Russian submarine BS-64

BS-64 is a Project 667BDRM Delfin-class ballistic missile submarine (NATO reporting name "Delta-IV") of the Russian Navy. She was originally designated K-64.

K-64 was removed from active service in 1999 and was ordered to be refitted. It was planned for her to be reactivated in 2002 to replace the Yankee 'Stretch' class KS-411. KS-411 had been the mothership for the Paltus-class mini submarines, which are believed to be used for a combination of oceanographic research, search and rescue, and underwater intelligence-gathering. Due to lack of funds was this plan postponed, and the new recommissioning date is unknown. K-64 was renamed BS-64 in 2002, and her central section containing 16 silos for ballistic missiles was removed to create space for the installation of scientific-experimental equipment, cabins for scientists and a rest room for the regular crew. The status of this work is unknown and as of 2008 the ship was still moored in Zvezdochka shipyard awaiting completion.