31 May 1946
- Piranha was decommissioned from service. ww2dbase [Piranha | CPC]
- Irwin was decommissioned from service. ww2dbase [Irwin | CPC]
- Chen Cheng was relieved from his position as the head of the political bureau of the Nationalist military, and was named the Commander-in-Chief of the Chinese Navy and the Chairman of the Joint Chiefs of Staff. ww2dbase [Chen Cheng | CPC]
- I-401 was scuttled by two torpedoes from submarine USS Cabezon off Oahu, US Territory of Hawaii; the torpedoes hit her at 1051 hours and she sank at 1058 hours. ww2dbase [I-401 | CPC]
- USS ABSD-1 was decommissioned from service at Leyte Gulf, Philippine Islands. ww2dbase [ABSD-1 | CPC]
- USS Menhaden was decommissioned from service at Mare Island Naval Shipyard, Vallejo, California, United States. She was placed in the US Navy Pacific Reserve Fleet. ww2dbase [Mare Island Navy Yard | Menhaden | Vallejo, California | CPC]
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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