What prompted the US Navy to need the Oliver Hazard Perry class to begin with?
Short answerNumbers: the Cold War Navy needed ships and hulls in the water during the Reagan-era buildup and related force expansion.
NotesThe Perry class existed because the Navy needed numbers during the Cold War buildup. It supplied hulls for convoy, amphibious-group, logistics, ASW, and carrier-support tasks. Basic frigates could cover those supporting missions while high-end destroyers handled more demanding work. The same logic informs the later debate over whether a modernized or continuing Perry family could have covered a persistent small-combatant gap.