I know a company running PSVs in the North Sea that recently built some PSVs without any Stability tanks, unheard of for this type of ship.
When they came into service they rolled on wet grass. Had to put them back in dry Dock and build big stability tanks across the back end of the accommodation.
The Naval Architect had calculated the stability with all the cargo tanks full all the time, and decided Stab tanks weren't required and he could save space and money by omitting them!!
Didn't have a clue that PSVs load cargo in Port, take it out to the platforms, discharge it and come back empty, but what can you expect of a Naval Architect?
It is always better to ask a stupid question than to do a stupid thing.