Difference between revisions of "Birmingham Class Cruiser (1913)"

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Three of the four [[Light Cruiser|light cruisers]] of the '''Birmingham Class''' (sometimes called the ''Birmingham'' subclass of the ''Town Class'') were completed in 1914, but ''Adelaide'' was completed in 1922.
 
Three of the four [[Light Cruiser|light cruisers]] of the '''Birmingham Class''' (sometimes called the ''Birmingham'' subclass of the ''Town Class'') were completed in 1914, but ''Adelaide'' was completed in 1922.
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==Armament==
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===Guns===
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*Nine 6-in guns; 4 on each broadside and 1 on CL aft.
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===Torpedoes===
  
 
==Fire Control==
 
==Fire Control==
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[[File:HandbookFireControl1914Plate99.jpg]]
  
 
===Rangefinders===
 
===Rangefinders===
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====Control Positions====
 
====Control Positions====
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There is a control top and a control platform aft with a navyphone connection between them.  Both positions enjoy voicepipe connection to the TS.<ref>''Handbook for Fire Control Instruments, 1914'', p. 65.</ref>
  
 
====Control Groups====
 
====Control Groups====
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Each broadside is arranged in 2 groups of 2 guns each.  The CL gun aft is assigned to one of either aft broadside group by a C.O.S.<ref>''Handbook for Fire Control Instruments, 1914'', p. 65.</ref>
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Three 2-way change-over switches in TS:
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# fitted in forward starboard guns circuit
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# fitted in forward port guns circuit
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# assigns the aft CL gun to port or starboard after group
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When C.O.S. 1 or 2 are in their first position, each group is worked by its own transmitters.  In the other setting, the forward group it is wired to is worked jointly with the aft group on the same broadside.  That is, the settings are "split the broadside" or "work the fore group with the aft group".
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Navyphones are also controlled by the same C.O.S. system, with telaupads at each gun.  Presumably, the 4(?) navyphones are in the TS.{{INF}}
  
 
===Directors===
 
===Directors===
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===Transmitting Stations===
 
===Transmitting Stations===
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There is a single TS.<ref>''Handbook for Fire Control Instruments, 1914'', p. 65.</ref>
  
 
===Dreyer Table===
 
===Dreyer Table===
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===Fire Control Instruments===
 
===Fire Control Instruments===
  
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{{TBC}}
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Vickers F.T.P. instruments, presumably Mark III.<ref>''Handbook for Fire Control Instruments, 1914'', p. 65.</ref>{{INF}}
  
 
==See Also==
 
==See Also==
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==Bibliography==
 
==Bibliography==
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<small>
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{{refbegin}}
 
*{{BibUKHandbookFireControlInstruments1909}}
 
*{{BibUKHandbookFireControlInstruments1909}}
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*{{BibUKHandbookFireControlInstruments1914}}
 
*{{BibUKDreyerTableHandbook1918}}
 
*{{BibUKDreyerTableHandbook1918}}
 
*{{BibUKFireControlInHMShips1919}}
 
*{{BibUKFireControlInHMShips1919}}
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</small>
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{{refend}}
  
 
{{CatClassUKLightCruiser}}
 
{{CatClassUKLightCruiser}}
  
 
{{Birmingham Class (1913)}}
 
{{Birmingham Class (1913)}}

Revision as of 23:53, 5 October 2009

Three of the four light cruisers of the Birmingham Class (sometimes called the Birmingham subclass of the Town Class) were completed in 1914, but Adelaide was completed in 1922.

Armament

Guns

  • Nine 6-in guns; 4 on each broadside and 1 on CL aft.

Torpedoes

Fire Control

File:HandbookFireControl1914Plate99.jpg

Rangefinders

Evershed Bearing Indicators

This equipment was unlikely to have been fitted for gun or searchlight control.[1]

Gunnery Control

Control Positions

There is a control top and a control platform aft with a navyphone connection between them. Both positions enjoy voicepipe connection to the TS.[2]

Control Groups

Each broadside is arranged in 2 groups of 2 guns each. The CL gun aft is assigned to one of either aft broadside group by a C.O.S.[3]

Three 2-way change-over switches in TS:

  1. fitted in forward starboard guns circuit
  2. fitted in forward port guns circuit
  3. assigns the aft CL gun to port or starboard after group

When C.O.S. 1 or 2 are in their first position, each group is worked by its own transmitters. In the other setting, the forward group it is wired to is worked jointly with the aft group on the same broadside. That is, the settings are "split the broadside" or "work the fore group with the aft group".

Navyphones are also controlled by the same C.O.S. system, with telaupads at each gun. Presumably, the 4(?) navyphones are in the TS.[Inference]

Directors

Birmingham and Lowestoft were fitted with directors in 1917 and 1918.[4] It is likely that Adelaide completed with one in place.[Inference]

Torpedo Control

Transmitting Stations

There is a single TS.[5]

Dreyer Table

These ships had no fire control tables.[6]

Fire Control Instruments

Vickers F.T.P. instruments, presumably Mark III.[7][Inference]

See Also

Footnotes

  1. ↑ The Technical History and Index: Fire Control in HM Ships, 1919, p. 29.
  2. ↑ Handbook for Fire Control Instruments, 1914, p. 65.
  3. ↑ Handbook for Fire Control Instruments, 1914, p. 65.
  4. ↑ The Technical History and Index: Fire Control in HM Ships, 1919, pp. 11-12.
  5. ↑ Handbook for Fire Control Instruments, 1914, p. 65.
  6. ↑ absent from list in Handbook of Capt. F.C. Dreyer's Fire Control Tables, p. 3.
  7. ↑ Handbook for Fire Control Instruments, 1914, p. 65.

Bibliography

Template:CatClassUKLightCruiser

Template:Birmingham Class (1913)

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