Voyage to the Bottom of the Sea (1964)

S4E14 The Return of Blackbeard

Blackbeard's ghost is haunting the seas, setting his sights on the Seaview and her crew. He enlists Kowalski, who transforms into a remarkably fierce pirate. Meanwhile, Nelson and Crane face the daunting task of safeguarding the President of the United States, who is visiting a Middle Eastern Shah on a nearby yacht, all while trying to reclaim control of their ship amidst the chaos.