of destroyers and search aircraft, but during the night of 11–12 November blew off the stern of cargo ship Venice Maru (6571 tons) east of the island of Honshū. Haddock damaged another ship on Friday 13 November, only to be prevented from finishing her off by escort craft, and she expended her last torpedo on Nichinan Maru (6503 tons) on 16 November. After a brief gunfire duel with her victim, (the merchantman sunk later that day.) the submarine headed for Pearl Harbor, arriving on 4 December. Haddock departed Pearl Harbor on 28 December on her third war patrol, this time to the oceans south of Japan. She was attacked by two destroyers raining depth charges, and when she finally surfaced to clear the area, Haddock found herself surrounded by Japanese patrol craft. The submarine sped out of the trap just in time to avoid destruction. A few days later, 17 January 1943, she sank an unidentified/uncredited freighter of 4,000 tons, and on 19 January Haddock detected six cargo vessels steaming in double column. Gaining attack position on the last ship, she scored two hits and sent her to the bottom. Aerial attack and depth charges kept her from bagging the other members of the convoy and bad weather forced Haddock to return to Midway on 17 February. Haddock cleared Midway on 11 March for her fourth war patrol, and saw her first action on 3 April off Palau, when she encountered the converted fleet oiler Arima Maru (7, 389 tons) fully loaded with 7, 880 tons of heavy oil, protected by a corvette (postwar analysis identified the escort as the destroyer .) The submarine launched one torpedo at the corvette, but the torpedo apparently ran under without exploding. Haddock then turned her attention to the tanker and succeeded in sinking her with a spread of three torpedoes. Following the torpedo tracks, the corvette dropped 24 depth charges, many directly over Haddock, causing her to lose buoyancy and she descended to 415 ft. The attack also damaged her conning tower and radar system. The following day she was ordered to terminate her patrol early due to the severity of the damage, and she returned to Pearl Harbor on 19 April 1943. Fifth, sixth, and seventh war patrols, June – November 1943 Setting out from Pearl Harbor again on 30 June, Haddock set course for the Caroline Islands on her fifth war