OPV lineage and the difference from corvettes

Do offshore patrol vessels descend from sloops, and are OPVs simply modern corvettes?

OPVs continue the patrol role once filled by sloops but remain distinct from corvettes, which are small warships rather than primarily patrol vessels.

Historical sloops served as patrol vessels and therefore provide a useful ancestor for the modern offshore patrol vessel. That lineage differs from the corvette, whose defining place is at the small end of the warship spectrum rather than in a patrol mission alone.