The USS Omaha (CL-4) was the leading vessel of the Omaha-class light cruisers in the United States Navy, constructed by the Todd Dry Dock and Construction Company in Tacoma, Washington. Her keel was laid on 6 December 1918, and she was launched on 14 December 1920, sponsored by Louise Bushnell White. Omaha was commissioned on 24 February 1923, under the command of Captain David C. Hanrahan. Physically, the ship measured 555 feet 6 inches overall in length, with a waterline length of 550 feet. She had a beam of 55 feet 4 inches and a mean draft of 14 feet 3 inches. Her standard displacement was approximately 7,050 long tons, increasing to about 9,508 long tons at full load. Powered by four Westinghouse geared steam turbines and 12 Yarrow boilers, Omaha could reach speeds up to 35 knots, although her effective range was limited to about 8,460 nautical miles at 10 knots. Omaha’s armament evolved over her service. Originally designed to mount ten 6-inch/53 caliber guns, her main battery was later arranged with four twin turrets fore and aft, supplemented by eight casemate-mounted guns, and various secondary weapons including two 3-inch anti-aircraft guns, torpedo tubes, and capacity for 224 mines. Her armor lacked a full-length waterline belt, but protected her boiler, engine rooms, steering gear, and conning tower with varying thicknesses of armor, though her gun turrets were unarmored. She carried two floatplanes, initially Vought VE-9s and UO-1s, later operating Curtiss SOC Seagulls and Vought OS2U Kingfishers. Throughout her career, Omaha participated extensively in peacetime training, cruises across the Pacific, Mediterranean, and Caribbean, and served as a flagship for various operations. During World War II, Omaha engaged in neutrality patrols, convoy escort duties, and notable combat operations, including sinking German blockade runners SS Odenwald and Rio Grande, and supporting the Allied invasion of southern France. She also captured the German merchant raider Odenwald in 1941 and was involved in numerous rescue missions of Allied and merchant ship survivors. Her service record reflects her importance in maritime patrol, escort, and combat roles during her nearly two decades of active service before being scrapped in February 1946.

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