destroyers attacked her some north of Cape Wrangell, subjecting her to depth-charge attacks during a two-and-a-half-hour encounter. She departed her patrol area on 10 September 1942 and headed for Dutch Harbor. Fifth war patrol On 24 September 1942, S-30 got underway for her fifth war patrol, her second in the Aleutians. A cracked cylinder in her port engine forced her back to Dutch Harbor on 27 September, but on 30 September, she again headed west. On 3 October 1942, she entered her patrol area and began hunting Japanese ships along the sea lanes west of Kiska, but by 9 October 1942 additional engineering casualties, cracks, and leaks had developed and forced her to return to Dutch Harbor. October 1942–March 1943 After arriving at Dutch Harbor, S-30 received orders to proceed to San Diego for an overhaul. During the overhaull, she received a fathometer, a new distilling unit, and more modern radar equipment. After the completion of her overhaul, she provided training services to the West Coast Sound School from mid-February 1943 into March 1943. On 16 March 1943, she departed for Dutch Harbor, which she reached on 21 March 1943. After her arrival, an air compressor failure and malfunctioning of her fathometer delayed her departure on her next war patrol. Sixth war patrol With repairs complete, S-30 began her sixth war patrol on 13 April 1943, departing Dutch Harbor for a patrol area off Attu. On 15 April 1943, she crossed the International Date Line and she arrived in her patrol area on 17 April 1943 Dutch Harbor time (18 April local time). For the next few days, she reconnoitered and, when possible photographed, Attu's principal coves, bays, and harbors. On 26 April 1943, she was ordered to operate east of 176°E and south of 52°40'N, where she remained until after an Allied strike against Attu. On the afternoon of 27 April 1943, she returned the waters off Attu but was unable to determine the extent of damage the strike inflicted on Japanese forces anf facilities. On 2 May 1943, she departed the Attu area and returned to Dutch Harbor for refit. Seventh war patrol On 24 May 1943, S-30 departed Dutch Harbor to begin her seventh war patrol and headed west again, this time bound for the northern Kuril Islands. On 31 May 1943 (Dutch Harbor date; 1 June 1943 locally), she entered her assigned patrol area. On 5