Fast transatlantic ocean crossing

I’m looking for a fast way to get across the Atlantic by ship. What I mean is I’m not looking for a “cruise” per se, but just a passenger ship to get from New York to a point in Europe and back. Are there still such ships in operation? I know about cargo ships having passenger berths, but it sounds like they are even slower than the cruise ships. I’ve heard you can make an ocean crossing in four days is this possible or am I mistaken? Any info. would be appreciated. Maybe I just don’t know where to look.

This may be the best way to go