The closing answer warns against defining a corvette by tonnage alone. Allied corvettes, frigates, and sloops were related anti-submarine escorts, usually without torpedoes and not necessarily designed for high speed. Sloops used full naval construction standards, while corvettes leaned toward merchant practice that supported rapid, economical production. Frigates occupied the middle ground, making construction method and intended escort role more useful distinctions than one displacement cutoff.
Notable Point · 5:17:51-5:18:39
Construction standards separated corvettes, frigates, and sloops
Second World War escort labels reflected role and construction: merchant-style corvettes, full naval sloops, and frigates between them.