Dangerous Tides (1998)

The cruise ship Adreanna has set sail to Mexico. Onboard has berthed a group of sex-crazed swingers, ready for some fun in the sun. Who's in charge of these hot-blooded hedonists? None other than that gorgeous nymph, Jenna Jameson. Well, everything's just shipshape until they receive a dubious distress call from a sinking ship... The passengers are blissfully unaware as they frolic around on deck. Turns out the shipwreck victims are none other than a bunch of terrorists hell-bent on taking over the ship. Not if Jenna can help it.