Submarine B-413

Ruslan Shamukov/TASS

Launched in 1968, the Soviet Submarine B-413 remained in service until 1999, serving first in the Arctic Fleet, then the Baltic Fleet of the Russian Navy. All its machinery, instruments and weapons are exactly the same as they were when the submarine was relegated to museum status. The B-413 is unique in that it is one of the few pre-nuclear, diesel-powered submarines still extant in the world, and the only one in Russia. The submarine seems too small and congested to accommodate a crew of 80, but it did.