Subwoofer and aero port on opposite sides? Will this work?

[cal2vin]

I am building two of these enclosures for a boat.  They will be inside an observers compartment.  When stopped we will have the seat opened up.  My question is will it cause any issues with cancellation or port noise or decreased volume to put that port on the opposite wall of the box.  I need to shrink the 20 inch sides down to about 18.5 inches and the 4 inch aero is actually almost touching the subwoofer in my current box with this design.  It would be much easier to make them fit if the ports were on the back wall. Any thoughts?  Subwoofer is a Wetsounds REVO-XXX 12 inch.

[YukonXL04]

Being in a boat, you might be better off aiming the sub and port against the hull of the boat. Alot of people have had success with it. If you have a sub there now, I would try moving it around facing different directions inside the compartment first. Then build your new box to suit

[cal2vin]

Hmm ok. The amp rack is actually attached on the hull side of the compartment but that may not make much differences. I’ll give it a shot with the current box I️ have and see how well that works.