No. I saw Dead Calm and that wasn't it.  There was no psycho aboard the boat.  Just 3 people who went out sailing on a small sail boat and got caught in a storm.  I didn't finish watching it because I fell asleep, lol

Nicole Kidman wasn't in this movie.  I believe the "known" name was that of a male.

And it wasn't "Ordinary People" either because that doesn't involve a small boat in a torential storm.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi