Omaha-class cruiser

USS Concord in 1943
Class overview
Name	Omaha class
Operators	United States Navy  Soviet Navy
Preceded by	Chester class
Succeeded by	Brooklyn class
Built	1918–1925
In commission	1923–1949
Planned	10
Completed	10
Scrapped	10
General characteristics
Type	Light cruiser
Displacement	7,050 long tons (7,163 t) standard, 9,508 long tons (9,661 t) full
Length	550 ft (170 m) wl 555 ft 6 in (169.32 m) oa
Beam	55 ft 4 in (16.87 m)
Draft	20 ft 0 in (6.10 m)
Installed power	12 × 265 psi (1,830 kPa) Yarrow boilers 90,000 shp (67,000 kW)
Propulsion	4 × Westinghouse reduction geared steam turbines 4 × screws
Speed	35 kn (65 km/h; 40 mph)
Endurance	9,000 nmi (17,000 km; 10,000 mi) at 10 kn (19 km/h; 12 mph)
Boats & landing craft carried	2 × lifeboats
Complement	29 officers 429 enlisted (peace time)
Sensors and processing systems	SK-1 air-search radar
Armament	2 × dual 6"/53 cal guns 8 × single 6"/53 cal guns 2 × single 3"/50 cal guns 2 × triple 21" torpedo tubes 2 × dual 21" torpedo tubes 224 × mines
Armor	Belt: 3 in (76 mm) Deck: 1+1⁄2 in (38 mm) Conning Tower: 1+1⁄2 in Bulkheads: 1+1⁄2-3 in
Aircraft carried	2 × floatplanes
Aviation facilities	2 × aircraft catapults

The Omaha-class cruisers were a class of light cruisers built for the United States Navy. They were the oldest class of cruiser still in active service with the Navy at the outbreak of World War II, being an immediate post-World War I design.