180304-N-N0101-349 GULF OF MEXICO (March 8, 2018) The future USS Tulsa (LCS 16) is underway for acceptance trials, which are the last significant milestone before delivery of the Independence-variant littoral combat ship to the Navy. During trials, the Navy conducted comprehensive tests of the future USS Tulsa, intended to demonstrate the performance of the propulsion plant, ship handling abilities and auxiliary systems. (U.S. Navy photo courtesy of Austal USA/Released)