S-7
| Country | Russia |
| Ship Class | Srednyaya-class Submarine |
| Builder | Krasnoye Sormovo Factory No. 112, Gorky, Russia |
| Laid Down | 14 Dec 1936 |
| Launched | 5 Apr 1937 |
| Commissioned | 30 Jun 1940 |
| Sunk | 21 Oct 1942 |
| Displacement | 840 tons standard; 1,050 tons submerged |
| Length | 255 feet |
| Beam | 21 feet |
| Draft | 14 feet |
| Machinery | Two diesel engines (2,000hp), two electric motors (550hp), two propellers |
| Speed | 19 knots |
| Range | 9,800 miles at 10 knots surfaced, 148 miles at 3 knots submerged |
| Crew | 48 |
| Armament | 4x533mm forward torpedo tubes, 2x533mm aft torpedo tubes, 12 torpedoes, 1x100mm B-24-2 gun, 1x45mm 21-K gun |
| Submerged Speed | 9 knots |
Contributor: C. Peter Chen
ww2dbaseSoviet submarine S-7 was built at Krasnoye Sormovo Factory No. 112 named after Andrei Zhdanov in Gorky, Russia. After sinking 4 Swedish, Finnish, and German transport ships, she was sunk by Finnish submarine Vesihiisi southwest of Aland Islands, Finland on 21 Oct 1942. 4 men out of the crew of 48, including the commanding officer, survived the sinking; all 4 were rescued and were made prisoners of war. The wreck of submarine S-7 was found by a Swedish diving team in Jul 1998.
ww2dbaseSource: uboat.net
Last Major Revision: Jun 2013
Submarine S-7 Interactive Map
S-7 Operational Timeline
| 14 Dec 1936 | The keel of submarine S-7 was laid down at Krasnoye Sormovo Factory No. 112 in Gorky, Russia. |
| 5 Apr 1937 | Submarine S-7 was launched at Gorky, Russia. |
| 30 Jun 1940 | Submarine S-7 was commissioned into service. |
| 2 Jul 1942 | Submarine S-7 departed Moshchny Island near Leningrad, Russia. |
| 9 Jul 1942 | Submarine S-7 attacked Swedish transport Noreg east of Arkösund, Sweden at 1617 hours; the torpedo missed. At 1958 hours, she sank Swedish transport margareta in the same area. |
| 11 Jul 1942 | Submarine S-7 sank Swedish transport Swedish transport Lulea east of Västervik, Sweden. |
| 14 Jul 1942 | Submarine S-7 attacked a Swedish convoy north of Kalmar Strait in the Baltic Sea; both torpedoes missed. |
| 27 Jul 1942 | Submarine S-7 damaged German transport Ellen Larsen south of Venspils, Latvia with her deck gun after a failed torpedo attack. |
| 30 Jul 1942 | Soviet submarine S-7 sank German ship Kathe 1 mile off Pavilosta, Latvia. |
| 5 Aug 1942 | Soviet submarine S-7 sank Finnish freighter Pohjanlahti with her deck gun 10 miles off Pavilosta, Latvia; the captain was captured, and charts of German and Finnish minefields in the Baltic region were acquired by the Soviets. |
| 11 Aug 1942 | Submarine S-7 arrived at Moshchny Island near Leningrad, Russia. |
| 18 Oct 1942 | Submarine S-7 departed Moshchny Island near Leningrad, Russia. |
| 21 Oct 1942 | Finnish submarine Vesihiisi sank Soviet submarine S-7 southwest of Aland Islands, Finland with one torpedo at 2041 hours; 44 were killed, 4 survived. |
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Thomas Dodd, late 1945
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6 Feb 2016 08:09:27 PM
My grandfather's brother, Efim Yampolsky, perished on this submarine on Oct. 21st, 1942.