Soviet S-class submarine
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The S-class or Srednyaya submarines were part of the Soviet Navy's underwater fleet during World War II. Unofficially nicknamed Stalinets, boats of this class were the most successful and achieved the most significant victories among all Soviet submarines. In all, they sank 82,770 gross register tons (GRT) of merchant shipping and seven warships, which accounts for about one-third of all tonnage sunk by Soviet submarines during the war.
S-56 on display in Vladivostok
Sea trials of S-1, 1936. Protection of artillery is clearly visible. Artillery itself had not yet mounted.
S-2 and Alexander Marinesco (commander of S-13) on a Moldovan stamp.
S-33 in Black Sea, 1942
Shchuka-class submarine
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The Shchuka-class submarines, also referred to as Sh or Shch-class submarines, were a medium-sized class of Soviet submarines, built in large numbers and used during World War II. "Shchuka" is Russian for pike. Of this class, only two submarines entered service after 1945, although they were launched before the war.
Shch-311 was a Series V-bis-2 Shchuka of the Baltic Fleet
ShCh-203 of the Black Sea Fleet. Probably, in 1942.
Shch-209 alongside the Soviet cruiser Komintern
The preserved conning tower of Shch-307, a member of Series V-bis-2, at Poklonnaya Gora, Moscow