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