What was the US Navy's anti-submarine equivalent to the Black Swan class?
Short answerThere was no close specialist equivalent; the US Navy relied heavily on its large general-purpose Fletcher force.
NotesThere was no close American counterpart to the particular specialist ASW role assigned to Black Swan sloops. The US Navy instead had large numbers of Fletcher-class destroyers available for varied duties. Production scale therefore shaped its answer to requirements that Britain met with a dedicated design. The comparison also depends on the different submarine threats faced by the two navies.