The Naval research submarine NR-1 docks alongside a submarine support ship. The Naval research submarine NR-1 docks alongside the submarine support ship MV Carolyn Chouest at Naval Station Norfolk, Va., on Oct. 24, 2006. NR-1 is the Navy's smallest and only research submarine. The vessel performs underwater search and recovery, oceanographic research missions, installation and maintenance of underwater equipment to a depth of almost a half mile. SHARE: Download: Full Size (0.12 MB) Tags: Military Services, News Photos, Other Subjects, Lead Photos, DoD Organizations, Navy Credit: VIRIN: 387332-N-VUR26-129.jpg Photo Gallery