supply run to Kiska, where she unloaded her cargo on 1 May 1943. She returned to Paramushiro on 5 May 1943. The Battle of Attu began when U.S forces landed on Attu on 11 May 1943, and I-35 got underway for the Attu area. On 13 May 1943, the destroyer , screening the battleship off Attu, detected a stationary submarine on sonar. As Phelps was about to attack, the submarine suddenly changed speed and bearing, apparently attempting evasive maneuvers. Phelps dropped two depth charges, then lost contact. She regained contact at 15:30 and dropped five and four depth charges. Nearby, the light minelayer signaled confirmation that Phelps had hit the submarine and reported that a metal drum and a small diesel oil slick had come to the surface. The identity of the submarine Phelps attacked is unknown, but it probably was either I-34 or I-35, both of which were in the area at the time. A depth charge presumably had knocked the metal drum off the submarine's deck, but no Japanese submarine was sunk in the action. In foggy conditions on the morning of 15 May 1943, I-35 sighted Pennsylvania standing by as the attack transport unloaded off Holtz Bay on Attu. I-35 fired torpedoes at what she identified as a light cruiser and heard two explosions. At 11:40, four torpedoes passed astern of Pennsylvania and on either side of J. Franklin Bell. Two destroyers counterattacked, dropping 58 depth charges and inflicting serious damage on I-35. I-35 called at Paramushiro from 19 to 27 May 1943, then proceeded to Kure, which she reached at 17:00 on 2 June 1943. She later moved to Kobe where repairs to her damage began on 17 June 1943. Later operations With her repairs complete, I-35 departed Kure in mid-September 1943 and arrived at Truk on 18 September. On 11 October 1943, she set out from Truk on a war patrol in the area of Wake Island and Hawaii, and while at sea on 16 October 1943 was reassigned to Submarine Group A. At 00:32 on 17 October 1943, the submarine , which was en route Pearl Harbor, Hawaii, after conducting a reconnaissance of Makin Island in the Gilbert Islands, sighted the conning tower of a submarine that looked to her commanding officer like that of a new-construction U.S. submarine, but he later received information that he had seen a Japanese submarine, which may have