USS Portland was laid down at the Bethlehem Yard in Quincy, Massachusetts on February 17, 1930, launched on May 21, 1932 , and commissioned on February 23, 1933. Portland was 610-feet 4-inches (185.9m) overall 592-feet at waterline, with a beam of 66-feet 1-inch (20.1m) and draught of 6.4m. Displacement was 10,258-tons standard 12,755-tons full load, over 1,200-tons heavier than the Northamptons. Armament was nine 8-inch/55 guns, eight 5-inch/25 dual purpose guns, and eight 0.50 water cooled machine guns. The armor scheme had a maximum belt of 5-inches, 2.5-inches on the turrets, 1.25-inches on the conning tower and a total of 2.5-inches deck armor. The power plant produced 107,000 horsepower for a maximum speed of 32.5-knots. Endurance was 10,000 nm at 15-knots, which by 1945 was 8,640 nm at 15-knots, 6,360 nm at 20-knots. Complement in 1935 was 46 officers and 906 crewmen but increased hugely as World War Two progressed with increased AA armament to 100 officers and 1,282 crewmen.
In May 1942 the Portland had augmented her anti-aircraft gun armament with the addition of four quadruple 1.1-inch (28mm) mounts known as Chicago Pianos, as well as twelve 20mm Oerlikons. She was equipped with SC and SG radars. The gun directors fitted were two Mk 27/2 Mk 3, two Mk 33/Mk 4, and several Mk 44 mounts. The year 1942 proved momentous for Portland. In May 1942 she took part in the Battle of the Coral Sea and picked up 722 survivors of USS Lexington CV-2. In June 1942 Portland was part of TF 17 at the Battle of Midway. August 7 through 9 saw support of landings at Guadalcanal and Tulagi and then the Battle of the Eastern Solomons during August 23 to 25. On October 26, 1942 she was escorting USS Enterprise CV-6 during the Battle of Santa Cruz. The apex of he action came at the Naval Battle of Guadalcanal on November 12, 1942 when she became involved in a grenade fight in a phone booth, taking on the battleship Hiei at close range and being crippled by a torpedo before sinking a destroyer. She made Tulagi on November 14 for temporary repairs and then was towed to Sydney for more repairs, before being routed through Samoa and Pearl Harbor to Mare Island, California for final repairs and a refit completed on March 3, 1943. (History from: Blazing Star, Setting Sun, The Guadalcanal-Solomons Campaign November 1942 - March 1943 by Jeffrey R. Cox, Osprey Publishing 2020; Cruisers of the US Navy 1922-1962 by Stefan Terzibaschitsch, Naval Institute Press 1984; U.S. Cruisers by Norman Friedman, Naval Institute Press 1984)
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