How today's ship categories might migrate as warships grow

If ship types keep growing, what might navies eventually call the vessels that now serve as frigates and corvettes?

The OPV label might move upward, older terms such as sloop could return, or navies could adopt another acronym-based category.

Today's offshore patrol vessel could move upward into work now associated with corvettes or frigates. Older terms such as sloop or even brig might return if navies wanted historically familiar labels. Acronym-based categories such as OPV, LPH, and LPD offer another route. Ship names follow institutional fashion as well as displacement and armament.