Today in U.S. Naval History - April 9
1861 - Second relief convoy for Fort Sumter left New York
1941 - Commissioning of USS North Carolina, which carried nine 16-inch guns
1943 - Reestablishment of Commodore rank
1959 - Selection of first 7 Mercury astronauts, include four naval aviators
For more information about naval history, visit the Naval History and Heritage Command website at history.navy.mil.