@Steven-Kaufman
I would recommend this article
https://bluewatermiles.com/extras/waves/
However, it refers to single hull boats. I have no experience with catamarans, just knowing that they have different behavior and limits at sea.
With all types of boats, cross seas (wind seas opposite or at 90° to the swell, same for main swell and cross secondary swell if they have almost similar heights and especially wind/waves opposing the current/tidal current) makes them uncomfortable or even unsafe if conditions become tougher.
Windy provides all these parameters allowing you to analyze the conditions of your future navigations.