I have fond memories as a kid crossing the North Atlantic in October. I can’t say how big the waves were other than to say YUGE!
A bunch of us kids went to a long corridor (passageway) and walked back and forth. The ship must have been heading right into the waves. It was a blast!
When the ship dove into the troughs you would become almost weightless. When it started to rise on the waves your knees would buckle under you. It was AMAZING! Seasick? What is that?
You’ve just inspired me...to pack up & move further inland, perhaps Jim Thorpe, PA