Bogue and Ruler from C3 hulls

The Bogue and Ruler classes grew from several industrial pathways. Long Island-style conversions began with existing ships, while the Type C3 hulls used for Bogue-class vessels could be finished, nearly finished, or built from the keel up as escort carriers. A completed hull had not necessarily entered merchant service, so its conversion did not remove an operating ship from trade. Twenty-three were built as carriers from the keel up, a distinction connected here to the Bogue, Ruler, and Ameer names. Merchant standardization let shipyards apply naval requirements to a repeated cargo design.