31 March 1945:
Off Kerama Retto, Okinawa. That night, Cdr W. R. Glennon's USS STOCKTON (DD-646) is screening a task group. STOCKTON is assisted in the ASW effort by Martin PBM "Mariner" seaplanes from tender USS CHANDELEUR (AV-10).
STOCKTON picks up a surface radar contact. She engages the contact - a surfaced submarine - that crash-dives. The destroyer soon makes a sound contact and then attacks with a salvo of depth charges. In seven attacks over the next four hours, Cdr Glennon expends all of his depth charges.
Cdr J. R. Hansen's MORRISON (DD-560) arrives just as I-8 surfaces, but she submerges immediately. MORRISON drops a pattern of eleven charges that forces LtCdr Shinohara to battle surface only 900 yards from the destroyer. He engages MORRISON with his deck guns. After a 30-minute fight, MORRISON's main armament of five 5-inch quick firing guns shatter and sink I-8. She capsizes and goes down by the stern at 25-29N, 128-35E. A small boat from MORRISON rescues an unconscious survivor, PO2C Mukai Takamasa, one of I-8's gun crew.