The C1-M-AV1 subtype, a general cargo ship with one large diesel engine, was the most numerous. About 215 of this type were built in ten different shipyards. Consolidated Steel Corp., Ltd. of Wilmington, California built the largest number – about a quarter of all built. These ships were either named for knots, such as , or with a two-word name beginning with "Coastal", such as ; a large number built for lend-lease were also given two-word names, this time beginning with "Hickory". About 65 of this subtype were complete for the U.S. Navy, like the USS "Gadsden" built by Walter Butler Shipyard. Those ships were generally named after counties in the U.S.