Difference between revisions of "Duncan Class Battleship (1901)"

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==Fire Control==
 
==Fire Control==
  
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The general system of wiring between the TSs in ships prior to [[Lord Nelson Class Battleship (1906)|''Lord Nelson'' class]] is illustrated in ''Handbook for Fire Control Instruments, 1914''<ref>''Handbook for Fire Control Instruments, 1914'', p. 50 & Plates 50 and 54(I).</ref>.
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The general system of wiring between the TSs in ships prior to [[Lord Nelson Class Battleship (1906)|''Lord Nelson'' class]] is illustrated in ''Handbook for Fire Control Instruments, 1914''.<ref>''Handbook for Fire Control Instruments, 1914'', p. 50 & Plates 50 and 54(I).</ref>
  
 
The equipment in ''Montagu'' is open to conjecture owing to her loss in 1906.
 
The equipment in ''Montagu'' is open to conjecture owing to her loss in 1906.
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===Directors===
 
===Directors===
  
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These ships never received directors for main or secondary batteries<ref>''Director Firing Handbook, 1917'', pp. 142-3.</ref>.
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These ships never received directors for main or secondary batteries.<ref>''Director Firing Handbook, 1917'', pp. 142-3.</ref>
  
 
===Gunnery Control===
 
===Gunnery Control===
  
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The ship's guns were organized in 3 groups<ref>''Handbook for Fire Control Instruments, 1914'', p. 8.</ref>:
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The ship's guns were organized in 3 groups:<ref>''Handbook for Fire Control Instruments, 1914'', p. 8.</ref>
 
# Two 12-in turrets
 
# Two 12-in turrets
 
# Starboard 6-in guns ('A' & 'X')
 
# Starboard 6-in guns ('A' & 'X')
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===Local Control in Turrets===
 
===Local Control in Turrets===
  
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There was no provision in these ships for local turret control wherein the receivers in the turret could be driven by transmitters in the officer's position at the back of the turret<ref>''Handbook for Fire Control Instruments, 1914'', p. 50.</ref>.
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There was no provision in these ships for local turret control wherein the receivers in the turret could be driven by transmitters in the officer's position at the back of the turret.<ref>''Handbook for Fire Control Instruments, 1914'', p. 50.</ref>
  
 
===Transmitting Stations===
 
===Transmitting Stations===
  
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These ships had fore and aft [[TS]]s<ref>''Handbook for Fire Control Instruments, 1914'', p. 50 & Plates 50 and 54(I).</ref>.
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These ships had fore and aft [[TS]]es.<ref>''Handbook for Fire Control Instruments, 1914'', p. 50 & Plates 50 and 54(I).</ref>
  
 
A [[C.O.S.]] allowed control options of
 
A [[C.O.S.]] allowed control options of
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===Dreyer Table===
 
===Dreyer Table===
  
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These ships never received Dreyer tables<ref>''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref>.
+
These ships never received Dreyer tables.<ref>''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref>
  
 
===Shipwide Network===
 
===Shipwide Network===
  
 
By late 1914, these ships were equipped with range, orders and deflection circuits, with  
 
By late 1914, these ships were equipped with range, orders and deflection circuits, with  
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those in ''Albemarle'', ''Cornwallis'' and ''Duncan'' being [[Vickers|Vickers, Son and Maxim]] with [[Barr and Stroud]] [[Range Rate|rate]] instruments and those in ''Exmouth'' and ''Russell'' being Barr and Stroud Mark II for range, Mark I for orders, and [[Vickers]] for deflection<ref>''Handbook for Fire Control Instruments, 1914'', p. 72.</ref>.
+
those in ''Albemarle'', ''Cornwallis'' and ''Duncan'' being [[Vickers|Vickers, Son and Maxim]] with [[Barr and Stroud]] [[Range Rate|rate]] instruments and those in ''Exmouth'' and ''Russell'' being Barr and Stroud Mark II for range and rate, Mark I for orders, and [[Vickers]] for deflection.<ref>''Handbook for Fire Control Instruments, 1914'', p. 72.</ref><ref>''Handbook for Fire Control Instruments, 1909'', pp. 56-7, 59.</ref>
  
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These ships lacked ''Target Visible'' and ''Gun Ready'' signals<ref>''Handbook for Fire Control Instruments, 1914'', p. 11.</ref>.
+
Although, possibly just generally true due to the variations described above, the ''Handbook for Fire Control Instruments, 1909'' lists the equipment on this class as:<ref>''Handbook for Fire Control Instruments, 1909'', p. 59.</ref>
 +
* Range (B. & S. Mark II):  6 transmitters (12 in ''Exmouth''), 32 receivers
 +
* Orders (B. & S. Mark I): 6 transmitters (12 in ''Exmouth''), 22 receivers
 +
* Rate (B. & S. Mark II): 4 transmitters, 8 receivers
 +
* Deflection (Vickers): 6 transmitters (12 in ''Exmouth''), 26 receivers (30 in ''Exmouth'')
 +
* Group Switches:  3 (converted by Chatham)
 +
Additionally, this class had the following Siemens fire control equipment:<ref>''Handbook for Fire Control Instruments, 1909'', p. 59.</ref>
 +
* Turret fire gongs: 8  with 2 keys
 +
* Fire Gongs: 12 (76 in ''Exmouth'') with 4 keys
 +
* Captain's Cease Fire Bells:  18 with 1 key
 +
 
 +
These ships lacked ''Target Visible'' and ''Gun Ready'' signals.<ref>''Handbook for Fire Control Instruments, 1914'', p. 11.</ref>
  
 
===Torpedo Control===
 
===Torpedo Control===
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==Footnotes==
 
==Footnotes==
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<small>
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{{reflist}}
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<references/>
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−
</small>
+
  
 
==Bibliography==
 
==Bibliography==
 
<small>
 
<small>
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{{Template:BibUKHandbookFireControlInstruments1914}}
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{{BibUKHandbookFireControlInstruments1909}}
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{{Template:BibUKDirectorFiringHandbook1917}}
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{{BibUKHandbookFireControlInstruments1914}}
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{{Template:BibUKDreyerTableHandbook1918}}
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{{BibUKDirectorFiringHandbook1917}}
 +
{{BibUKDreyerTableHandbook1918}}
 
</small>
 
</small>
  

Revision as of 17:42, 19 September 2009

Fire Control

The general system of wiring between the TSs in ships prior to Lord Nelson class is illustrated in Handbook for Fire Control Instruments, 1914.[1]

The equipment in Montagu is open to conjecture owing to her loss in 1906.

Rangefinders

Evershed Bearing Indicators

It is not known if this equipment was ever provided.

Directors

These ships never received directors for main or secondary batteries.[2]

Gunnery Control

The ship's guns were organized in 3 groups:[3]

  1. Two 12-in turrets
  2. Starboard 6-in guns ('A' & 'X')
  3. Port 6-in guns ('B' & 'Y')

Local Control in Turrets

There was no provision in these ships for local turret control wherein the receivers in the turret could be driven by transmitters in the officer's position at the back of the turret.[4]

Transmitting Stations

These ships had fore and aft TSes.[5]

A C.O.S. allowed control options of

  1. Fore
  2. After
  3. Separate

Each control group had transmitters (of various type, see Shipwide Network) with a pair of receivers, one wired directly to the transmitter as a tell-tale, and the other fed off the wires going to the distant guns (i.e., the aft guns for the fore TS and vice-versa) as a repeat. "These repeat receivers are necessary to keep the idle transmitters in step; when changing back from separate control they are required to enable both halves of the group to be set alike before being paralleled on to one transmitter."[6]

Dreyer Table

These ships never received Dreyer tables.[7]

Shipwide Network

By late 1914, these ships were equipped with range, orders and deflection circuits, with those in Albemarle, Cornwallis and Duncan being Vickers, Son and Maxim with Barr and Stroud rate instruments and those in Exmouth and Russell being Barr and Stroud Mark II for range and rate, Mark I for orders, and Vickers for deflection.[8][9]

Although, possibly just generally true due to the variations described above, the Handbook for Fire Control Instruments, 1909 lists the equipment on this class as:[10]

  • Range (B. & S. Mark II): 6 transmitters (12 in Exmouth), 32 receivers
  • Orders (B. & S. Mark I): 6 transmitters (12 in Exmouth), 22 receivers
  • Rate (B. & S. Mark II): 4 transmitters, 8 receivers
  • Deflection (Vickers): 6 transmitters (12 in Exmouth), 26 receivers (30 in Exmouth)
  • Group Switches: 3 (converted by Chatham)

Additionally, this class had the following Siemens fire control equipment:[11]

  • Turret fire gongs: 8 with 2 keys
  • Fire Gongs: 12 (76 in Exmouth) with 4 keys
  • Captain's Cease Fire Bells: 18 with 1 key

These ships lacked Target Visible and Gun Ready signals.[12]

Torpedo Control

See Also

Footnotes

  1. ↑ Handbook for Fire Control Instruments, 1914, p. 50 & Plates 50 and 54(I).
  2. ↑ Director Firing Handbook, 1917, pp. 142-3.
  3. ↑ Handbook for Fire Control Instruments, 1914, p. 8.
  4. ↑ Handbook for Fire Control Instruments, 1914, p. 50.
  5. ↑ Handbook for Fire Control Instruments, 1914, p. 50 & Plates 50 and 54(I).
  6. ↑ Handbook for Fire Control Instruments, 1914, pp. 50-1.
  7. ↑ Handbook of Capt. F.C. Dreyer's Fire Control Tables, p. 3.
  8. ↑ Handbook for Fire Control Instruments, 1914, p. 72.
  9. ↑ Handbook for Fire Control Instruments, 1909, pp. 56-7, 59.
  10. ↑ Handbook for Fire Control Instruments, 1909, p. 59.
  11. ↑ Handbook for Fire Control Instruments, 1909, p. 59.
  12. ↑ Handbook for Fire Control Instruments, 1914, p. 11.

Bibliography

Admiralty, Gunnery Branch (1910). Handbook for Fire Control Instruments, 1909. Copy No. 173 is Ja 345a at Admiralty Library, Portsmouth, United Kingdom. Admiralty, Gunnery Branch (1914). Handbook for Fire Control Instruments, 1914. G. 01627/14. C.B. 1030. Copy 1235 at The National Archives. ADM 186/191. Template:BibUKDirectorFiringHandbook1917 Template:BibUKDreyerTableHandbook1918

Template:Duncan Class (1901)

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