小沢治三郎
On 9 December 1941, the submarine reported sighting of Royal Navy Force Z (the Royal Navy battleship , battlecruiser and supporting destroyers). The report was received by "Sendai", which relayed the message to Vice Admiral Jisaburō Ozawa aboard his flagship, the heavy cruiser . However, the reception was poor and the message took another 90 minutes to decode. Moreover, "I-65"s report was incorrect about the heading of Force Z. The following day, Force Z was overwhelmed by torpedo bombers of the 22nd Air Flotilla from Indochina.