At 2235, "Helena"s radar spotted the Japanese fleet, and the Americans successfully crossed the Japanese "T". Both fleets opened fire, but Admiral Goto, thinking that he was under friendly-fire, ordered a 180-degree turn that exposed each of his ships to the American broadsides. "Furutaka" was sunk. "Aoba" was hit by up to forty 6-inch and 8-inch shells. The bridge was wrecked, the No. 2 turret was knocked out and the No. 3 turret destroyed. Other hits put four of the "Aoba"’s boilers off line. Admiral Goto was mortally wounded and 80 other crewmen were killed. After temporary repairs at Shortland, "Aoba" limped back to Truk on 15 October, where Admiral Isoroku Yamamoto personally inspected the damage and ordered the ship back to Japan.