In this 2007 file photo provided by the U.S. Navy, the research submarine NR-1 is moored at U.S. Naval submarine base, in New London, Conn. The nuclear-powered NR-1, launched in Groton in 1969, was one of the most secretive vessels in the U.S. undersea force.
Photo by Associated Press /Chattanooga Times Free Press .
published Wednesday, November 13th, 2013
Stories this photo appears in:
GROTON, Conn. — It could dive deeper than any other submarine, and when it reached the ocean floor, the one-of-a-kind Navy vessel could roll on wheels with lights illuminating the depths outside its windows.