Cap'm Stabbin's Anal Adventures: Cap'n Stabbin and his mates pick up unsuspecting young women, invite them to go for a boat ride, bang them in the ass and throw them overboard in the middle of the ocean.
Totally contrived, totally staged, ridiculous nautical terms for everything, a few fairly attractive young ladies, but mostly coeds and strippers trying to break into porn. Most are never seen again.
So maybe they really do throw them overboard once they've loosened up their sphincters...