USS Helena

Sunk

Type	Light cruiser
Class	St. Louis
War	Second World War
Main guns	15 × 6″ guns

Damaged at Pearl Harbor. Her new search radar found the Japanese first at Cape Esperance and on 13 November 1942. Sunk at Kula Gulf in July 1943.

The United States cruiser USS Helena (CL-50), c. 1940. Courtesy of the U.S. Naval Institute Photograph Collection, Annapolis, Maryland. U.S. Naval History and Heritage Command Photograph. Photo: Unidentified USN photographer, Public domain · Wikimedia Commons

Armament and specifications

Armament

15 × 6 in (152 mm)/47 caliber Mark 16 guns
8 × 5 in (127 mm)/38 caliber dual-purpose guns
8 × caliber 0.50 in (12.7 mm) machine guns

Armour

Belt: 3+1⁄4–5 in (83–127 mm)
Deck: 2 in (51 mm)
Barbettes: 6 in (150 mm)
Turrets: 1+1⁄4–6 in (32–152 mm)
Conning Tower: 2+1⁄4–5 in (57–127 mm)

Builder	New York Naval Shipyard, Brooklyn, New York
Laid down	9 December 1936
Launched	27 August 1938
Commissioned	18 September 1939
Displacement	Standard: 10,000 long tons (10,160 t) Full load: 13,327 long tons (13,541 t)
Length	608 ft 8 in (185.52 m)
Speed	32.5 kn (60.2 km/h; 37.4 mph)
Complement	888 officers and enlisted men

As built, from the ship's Wikipedia article. Figures there may cover later refits too.

Career

Launched

27 August 1938

Attack on Pearl Harbor

Damaged

7 December 1941

Torpedoed

Battle of Cape Esperance

Survived

11–12 October 1942

Found the Japanese by radar

Naval Battle of Guadalcanal: first night

Survived

13 November 1942

Fate

Sunk

Sunk, Battle of Kula Gulf, 6 July 1943