LOS ANGELES (AP) ― James Cameron will star in his next big-screen adventure, a chronicle of the expedition on which he has made record-setting ocean dives.

Cameron said he plans a TV special for National Geographic and a 3-D theatrical release on the Deepsea Challenger missions, which included his 11-kilometer descent to the ocean’s deepest point in the Marianas Trench in the western Pacific. It was the deepest solo dive ever.

The film could be ready late this year or early next year, Cameron said in a telephone interview Tuesday night after the premiere of a 3-D version of his 1997 blockbuster “Titanic,’’ which sails into theaters next week in time for the 100th anniversary of the ship’s sinking.

“We’re shooting the whole expedition as a 3-D film,’’ Cameron said from London, where he had rushed for the “Titanic’’ screening after completing his dive Monday in the one-man sub Deepsea Challenger, which he helped design.

Cameron has been planning the expedition since 2005, while he simultaneously worked on the 3-D conversion of “Titanic’’ and made “Avatar,’’ the sci-fi blockbuster that displaced “Titanic’’ as the biggest modern blockbuster with $2.8 billion worldwide.

“Titanic’’ co-star Bill Paxton, who dove with Cameron to the wreck of the ship for “Ghosts of the Abyss,’’ said he had nervously followed accounts of the filmmaker’s latest dive and that his first words when seeing him before Tuesday’s premiere were, “Godspeed, Jim Cameron.’’

“I was very apprehensive and so anxious to hear that he was OK,’’ Paxton said. “Here’s a guy who bets his life on the technology he makes. I’ve been very lucky to have a front-row seat to one of the most remarkable careers in Hollywood and beyond.’’

Cameron’s dive was the first in 52 years to a section of the trench known as Challenger Deep. The only other manned dive there was done in 1960 by U.S. Navy Capt. Don Walsh and Swiss engineer Jacques Piccard.

The documentary will include a dramatized re-creation of Piccard and Walsh’s dive, Cameron said.

Walsh came along with the surface crew on Cameron’s dive and was waiting on the ship when the filmmaker returned.