Type C2 ships were designed by the United States Maritime Commission in 1937–38. They were all-purpose cargo ships with five holds, and U.S. shipyards built 328 of them from 1939 to 1945. Compared to
USS Whiteside anchored in San Francisco Bay, circa 1948, a Type C2-S-B1 ship
American Forester of type C2-S-B1 (1969
USS Polaris operating off Korea, 1953, a C2
The Type R ship is a United States Maritime Administration designation for World War II refrigerated cargo ship, also called a reefer ship. The R type ship was used in World War II, Korean War, Vietna
USS Aludra (AF-55) (built as SS Matchless a type R2-S-BV1 ship) at sea, 17 September 1954
SS Adria (AF-30), a type R1-M-AV3 Adria-class ship, in 1949