All very well having sealed compartments, but I like to have limber holes down to the bilge
I had that discussion with offshore after looking at the boats they finished, that seemed to have voids around tanks etc, their answer was that water should never get in so why worry about how it gets out.
I still gave Alfresco lots of limber holes, so any water finishes up in the bilge or central lockers.
Three main bilges all have their own pumps (hand and elec) so that water can be removed.
No doubt your yard are looking at how to do that for you Nige