Nebraska Submarine The ballistic-missile submarine USS Nebraska passes by Seattle during sea trials after completing an extended major maintenance period, to include an engineered refueling overhaul at Puget Sound Naval Shipyard and Intermediate Maintenance Facility. Navy photo by Seaman Joseph W. Weiser SHARE: Download: Full Size (1.23 MB) Tags: Puget Sound, Submarine, Ohio-class, Engineered Refueling Overhaul, sea trials, USS Nebraska, SSBN 739, ballast tank, PSNS, Puget Sound Naval Shipyard, Ballistic-missile Credit: Navy photo by Seaman Joseph W. Weiser VIRIN: 170602-N-TA321-501.JPG Photo Gallery