Series IX Srednyaya class (1934)
Soviet Navy Series IX, IX bis (1934-48), 40 boats, last active 1960s. Commonly dubbed as the S-class, for “Srednyaya” (medium), the series IX and IXbis were arguably the best Soviet submarines of WW2. They superficially looked like the German Type VII U-Boat and this was not fortuitous: Their design origins lays in the relations between … Read more