9 Apr 1943 Caroline Islands
  • USS Tunny made contact with a Japanese fleet off Truk, Caroline Islands at 2228 hours. She fired four torpedoes at the fleet, which now she realized was an aircraft carrier force, observing multiple hits. She then fired an additional six torpedoes before diving; the subsequent depth charge counterattack caused little damage. Later study of Japanese records revealed that the attacks caused only minor damage on the Japanese force as the torpedoes were detonated prematurely. ww2dbase [Tunny | Truk | CPC]
Germany Hawaii New Caledonia
  • USS S-31 arrived at Nouméa, New Caledonia where she would be refitted and would serve as a target for training exercises. ww2dbase [S-31 | Nouméa | CPC]
Pacific Ocean
  • Nagara and Yugure was joined by Yuzuki and Yugiri at 0440 hours, and at 0530 hours the group arrived at disabled transport ship Kosei Maru's location; the transport was torpedoed by USS Tunny two days prior. The destroyers began an anti-submarine sweep and at 0558 hours Yuzuki dropped several depth charges against a possible target. At 1308, while in two by Nagara, Kosei Maru foundered and sank; 137 survivors were taken on by Nagara. ww2dbase [Yugure | Nagara | CPC]
Poland United States
  • The keel of submarine Parche was laid down at the Portsmouth Naval Shipyard in Kittery, Maine, United States. ww2dbase [Parche | Kittery, Maine | CPC]
  • The modified P-38G aircraft which Benjamin Kelsey was test flying failed to pull out of a dive; Kelsey parachuted to safety, albeit suffering a broken ankle on landing, but the aircraft would crash near Calabasas, California, United States. ww2dbase [Benjamin Kelsey | Calabasas, California | CPC]
Photo(s) dated 9 Apr 1943
Lieutenant Walter A. Haas in the cockpit of a F2A Buffalo aircraft, Miami, Florida, United States, 9 Apr 1943US Navy ordnanceman loading .50 caliber ammunition for a F2A Buffalo fighter, Naval Air Station Miami, Florida, United States, 9 Apr 1943Photo highlighting battle damage to USS Bailey’s midships from the Battle of Komandorski Islands taken at the Mare Island Naval Shipyard, Vallejo, California, United States, 9 Apr 1943.

9 Apr 1943 Interactive Map

Timeline Section Founder: Thomas Houlihan
Contributors: Alan Chanter, C. Peter Chen, Thomas Houlihan, Hugh Martyr, David Stubblebine
Special Thanks: Rory Curtis

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"With Germany arming at breakneck speed, England lost in a pacifist dream, France corrupt and torn by dissension, America remote and indifferent... do you not tremble for your children?"

Winston Churchill, 1935

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