April 5
1946 - USS Missouri arrives in Turkey to return the body of Turkish ambassador to the U.S. and to show U.S. support and willingness to defend Turkey.
April 6
1776 - Sloop-of-war Ranger, frigate Queen of France and frigate Warren capture British Hibernia and 7 other vessels
1862 - Naval Gunfire from Tyler and Lexington help save Union Troops at Battle of Shiloh
1909 - Commander Robert E. Peary reports reaching the North Pole
1917 - U.S. declares war on Germany
1945 - First heavy kamikaze attack on ships at Okinawa.
1961 - USS Lake Champlain brings oxygen to aid stricken passenger of British liner Queen of Bermuda.
1968 - USS New Jersey recommissioned for shore bombardment duty in Vietnam
1989 - President orders DOD to assist in Exxon Valdez oil spill cleanup
1993 - Branch Navy Hospital Adak responds to crash of civilian Chinese airline providing lifesaving treatment and medical evacuation of 89 injured passengers. Only one passenger out of 265 passengers died.
April 7
1776 - Continental brig Lexington captures British Edward
1917 - Navy takes control of all wireless radio stations in the U.S.
1942 - Navy accepts African Americans for general service
1945 - First two Navy flight nurses land on an active battlefield (Iwo Jima): ENS Jane Kendeigh, USNR, and LTJG Ann Purvis, USN
1945 - Carrier aircraft defeat last Japanese Navy sortie (Battle of East China Sea); Yamato, world's largest battleship, and five other ships sunk
1979 - Launching of first Trident submarine, USS Ohio (SSBN-726) at Groton, CT
April 8
1925 - First planned night landings on a carrier, USS Langley, by VF-1
1950 - Unarmed Navy patrol aircraft shot down over Baltic Sea by USSR
1951 - 1st of 4 detonations, Operation Greenhouse nuclear test
April 9
1861 - Second relief convoy for Fort Sumter left New York
1941 - Commissioning of USS North Carolina, which carried 9 16-inch guns
1943 - Re-establishment of Commodore rank
1959 - Selection of first 7 Mercury astronauts, include 4 naval aviators
April 10
1941 - USS Niblack, while rescuing survivors of torpedoed ship, depth charged German submarine; first action of WW II between U.S. and German navies
1963 - During diving tests, USS Thresher lost with all hands (112 crew and 12 civilians) east of Cape Cod, MA
1966 - River Patrol Boats of River Patrol Force commenced operations on inland waters of South Vietnam
April 11
1783 - Congress declares end of war with Great Britain
1900 - Navy accepted its first submarine, USS Holland
1970 - Launch of Apollo 13, commanded by CAPT James A. Lovell, Jr., USN. Former naval aviator Fred W. Haise, Jr. was the Lunar Module Pilot. While 200,000 miles from Earth there was an explosion on board which forced Apollo 13 to circle the moon without landing. Mission duration was 5 days, 22 hours, and 54 minutes. Recovery was by HS-4 helicopters from USS Iwo Jima (LPH-2).