Difference between revisions of "Iron Duke Class Battleship (1912)"

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==Fire Control Systems==
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===Rangefinders===
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===Directors===
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====Main Battery====
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The ships were fitted with a cam-type tripod-type director in a light aloft tower on the foremast along with a directing gun (in 'X' turret?)<ref>''The Director Firing Handbook, 1917''.  pp. 88, 142.</ref>. 
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The main battery could be divided into forward ('A', 'B' & 'Q') and aft ('X' & 'Y') groups for split director control<ref>''The Director Firing Handbook, 1917'', p. 88.</ref>.
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A [[C.O.S.]] in the [[TS]] afforded these options<ref>''The Director Firing Handbook, 1917''.  p. 88.</ref>:
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# all turrets on aloft tower
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# all turrets on directing gun
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# forward group on aloft tower, aft group on directing gun
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====Secondary Battery====
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The ships had a pair of directors fitted to port and starboard on the forward superstructure to direct the 6-in broadside guns.  [[H.M.S. Marlborough (1912)|''Marlborough'''s]] were pedestal-mounted, and the others tripod-mounted<ref>''The Director Firing Handbook, 1917''.  pp. 143.</ref>.
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===Torpedo Control===
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===Transmitting Stations===
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These ships were somewhat unusual in that they had a TS for the main battery and another for the secondary battery<ref>''Handbook for Fire Control Instruments, 1914'', pp. 6-7.</ref>.  It is not clear to me whether the secondary battery TS had a Dreyer table.
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===Dreyer Table===
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In June 1918, ''Marlborough'' had a Mark I Dreyer table while the other three units had Mark IV tables<ref>''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref> and all had been provided Dreyer Turret Control Tables<ref>absent from list in ''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref>.  The disparity in Dreyer Marks creates a loose impression that all ships were initially given Mark I tables and for some reason ''Marlborough'' missed her chance for an upgrade, perhaps due to her damage at the [[Battle of Jutland]].
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===Miscellaneous===
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==See Also==
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==Footnotes==
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<small>
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<references/>
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</small>
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==Bibliography==
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<small>
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{{Template:BibUKHandbookFireControlInstruments1914}}
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{{Template:BibBrooksDreadnoughtGunnery}}
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{{Template:BibUKDirectorFiringHandbook1917}}
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{{Template:BibUKDreyerTableHandbook1918}}
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</small>
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{{Template:Iron Duke Class (1912)}}
 
{{Template:Iron Duke Class (1912)}}
  
 
[[Category:Ship Class]]
 
[[Category:Ship Class]]

Revision as of 17:42, 15 August 2009

Fire Control Systems

Rangefinders

Directors

Main Battery

The ships were fitted with a cam-type tripod-type director in a light aloft tower on the foremast along with a directing gun (in 'X' turret?)[1].

The main battery could be divided into forward ('A', 'B' & 'Q') and aft ('X' & 'Y') groups for split director control[2].

A C.O.S. in the TS afforded these options[3]:

  1. all turrets on aloft tower
  2. all turrets on directing gun
  3. forward group on aloft tower, aft group on directing gun

Secondary Battery

The ships had a pair of directors fitted to port and starboard on the forward superstructure to direct the 6-in broadside guns. Marlborough's were pedestal-mounted, and the others tripod-mounted[4].

Torpedo Control

Transmitting Stations

These ships were somewhat unusual in that they had a TS for the main battery and another for the secondary battery[5]. It is not clear to me whether the secondary battery TS had a Dreyer table.

Dreyer Table

In June 1918, Marlborough had a Mark I Dreyer table while the other three units had Mark IV tables[6] and all had been provided Dreyer Turret Control Tables[7]. The disparity in Dreyer Marks creates a loose impression that all ships were initially given Mark I tables and for some reason Marlborough missed her chance for an upgrade, perhaps due to her damage at the Battle of Jutland.

Miscellaneous

See Also

Footnotes

  1. ↑ The Director Firing Handbook, 1917. pp. 88, 142.
  2. ↑ The Director Firing Handbook, 1917, p. 88.
  3. ↑ The Director Firing Handbook, 1917. p. 88.
  4. ↑ The Director Firing Handbook, 1917. pp. 143.
  5. ↑ Handbook for Fire Control Instruments, 1914, pp. 6-7.
  6. ↑ Handbook of Capt. F.C. Dreyer's Fire Control Tables, p. 3.
  7. ↑ absent from list in Handbook of Capt. F.C. Dreyer's Fire Control Tables, p. 3.

Bibliography

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:BibBrooksDreadnoughtGunnery Template:BibUKDirectorFiringHandbook1917 Template:BibUKDreyerTableHandbook1918

Template:Iron Duke Class (1912)

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