TNT has renewed its hot frosh drama “The Last Ship” and set a fifth and final season for sci-fi epic “Falling Skies.”

“Major Crimes” has also been picked up for a fourth season. And its stalwart detective drama “Rizzoli & Isles” is close to a pickup as well.

TNT is rolling out a boatload of original series this summer in a big test for the cabler and its programming chief, Michael Wright. So far, TNT is faring well, with “Last Ship” exceeding expectations.

The timing couldn’t be better for Wright, as Turner is in the midst of a top-to-bottom makeover under new CEO John Martin. Wright, prez of programming for TNT, TBS and TCM, is a candidate to fill the vacancy left by the departure in April of Steve Koonin as prexy of Turner Entertainment Group.

“TNT’s refreshed and recharged drama brand is soaring this summer, and that is due in large part to these three enormously popular dramas,” Wright said.

“Last Ship” has been picked up for 13 episodes, up from 10 for its debut season. Series starring Eric Dane and Rhona Mitra revolves around a Navy destroyer that avoids an apocalyptic event that wipes out most of the Earth’s population. Hank Steinberg is showrunner and co-created the show with Steven Kane for Michael Bay’s Platinum Dunes banner. The show opened big for TNT last month and has since averaged 7.2 million viewers in Nielsen’s Live plus 7 measure.

“Major Crimes,” a spinoff of “The Closer,” has held up well and been given a 15-episode order for season four. “Falling Skies” will wrap up its alien-invasion saga with 10 episodes.