U-475 Black Widow decaying in the River Medway in Strood, Kent, uk. Black Widow was built at Sudomekh shipyard in Leningrad and commissioned in 1967.It was based at Riga and served with the Soviet Baltic Fleet before being used as a training vessel for crews from overseas who would be operating Foxtrot-class subs in their own navies.It was decommissioned in 1994 and sold. In 2004 it was moved to her present location, in a state of disrepair, and is currently awaiting restoration.