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United States' Pensacola Class Cruisers

Photos

CA-24 USS Pensacola in the 1930s:
CA-24 USS Pensacola in the 1930s
US Navy Photo, NH-662
CA-24 USS Pensacola at Mare Island Navy Yard on June 29, 1945:
CA-24 USS Pensacola at Mare Island Navy Yard on June 29, 1945
US Navy Photo, 19-N-87787
CA-25 USS Salt Lake City firing her guns in February 1942:
CA-25 USS Salt Lake City firing her guns in February 1942
US Navy Photo, NH-50946
CA-25 Salt Lake City at Mare Island Navy Yard on May 10, 1943:
CA-25 Salt Lake City at Mare Island Navy Yard on May 10, 1943
US Navy Photo, 19-N-47574

Design

The Pensacola class were the first cruisers designed within the restrictions of the 1922 Washington Naval Treaty.1,2,3 The design was finalized in March 1925.1

Aircraft

There were two catapults to launch the aircraft.1,2 No hanger was built.1

The Vought O3U Corsair was the first aircraft used.1

Armament

Due to the hull lines the 8" triple turrets were placed above the twin turrets.1

  Shell Weight Range Elevation
8" L/551,4 260 lb1 31,860 yards1 41°1 , 45°4

Engines

There were four boiler rooms.1

Ships

CA-24 USS Pensacola

  • Manufacturer: New York Navy Yard1,2,3,4
  • October 19263,4, October 27, 1926: Laid down.1,3,4
  • April 25, 1929: Launched.1,2,3,4
  • February 6, 1930: Completed.1,3,4
  • 1930 - 1935: Member of Cruiser Division 4.1
  • Mid 1930s, before World War II3: Torpedo tubes removed.1,3
  • 1941: Tripod mainmast cut down.2
  • November 1941: Two 1.1" quad mounts added.1
  • December 1941: Flagship of Scouting Force, Cruiser Division 5.1
  • 1942: Eight 20 mm guns and two 1.1" quad mounts added.1
  • 1942 - 1945: Pacific raids.2
  • January 1942: Attack on Wake Island with USS Lexington was cancelled after oiler was sunk.1
  • March 1942: Supported carrier raid on Jalamava and Lae with Task Force 11 (TF11) and Task Force 17 (TF17).1
  • April 21, 1942: Pearl Harbor.1
  • June 1942: Battle of Midway.1,2 Member of Task Force 16 (TF16).1
  • June 1942: Member of Task Force 17 (TF17).1
  • September 1942: Guadalcanal.1,2
  • October 26, 1942: Battle of Santa Cruz.1,2
  • November 30 - December 1, 1942: Battle of Tassafaronga.1,2 Member of Task Force 67 (TF67).1 Hit by torpedo causing heavy casualties.1,2 Temporary repairs at Tulagi.1 Repairs at Espiritu Santo.1
  • 1943: Four 40 mm Bofors quad mounts replaced the 1.1" quad mounts.1
  • January 7, 1943: Pearl Harbor.1
  • January 27 - November 1943: Repairs at Pearl Harbor.1
  • November 1943: Supported Tarawa invasion.1
  • November 1943: Marshall Islands.1 Gilbert Islands.2
  • 1944: Six 40 mm Bofors quad mounts and 20-21 20 mm guns in total.1
  • April 1944: Refit at Mare Island Navy Yard.1
  • August 13, 1944: Pearl Harbor.1
  • November 1944: Bombardment of Iwo Jima.1
  • Summer 1945: Refit.1 Seven 40 mm Bofors quad mounts and nine 20 mm twin mounts in total.1
  • February 1945: Iwo Jima.2
  • February 17, 1945: Hit six times by Japanese artillery while bombarding Iwo Jima.1 Heavy casualties.1
  • April 1945: Okinawa.2
  • April 15 - August 3, 1945: Refit at Mare Island.1
  • August 1945: Aleutians.1
  • September 1945: Occupation duties.1

CA-25 USS Salt Lake City

  • Manufacturer: New York Shipbuidling1,2,3,4
  • June 19273,4, June 9, 1927: Laid down.1,3,4
  • January 23, 1929: Launched.1,2,3,4
  • December 11, 1929: Completed.1,3,4
  • December 1929 - September 12, 1930: Member of Cruiser Division 2.1
  • September 1930: Member of Cruiser Division 5.1
  • 1931 - 1933: Member of Cruiser Division 4, Pacific Fleet.1
  • Mid 1930s, before World War II3: Torpedo tubes removed.1,3
  • 1941: Tripod mainmast cut down.2
  • November 1941: Two 1.1" quad mounts added.1
  • December 1941: Member of Task Force 8 (TF8) in support of Wake Island.1
  • 1942: Eight 20 mm guns and two 1.1" quad mounts added.1
  • 1942 - 1945: Pacific raids.2
  • January - February 1942: Bombarded Japanese positions in the Marshall Islands and the Gilbert Islands.1
  • February - March 1942: Carrier raids on Wake Island.1
  • April 1942: Doolittle Raid.1
  • June 1942: Member of Task Force 17 (TF17).1 Pearl Harbor.1
  • July 1942: Guadalcanal.1,2 Tulagi.2
  • August 1942: Battle of Eastern Solomons Islands.1 Member of Task Force 61 (TF61).1
  • October 1942: Battle of Cape Esperance.1,2 Slightly damaged by three hits.1,2
  • November 1942 - March 1943: Refit at Pearl Harbor.1
  • 1943: Four 40 mm Bofors quad mounts replaced the 1.1" quad mounts.1
  • March 26, 1943: Battle of Komandorski Islands.1,2 Heavily damaged.1,2 Repairs at Mare Island Navy Yard.1
  • October 14, 1943: Pearl Harbor.1
  • November 1943: Gilbert Islands.2
  • 1944: Six 40 mm Bofors quad mounts and 20-21 20 mm guns in total.1
  • January 1944: Marshall Islands.1 Member of Task Group 50.15 (TG50.15).1
  • March - April 1944: Western Carolinas.1
  • April 30, 1944: Pearl Harbor.1
  • October 1944: Leyte.1,2
  • 1945: Six 40 mm Bofors quad mounts and 19 20 mm guns in total.1
  • February 1945: Iwo Jima.1,2
  • April 1945: Okinawa.1,2
  • August 1945: Aleutians.1
  • September 1945: Occupation of Honshu.1

Specifications

  Pensacola class
Crew 6311,3, 7004, 1,2002
Displacement 9,097 tons1,3, 9,100 tons2,4
Displacement - Loaded 11,512 tons1,3
Physical Characteristics  
Length 585' 6"4, 585' 8"1,3, 585' 9"2
178.51 m1,3
Length - Waterline 558'4, 570'1,2,3
173.74 m1,3
Length - Between Perpendiculars  
Beam 65' 3"1,2,3,4
19.89 m1,3
Draft / Height 16' 2"4, 16' 3"2, 19' 6"1,3
5.93 m1, 5.94 m3
Performance  
Speed 32.5 knots1,3, 32.7 knots2,4
Range at 15 knots 10,000 nautical miles1,3, 15,000 nautical miles4
Armament 8" triple turrets2,4, 8" L/55 triple turrets1,3: 21,2,3,4
8" triple turrets2,4, 8" L/55 twin turrets1,3: 21,2,3,4
Anti-Aircraft 5"2, 5" L/253,4, 5" L/25 DP1: 41,3, 82,4
Aircraft 22, 41,3,4
Torpedo Tubes 21"1,3: 2 mounts 3 tubes each1,3
Armor  
Barbettes 0.75"3
Belt - Machinery 2.5"3
Belt - Magazines 4"1,3
Belt - Main 2.5"1, 3"4
Deck 1"1,3, 1" + 2"4
Deck - Magazines 1.75"3
Turrets 1.5"4
Turrets - Front 2.5"3
Turrets - Rear 0.75"3
Turrets - Side 0.75"3
Turrets - Top 2"3
Engines  
Boilers White-Forster: 81,3,4
Shafts 41,2,3,4
Turbines Geared2, Parsons geared1,3,4
HP 107,0001,2,3,4
Oil 1,411 tons - 2,116 tons3, 1,500 tons4, 2,116 tons1

Sources:

  1. Cruisers of World War Two An International Encyclopedia, M. J. Whitley, 1995
  2. US Warships of World War 2, Paul H. Silverstone, 1965
  3. Conway's All the World's Fighting Ships 1922-1946, Robert Gardiner, 1987
  4. Janes' Fighting Ships of World War II, 1989
20th Century American Military History Crucial Site