Does this sound familiar?

Just a quick post as someone asked me if I would knew the movie title.

The scene sounds vaguely familiar, but I can’t come up with a title.

Does anyone know the movie/TV show that fits this description?

I’m looking for a scene from a 70s or 80s movie. It’s a blond woman in a black wet suit on a small yacht looking into the water, presumably waiting for someone to return. But she gets strangled from behind and falls on the deck. This all happens in a few seconds. The killer then rolls her body into the ocean and we see her floating with her eyes open.

If you can help with this….feel welcome to leave a comment!

 

*EDIT*

Well, this mystery was solved quickly….check the comments 😉