USS Charger (CVE-30) was an escort carrier of the United States Navy during World War II converted from a commercial C3-P&C cargo/passenger liner hull built as Rio de la Plata intended for the Moore-McCormack company's American Republics Line serving the east coast of South America. The ship was requisitioned for conversion to an escort carrier type intended for Royal Navy use and initially commissioned as HMS Charger (D27). Days later the transfer was rescinded with the ship returning to U.S. Navy control to become USS Charger which operated throughout the war as a training ship on the Chesapeake Bay with two ferry missions to Bermuda and Guantánamo Bay, Cuba.