The USS Narwhal (SS-167) was the lead vessel of her class of submarine and a notable "V-boat" in the United States Navy, named after the narwhal. Laid down on 10 May 1927 at the Portsmouth Navy Yard in Kittery, Maine, she was launched on 17 December 1929 and commissioned on 15 May 1930 under Lieutenant Commander John H. Brown Jr. Her construction featured a partial welded and riveted hull, with welded keel plates and non-critical joins, while the main hull remained riveted. She was generally similar to her sister V-boats but was slightly smaller and lacked a minelaying system. Her design emphasized long-range capabilities, influenced by strategic considerations of anticipated conflicts in the western Pacific, including potential war with Japan. Initially equipped with MAN-designed diesel engines, these proved unreliable, leading to an engine replacement in 1942 with General Motors Winton engines, along with other machinery upgrades, including additional external torpedo tubes. In her early service, Narwhal conducted cruises along the West Indies, the West Coast, and in training waters around New England and Hawaii. She was present during the attack on Pearl Harbor, quickly engaging in combat operations. During World War II, she undertook 15 war patrols, operating across the Pacific, including reconnaissance missions near Wake Island, the Kurile Islands, the Marshall Islands, and the Philippines. Notable actions include damaging enemy ships like Maju Maru and Taki Maru, sinking Hokusho Maru, and supporting the Philippine guerrilla movement with secret transport missions. Her service earned her 15 battle stars, tying her with USS Thresher as one of the most decorated US submarines of WWII. She also played a role in evacuations and covert operations, including delivering supplies and personnel to guerrillas and evacuees from enemy-occupied territories. Decommissioned on 23 April 1945 and sold for scrap in 1946, her legacy includes her guns displayed at Groton, Connecticut, and a memorial in Nasipit, Philippines, commemorating her wartime efforts.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.