Russian AS-31 Losharik Spy Submarine Shield Enclosure

This submarine is the most elusive and top-secret item in the Russian Navy. The AS-31 is based out of Olenya Guba, the main submarine operating base for the 29th Separate Brigade of submarines of the Northern Fleet. This unit operates a range of special mission submarines (read ‘spy submarines’) for GUGI (Main Directorate Deep-Sea Research).