Did HMS Warspite's helicopter-assisted submarine kill make her the largest ASW frigate ever deployed?
Short answerNo. The helicopter contributed to an anti-submarine result, but Warspite lacked the organic sonar and weapons that define an ASW frigate.
NotesHMS Warspite's helicopter-assisted submarine kill did not make the battleship the largest anti-submarine frigate. That classification fails because Warspite was not using the sonar, torpedoes, or other organic systems expected of an ASW escort. A helicopter can support many classes of warship without changing their fundamental design role. The exchange distinguishes an operational result from the capabilities built into the ship that achieved it.