page_title: USS Wahoo (SS-238)
section_title: Seventh patrol and loss, September–October 1943
hierarchical_section_title: USS Wahoo (SS-238) / Seventh patrol and loss, September–October 1943
caption_attribution_description: USS Wahoo (SS 238) from US government source, public domain image
context_page_description: USS Wahoo (SS-238) was a Gato-class submarine, the first United States Navy ship to be named for the wahoo. Construction started before the U.S. entered World War II, and she was commissioned after entry. Wahoo was assigned to the Pacific theatre. She gained fame as an aggressive and highly successful submarine after Lieutenant Commander Dudley Walker "Mush" Morton became her skipper. She was sunk by Japanese aircraft in October 1943 while returning home from a patrol in the Sea of Japan.
context_section_description: Morton, smarting from that last luckless patrol, asked to return to the Sea of Japan, and permission was granted. He elected to take a full load of the newly arrived Mark 18 electric torpedo rather than take the risk that further production runs of the Mark 14 steam torpedoes might still be defective. Wahoo got underway from Pearl Harbor, topped off fuel and supplies at Midway on 13 September, and headed for La Perouse Strait. The plan was to enter the Sea of Japan first, on or about 20 September, with Sawfish following by a few days. At sunset on 21 October, Wahoo was supposed to leave her assigned area, south of the 43rd parallel, and head for home. She was instructed to report by radio after she passed through the Kurils. Nothing further was ever heard from Wahoo.
  On 25 September 1943 the Taiko Maru was torpedoed in the Sea of Japan; mistakenly credited to the USS Pompano (SS-181), it was apparently sunk by Wahoo.
  On 5 October, the Japanese news agency Domei announced to the world that a steamer, the 8,000 long tons (8,100 t) Konron Maru, was sunk by an American submarine off the west coast of Honshū near Tsushima Strait, with the loss of 544 lives. The victims included two Japanese congressmen of House of Representatives, Choichi Kato and Keishiro Sukekawa. Postwar reckoning by JANAC showed Wahoo sank three other ships for 5,300 tons, making a patrol total of four ships of about 13,000 long tons. The sinking of Konron Maru enraged the Japanese navy, and the Maizuru Naval District ordered a 'search and destroy' operation for US submarines.
  Japanese records also reported that on 11 October, the date Wahoo was due to exit through La Pérouse Strait in the morning, Wahoo was bombarded from Cape Sōya. An antisubmarine aircraft (accurately Jake) sighted a wake and an apparent oil slick from a submerged submarine. The Japanese initiated a combined air and sea attack with numerous bombs and depth charges throughout the day. Sawfish had been depth-charged by a patrol boat while transiting the strait two days before, and the enemy's antisubmarine forces were on the alert; their attacks fatally holed Wahoo, and she sank with all hands. She was declared overdue on 2 December 1943 and stricken from the Naval Vessel Register on 6 December 1943.
  After the loss of Wahoo, no US submarines ventured into the Sea of Japan until June 1945, when special mine-detecting equipment became available.
  Wahoo earned six battle stars for World War II service.
caption: Wahoo
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