"Tambor" returned to Midway on 6 October 1944, and sailed the next day for the Tokyo Bay area. On 15 October, she fired four torpedoes at three radar pips and heard one explosion. She was forced to go deep to evade 26 depth charges. She emerged with no damage. Four days later, she attacked an escort with four torpedoes and heard four explosions, but no sinking was verified. The submarine returned to Saipan from 8 to 10 November, then resumed her patrol, now one of six members of the wolfpack "Burt's Brooms" (named for Thomas B. Klakring, commanding SubDiv 101).