The USS Portland (CA-33) was a prominent heavy cruiser and the lead ship of her class, constructed as part of the U.S. Navy’s post-Washington Naval Treaty efforts. Launched in 1932 and commissioned in 1933, Portland measured approximately 581 feet in length, with a beam of around 61 feet and a draft of 21 feet. Her standard displacement was about 10,258 long tons, increasing to over 12,700 long tons at full load, though she actually displaced approximately 9,800 long tons upon completion. Portland was powered by four Parsons geared turbines, driving four propellers, and fueled by eight Yarrow boilers, generating 107,000 shaft horsepower. This propulsion allowed her to reach speeds slightly exceeding 32 knots, with a range of roughly 10,000 nautical miles at 15 knots. Her design incorporated a main armament of nine 8-inch/55 caliber guns arranged in three triple mounts, complemented by anti-aircraft weaponry including eight 5-inch guns, later upgraded with 24 Bofors 40 mm guns and numerous Oerlikon 20 mm cannons. Her armor featured a belt up to 5 inches thick, with additional protection around vital areas like magazines and gun positions. Constructed at Bethlehem Steel’s Quincy Shipyard, Portland served extensively during World War II, participating in key battles such as the Coral Sea, Midway, Guadalcanal, Leyte Gulf, and Okinawa. She was heavily involved in screening aircraft carriers, engaging Japanese ships, and shore bombardments. Notably, she was torpedoed at Guadalcanal but returned to action after repairs. Portland earned 16 battle stars, making her one of the most decorated ships of the war. Her service included accepting Japanese surrender in the Caroline Islands and participating in Operation Magic Carpet to repatriate U.S. troops. Decommissioned in 1946 and scrapped by 1962, Portland’s legacy endures through her distinguished combat record and her preserved tripod mast at Fort Allen Park, Portland.

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