 311: 589 / 708 |
|
Length, m |
Shch-121 - 125, 204 - 207: 58.8 Shch-306, 307, 309 - 311: 57.8 |
|
Breadth, m |
6.20 |
|
Draught, m |
Shch-121 - 125: 4.08 Shch-204 - 207: 4.30 Shch-306, 307, 309 - 311: 3.97 |
|
No of shafts |
2 |
|
Machinery |
2 38B8 diesels / 2 PGV-8 electric motors |
|
Power, h. p. |
1370 / 800 |
|
Max speed, kts |
Shch-121 - 125: 11.9 / 6.7 Shch-204 - 207: 12.9 / 7.5 Shch-306, 307, 309 - 311: 12.3 / 8 |
|
Fuel, t |
diesel oil 58 |
|
Endurance, nm(kts) |
5350(7) / 100(2) |
|
Armament |
Shch-121 - 125, 204 - 207: 2 x 1 - 45/43 21K, 6 - 533 TT (4 bow, 2 stern, 10) Shch-306, 307, 309 - 311: 1 x 1 - 45/43 21K, 2 x 1 - 12.7/79, 6 - 533 TT (4 bow, 2 stern, 10) |
|
Electronic equipment |
Merkuriy or Mars-A or Mars-DM or Mars-ShM hydrophone Shch-309: none |
|
Complement |
37 - 40 |
|
Diving depth operational, m |
75 |
Project history: Well-known "Shchukas" ("pikes"): the most mass series of Soviet WWII-era submarines. They were designed since 1928 as patrol small (later medium) submarines for Baltic. The big effect on the design was rendered by raised British submarine L55 from which there was borrowed architectural type: saddle-tank with bulge tanks, and a hull form. III series submarines differed by only one 45mm gun, all subsequent submarines received two, nevertheless, weakness of artillery armament during war remained one of the main lacks of the project.
Submarines were built in six series, but intra-serial differences were insignificant. Intended for Pacific V series (originally III-bis) were built taking into account requirements to transportation by railways and subsequent assembling; they had other division on compartments, CT form and was built with wide application of welding. On V-bis (originally VII) and V-bis-2 series the light hull and CT form were changed. Maximal diving depth for all series was 90m. Submarines of V-bis-2 and X-bis series differed by the best seaworthiness among all Soviet WWII submarines.
Modernizations: 1940 - 1943, some boats among Shch-121 - 125, 204 - 207: - 1 x 1 - 45/43; + 1 x 1 - 12.7/79
1940-1941, Shch-206, Shch-306, Shch-310, Shch-311; 1941-1942, Shch-205, Shch-207, Shch-307, Shch-309; 1940-1943, Shch-121, Shch-122, Shch-123, Shch-124, Shch-125: - hydrophone; + Mars-12 hydrophone
early 1941, Shch-204: - 2 x 1 - 45/43; + 1 x 1 - 100/49 B-24.
1942 - 1945, Shch-122, Shch-123, Shch-125: + 20 mines
1944, Shch-205; 1945, Shch-121, Shch-124, Shch-310: + type 129 sonar
Naval service: Shch-204 was lost 6.12.1941 on a mine at Varna. Shch-206 presumably was sunk 9.7.1941 by Romanian torpedo boat Naluca and MTBs S of Constanza. Shch-306 was lost between 13 and 16.11.1942 between Nargen and Porkkala, possibly, on a mine. Shch-311 was lost presumably 12.10.1942 on a mine at Big Tyuters Island (Gulf of Finland).
Shch-311
© Ivan Gogin, 2009-15