June 4, 1946
Day by day chronology

TUESDAY, 4 JUNE 1946

U.S. Navy: I-400 Japanese Submarine is scuttled by torpedo fired by USS Trumpetfish (SS-425) on during a tests of the Mark 10-3 exploder. After being hit by three Mark 18-2 electric torpedoes, the sub sank by the stern at 12:10pm in deep water off Barber's Point on southwestern Oahu.