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{{DISPLAYTITLE:''Pensacola''-class cruiser}}
 
{{DISPLAYTITLE:''Pensacola''-class cruiser}}
{|{{Infobox ship begin}}
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{{Infobox ship
{{Infobox ship image
 
 
|Ship image=[[File:USS Pensacola (CA-24).jpg|300px]]
 
|Ship image=[[File:USS Pensacola (CA-24).jpg|300px]]
 
|Ship caption='''USS ''Pensacola'' (CA-24)'''
 
|Ship caption='''USS ''Pensacola'' (CA-24)'''
 
|module={{Infobox ship class overview|embed=yes
}}
 
{{Infobox ship class overview
 
 
|Name='''''Pensacola''-class cruiser'''
 
|Name='''''Pensacola''-class cruiser'''
 
|Builders=
 
|Builders=
 
|Operators=[[File:US flag 48 stars.svg|20px]] United States Navy
 
|Operators=[[File:US flag 48 stars.svg|20px]] United States Navy
 
|Class before={{sclass-|St. Louis|cruiser (1905)|0}} cruiser
 
|Class before={{sclass-|St. Louis|cruiser (1905)|0}} cruiser
|Class after={{sclass|Northampton|cruiser|1}}
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|Class after={{sclass-|Northampton|cruiser|0}}
 
|Subclasses=
 
|Subclasses=
 
|Built range=
 
|Built range=
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|Total ships preserved=0
 
|Total ships preserved=0
 
}}
 
}}
{{Infobox ship characteristics
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|module2={{Infobox ship characteristics|embed=yes
|Hide header=
 
|Header caption=
 
 
|Ship type=[[Heavy Cruiser]]
 
|Ship type=[[Heavy Cruiser]]
 
|Ship displacement=9100 tons (standard) <br> 11512 tons (full)
 
|Ship displacement=9100 tons (standard) <br> 11512 tons (full)
 
|Ship length={{convert|585.5|ft|m|abbr=on}}
 
|Ship length={{convert|585.5|ft|m|abbr=on}}
 
|Ship beam={{convert|65.0|ft|m|abbr=on}}
 
|Ship beam={{convert|65.0|ft|m|abbr=on}}
|Ship draught=
 
 
|Ship draft={{convert|19.5|ft|m|abbr=on}}
 
|Ship draft={{convert|19.5|ft|m|abbr=on}}
 
|Ship propulsion=Steam turbines <br> 8 boilers <br> 4 Screws <br> {{convert|107000|HP|abbr=on}}
 
|Ship propulsion=Steam turbines <br> 8 boilers <br> 4 Screws <br> {{convert|107000|HP|abbr=on}}
 
|Ship speed={{convert|32.5|kn}}
 
|Ship speed={{convert|32.5|kn}}
|Ship range=
 
 
|Ship complement=1,200<ref>{{cite book|last=Silverstone|first=Paul H|year=1965|title=US Warships of World War II|publisher=Naval Institute Press|location=Annapolis, Maryland|isbn=0-87021-773-9}}</ref>
 
|Ship complement=1,200<ref>{{cite book|last=Silverstone|first=Paul H|year=1965|title=US Warships of World War II|publisher=Naval Institute Press|location=Annapolis, Maryland|isbn=0-87021-773-9}}</ref>
|Ship sensors=
 
|Ship EW=
 
 
|Ship armament=
 
|Ship armament=
 
* 10 × [[8"/55 caliber gun|8-inch/55 caliber guns]] (2×2, 2×3)
 
* 10 × [[8"/55 caliber gun|8-inch/55 caliber guns]] (2×2, 2×3)
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* 28 × [[Oerlikon 20 mm cannon|20 mm Oerlikon cannons]] (1943)
 
* 28 × [[Oerlikon 20 mm cannon|20 mm Oerlikon cannons]] (1943)
 
* 6 × [[Mark 15 torpedo|21-inch]] [[torpedo tubes]] (removed before 1941)
 
* 6 × [[Mark 15 torpedo|21-inch]] [[torpedo tubes]] (removed before 1941)
|Ship armour=
 
 
|Ship armor=2.5-4-inch belt <br> 1-1.75-inch decks <br> .75-2.5-inch turrets <br> .75-inch barbettes <br> 1.25-inch CT
 
|Ship armor=2.5-4-inch belt <br> 1-1.75-inch decks <br> .75-2.5-inch turrets <br> .75-inch barbettes <br> 1.25-inch CT
 
|Ship aircraft=2
 
|Ship aircraft=2
 
|Ship aircraft facilities=2 catapults <br> no hangars
 
|Ship aircraft facilities=2 catapults <br> no hangars
|Ship notes=
 
 
}}
 
}}
|}
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}}
   
 
The '''''Pensacola'' class''' of [[United States Navy]] [[heavy cruiser]]s were the first "treaty cruisers", designed under the limitations set by the [[Washington Naval Treaty]], which limited cruisers to a maximum of 10,000 tons displacement and a maximum main battery caliber of 8 inches.
 
The '''''Pensacola'' class''' of [[United States Navy]] [[heavy cruiser]]s were the first "treaty cruisers", designed under the limitations set by the [[Washington Naval Treaty]], which limited cruisers to a maximum of 10,000 tons displacement and a maximum main battery caliber of 8 inches.
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{{Pensacola_class cruiser}}
 
{{Pensacola_class cruiser}}
 
{{WWIIUSShips}}
 
{{WWIIUSShips}}
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{{Wikipedia|Pensacola-class cruiser}}
   
 
[[Category:Cruiser classes]]
 
[[Category:Cruiser classes]]
[[Category:Pensacola-class cruisers| ]]
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[[Category:Pensacola-class cruisers|Pensacola-class cruisers]]
[[Category:World War II cruisers of the United States| ]]
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[[Category:World War II cruisers of the United States|World War II cruisers of the United States]]

Latest revision as of 21:28, 8 August 2016

Pensacola-class cruiser
USS Pensacola (CA-24) underway at sea in September 1935 (NH 97838).jpg
USS Pensacola (CA-24)
Class overview
Name: Pensacola-class cruiser
Operators: US flag 48 stars.svg United States Navy
Preceded by: St. Louis-class cruiser
Succeeded by: Northampton-class
In commission: 1929–1947
Completed: 2
Retired: 2
Preserved: 0
General characteristics
Type: Heavy Cruiser
Displacement: 9100 tons (standard)
11512 tons (full)
Length: 585.5 ft (178.5 m)
Beam: 65.0 ft (19.8 m)
Draft: 19.5 ft (5.9 m)
Propulsion: Steam turbines
8 boilers
4 Screws
107,000 hp (80,000 kW)
Speed: 32.5 knots (60.2 km/h; 37.4 mph)
Complement: 1,200[1]
Armament:
Armor: 2.5-4-inch belt
1-1.75-inch decks
.75-2.5-inch turrets
.75-inch barbettes
1.25-inch CT
Aircraft carried: 2
Aviation facilities: 2 catapults
no hangars

The Pensacola class of United States Navy heavy cruisers were the first "treaty cruisers", designed under the limitations set by the Washington Naval Treaty, which limited cruisers to a maximum of 10,000 tons displacement and a maximum main battery caliber of 8 inches.

Description[]

In an effort to remain within treaty limits, while still mounting a very heavy main battery of ten 8" guns, the hull was of welded construction, and the armor belt was thin (varying from 2.5 to 4 inches in thickness). This was inadequate to protect her vitals from enemy 8" shells and was no thicker than the armor on 6" gun cruisers. In fact, Pensacola and Salt Lake City were classified as light cruisers due to their minimal armor until re-designated in July 1931 as heavy cruisers in accord with international practice of designating all cruisers with guns larger than 6" as heavy cruisers.

Flush-decked and with their main battery equally divided fore and aft, they were handsome and well proportioned ships.

Their main armament consisted of ten 8 in (200 mm) guns, in two twin turrets on the main deck, and two triple turrets two decks above, making it one of the two US Navy ship classes (besides the Nevada-class battleships) to have different-sized turrets for main armament. All guns in each turret were mounted in a single slide, and were unable to elevate independently of each other. Also, unlike the very few other ships with different sized main battery turrets (Nevada-class battleships and King George V-class battleships, the Pensacolas had the larger turrets superfiring over the smaller turrets. (The original design for the Lexington-class battlecruisers would have shared this unique arrangement, as they called for ten 14-inch (360 mm) guns, with the triple turrets superfiring over twin turrets, and would have appeared like scaled up Pensacolas.) Placing heavier turrets above lighter ones allows for finer lines for a given length, however this causes top heavyness and reduces stability.

Unfortunately, because of the rather unusual main battery layout and their heavy tripod fore-masts, they were top-heavy and prone to excessive rolling. This combined with low freeboard forward made them inferior seaboats compared to later designs. Rework in the shipyards modified the hull and superstructure in the 1930s to eliminate the rolling.[2]

The Navy only built two ships in this class before switching to the Northampton-class design. Many of the deficiencies of the Pensacola-class were corrected by reducing the main battery to three triple turrets (two forward, one aft) and adding an additional upper deck forward of amidships.

Ships in class[]

See also[]

References[]

  1. Silverstone, Paul H (1965). US Warships of World War II. Annapolis, Maryland: Naval Institute Press. ISBN 0-87021-773-9. 
  2. Silverstone, Paul H (1965). US Warships of World War II. Annapolis, Maryland: Naval Institute Press. ISBN 0-87021-773-9. 

External links[]



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