TNT has renewed the hit action-adventure The Last Ship, basic cable's top scripted series this summer with adults 25-54. Currently airing Sundays at 9 p.m. (ET/PT), The Last Ship stars Eric Dane (Grey's Anatomy), Rhona Mitra (Strike Back) and Adam Baldwin (Firefly, Chuck). Season 2 will climax with a gripping cliffhanger on Sept. 6. TNT has ordered 13 episodes for the third season, which is slated to launch next summer.