High Quality Content by WIKIPEDIA articles! USS Mount Vernon (LSD-39) USS Mount Vernon (LSD-39) was an Anchorage-class dock landing ship of the United States Navy. She was the fifth ship of the U.S. Navy to bear the name. She was built in Massachusetts in 1972 and homeported in Southern California for 31 years until being decommissioned on 25 July 2003. Mount Vernon acted as the control ship for the cleanup of the Exxon Valdez oil spill. In 2005, she was intentionally destroyed off the coast of Hawaii as part of a training exercise.