Beau Flynn and Basil Iwanyk are launching development on “Mayday 109”, based on the 1943 sinking of John F. Kennedy’s PT boat during World War II, Variety reports.

The producers have acquired a script by Samuel Franco and Evan Kilgore. Kent Kubena and Taylor Zea will oversee for Thunder Road and Scott Sheldon will oversee for Flynn Picture Co.

Kennedy was the commander of patrol torpedo boat PT 109 in the South Pacific when it was rammed by a Japanese destroyer Amagin, killing two crewmen. With the crew presumed dead by allies, Kennedy led the 11 survivors in swimming to a deserted island, where the crew had to hide from passing Japanese barges.

Kennedy swam over two miles to two other islands in search of help and food, then led his men to Olasana Island, which had coconut trees and drinkable water, before they were rescued. He and his shipmates engaged friendly locals and after scrawling an SOS on a coconut, they were finally located by rescuers.

Warner Bros. released “P.T. 109” in 1963 with Cliff Robertson starring as Kennedy. It was the first commercial theatrical film about a president released while he was still in office.

Flynn’s producing credits include “San Andreas,” “Hercules” and “Hansel and Gretel: Witch Hunter.” Iwanyk produced “The Town,” “Sicario” and “John Wick.”

The news was first reported by Deadline Hollywood.