1820 - Commodore Stephen Decatur dies after duel with Capt. James Barron.
1915 - "Naval Aviator" replaces former "Navy Air Pilot" for officers qualified as aviators.
1929 - Navy ships protect Americans and their property during Mexican revolution.
1946 - USS Missouri departs U.S. to return body of deceased Turkish ambassador to the U.S. back to Turkey for burial. Missouri arrived in Istanbul on 5 April.
1815 - USS Hornet captures HMS Penguin in battle lasting 22 minutes.
1882 - SECNAV Hunt issues General Order No. 292 creating Office of Naval Intelligence.
1917 - Launching of USS New Mexico, first dreadnought with turboelectric drive.
1945 - Carriers begin pre-assault strikes on Okinawa, kamikaze attacks follow.
1958 - First launching of simulated Polaris missile from submerged tactical launcher facility off CA.
1965 - LCDR John W. Young, USN, Pilot of Gemini 3 completed 3 orbits in 4 hours., 53 minutes at an altitude of 224 km. Recovery was by helicopters from USS Intrepid (CVS-11).
1903 - George Dewey commissioned Admiral of the Navy with the date of rank, 2 March 1899. He was the only person to hold this rank.
1813 - USS Essex takes Neryeda, first capture by U.S. Navy in Pacific.
1898 - Assist. SECNAV Theodore Roosevelt proposes Navy investigate military application of Samuel Langley's flying machine, beginning naval aviation.
1942 - ADM King becomes both Chief of Naval Operations and Commander, U.S. Fleet.
1943 - Battle of Komandorski Islands, prevents Japanese reinforcements from reaching Attu.
1966 - Operation Jackstay in Navy's first amphibious assault in Vietnam's inland waters.
1968 - Operation Bold Dragon III began in Mekong Delta.
1794 - Congress authorizes construction of 6 frigates, including Constitution.
1799 - USS Constitution recaptures American sloop Neutrality from France.
1880 - USS Constellation departs New York with food for famine victims in Ireland.
1800 - Essex becomes first U.S. Navy vessel to pass Cape of Good Hope.
1814 - HMS Phoebe and Cherub capture USS Essex off Valparaiso, Chile. Before capture, Essex had captured 24 British prizes during the War of 1812.
1848 - USS Supply reaches the Bay of Acre, anchoring under Mount Carmel near the village of Haifa, during expedition to explore the Dead Sea and the River Jordan.