Keywords: US Navy 111018-N-UD469-048 Navy Diver 1st Class Spencer Puett, assigned to Southwest Region Maintenance Center at Naval Air Station North Island.jpg en SAN DIEGO Oct 18 2011 Navy Diver 1st Class Spencer Puett assigned to Southwest Region Maintenance Center at Naval Air Station North Island inspects a cofferdam before attaching it to the hull of the aircraft carrier USS Nimitz CVN 70 The cofferdam works as a watertight seal for the ship so maintenance can be performed U S Navy photo by Aviation Machinist's Mate Airman Amanda Huntoon/Released 2011-10-18 111018-N-UD469-048 Navy http //www navy mil/view_image asp id 109218 U S Navy photo by Aviation Machinist's Mate Airman Amanda Huntoon PD-USGov-Military-Navy Aboard USS Nimitz CVN-68 Cofferdams |