A little birdy told me this might be in the Black Sea....
http://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Ohio-class_submarine_launches_Trident_ICBMs_(artist_concept).jpg/800px-Ohio-class_submarine_launches_Trident_ICBMs_(artist_concept).jpg
We’re not stuffing Boomers into the Black Sea.
The only entrance to the Black Sea is through the city of Istanbul, with a channel only 700 yards wide.