Why did the Royal Navy misuse fleet carriers against U-boats early in World War II?
Short answerIt knew the risk but needed organic air power and had almost no suitable non-fleet carriers available.
NotesExercises had already shown the Royal Navy how vulnerable carriers were to submarines, so this was not simple doctrinal ignorance. Submarine-hunting groups still needed organic air power to search and protect the force. Britain used fleet carriers because those were the aviation ships available, while Argus was the limited non-fleet alternative and was itself repeatedly considered for retirement. The episode demonstrates how an understood tactical risk can persist when force structure leaves no suitable platform for an essential mission.