Operation Bikini 1963 Written by John Tomerlin and directed by Anthony Carras. An American International Picture that was produced by Lou Rusoff, James H Nicholson and Samuel Z Arkoff. William Shatner is the uncredited narrator.
Tab Hunter is the head of a Navy underwater demolition team that's been assigned the task of blowing up a sunk US Navy submarine before the Japanese can get their hands on the new advanced radar system. The team has to travel by submarine to Bikini Atoll where they find the Japanese have already located the sub. With the help of some locals they battle the Japanese and blow the hell out of the sub.
It's a B&W film with odd bits of color inserted. Frankie Avalon sings a song while dreaming of his girl. The dream is in color, a truncated version of that scene is shown again later in the film. At the end of the film there's a scene of the Bikini atomic test and then it switches to color with scenes of girls in bikinis running around on a beach while the credits roll past.
It's the directorial debut of Anthony Carras, he edited a lot of AIPs films, he directed one more film in 1971. Sadly his debut is pretty basic with little to stand out. The cast is some better than the script.Besides Tab and Frankie we've got Jim Backus, Scott Brady, Gary Crosby, Michael Dante, Jody McCrea, Aki Aleong and a bunch of people I didn't know. William Shatner is the uncredited narrator.
I watched it and after a short while I switched to 1.5 speed to move things along a bit faster. There's a lot of cliched scenes, typical friction among the two different Navy teams to make it tense in the sub. An island romance develops, while on a mission, and the native woman later dies in a fire fight. Who needs that? You can find out if it's worth your while, I'm thinking it's below average enough to give it a 4, there's a link to the film on YouTube.