The S-56 is a genuine WWII submarine moored on the Vladivostok waterfront as a museum ship. You can climb down through the hatches into the original crew quarters, control room, and torpedo compartments — all claustrophobically authentic. The crew of 47 lived in conditions that make modern standards look spacious, and the museum does an honest job of showing what submarine warfare actually entailed.
The submarine sits on the embankment near the railway station, making it easy to combine with a visit to the waterfront. The exterior is painted in the Soviet naval style with the red star insignia. A small exhibition covers the submarine's wartime history and the role of the Pacific Fleet. Bring a jacket — the interior is cold and damp even in summer.