Difference between revisions of "Indefatigable Class Battlecruiser (1909)"
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===Evershed Bearing Indicators=== | ===Evershed Bearing Indicators=== | ||
− | All 3 ships were likely fitted with this equipment at some point, but only ''Indefatigable'' is explicitly mentioned in ''Handbook for Fire Control Instruments, 1914''<ref>''Handbook for Fire Control Instruments, 1914'', pp. 33-9.</ref> | + | All 3 ships were likely fitted with this equipment at some point, but only ''Indefatigable'' is explicitly mentioned in ''Handbook for Fire Control Instruments, 1914''.<ref>''Handbook for Fire Control Instruments, 1914'', pp. 33-9.</ref> |
The transmitting positions were | The transmitting positions were | ||
Line 13: | Line 13: | ||
* Upper aft conning tower | * Upper aft conning tower | ||
− | The protocols for how her crew should handle [[Wooding|wooding]] of the turrets was outlined in the ''Handbook for Fire Control Instruments, 1914''<ref>''Handbook for Fire Control Instruments, 1914'', p. 36.</ref> | + | The protocols for how her crew should handle [[Wooding|wooding]] of the turrets was outlined in the ''Handbook for Fire Control Instruments, 1914''.<ref>''Handbook for Fire Control Instruments, 1914'', p. 36.</ref> |
===Gunnery Control=== | ===Gunnery Control=== | ||
− | The control arrangements were likely as follows<ref>''Handbook for Fire Control Instruments, 1914'', pp. 7-8. (some inferences drawn due to fundamental differences between this design and that of ''Orion'' to which it is likened).</ref> | + | The control arrangements were likely as follows.<ref>''Handbook for Fire Control Instruments, 1914'', pp. 7-8. (some inferences drawn due to fundamental differences between this design and that of ''Orion'' to which it is likened).</ref> |
====Control Positions==== | ====Control Positions==== | ||
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* 'Y' turret{{INF}} | * 'Y' turret{{INF}} | ||
− | Some ships had C.O.S.s within the control positions so they could be connected to either TS<ref>''Handbook for Fire Control Instruments, 1914'', p. 7.</ref> | + | Some ships had C.O.S.s within the control positions so they could be connected to either TS.<ref>''Handbook for Fire Control Instruments, 1914'', p. 7.</ref> |
====Control Groups==== | ====Control Groups==== | ||
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====Main Battery==== | ====Main Battery==== | ||
− | The ships were fitted with a tripod-type director in a light aloft tower on the foremast along with a directing gun in the Y turret<ref>''The Director Firing Handbook, 1917''. pp. 88, 142.</ref> | + | The ships were fitted with a tripod-type director in a light aloft tower on the foremast along with a directing gun in the Y turret.<ref>''The Director Firing Handbook, 1917''. pp. 88, 142.</ref> The battery was not divisible into for split director firing.<ref>''The Director Firing Handbook, 1917''. p. 88.</ref> |
====Secondary Battery==== | ====Secondary Battery==== | ||
− | The 4-in broadside guns are not listed as ever having had directors installed<ref>''The Director Firing Handbook, 1917''. pp. 143.</ref> | + | The 4-in broadside guns are not listed as ever having had directors installed.<ref>''The Director Firing Handbook, 1917''. pp. 143.</ref> |
===Torpedo Control=== | ===Torpedo Control=== | ||
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===Transmitting Stations=== | ===Transmitting Stations=== | ||
− | Like all large British ships of the era prior to [[H.M.S. King George V (1911)|''King George V'']] and [[H.M.S. Queen Mary (1912)|''Queen Mary'']], these ships had 2 [[TS]] | + | Like all large British ships of the era prior to [[H.M.S. King George V (1911)|''King George V'']] and [[H.M.S. Queen Mary (1912)|''Queen Mary'']], these ships had 2 [[TS]]es.<ref>''Handbook for Fire Control Instruments, 1914'', pp. 6-7.</ref> |
===Dreyer Table=== | ===Dreyer Table=== | ||
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As of 1918, the ''New Zealand'' and ''Australia'' carried Mark I Dreyer tables<ref>''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref>. As to time of installation, one secondary source asserts that ''Indefatigable'' and ''New Zealand'' had Mark I tables at the [[Battle of Jutland]],<ref>Sumida, Jon. ''In Defence of Naval Supremacy'' p. 300.</ref> but no primary source confirms this. Moreover, a first-hand account seems to suggest a manual plotting board was being used in the T.S. of ''New Zealand''.<ref>Midshipman Gordon Eady quoted in Steel & Hart. ''Jutland 1916'', p. 75.</ref> | As of 1918, the ''New Zealand'' and ''Australia'' carried Mark I Dreyer tables<ref>''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref>. As to time of installation, one secondary source asserts that ''Indefatigable'' and ''New Zealand'' had Mark I tables at the [[Battle of Jutland]],<ref>Sumida, Jon. ''In Defence of Naval Supremacy'' p. 300.</ref> but no primary source confirms this. Moreover, a first-hand account seems to suggest a manual plotting board was being used in the T.S. of ''New Zealand''.<ref>Midshipman Gordon Eady quoted in Steel & Hart. ''Jutland 1916'', p. 75.</ref> | ||
− | The ships were never given Dreyer Turret Control | + | The ships were never given [[Dreyer Turret Control Table]]s.<ref>''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref> |
− | === | + | ===Fire Control Instruments=== |
− | The ships used [[Vickers]] [[F.T.P.]] Mark III range and deflection instruments to send data to gun sights, retaining [[Barr and Stroud]] (probably Mark II*{{INF}}) instruments for other destinations<ref>''Handbook for Fire Control Instruments, 1914'', pp. 72.</ref> | + | The ships used [[Vickers]] [[F.T.P.]] Mark III range and deflection instruments to send data to gun sights, retaining [[Barr and Stroud]] (probably Mark II*{{INF}}) instruments for other destinations.<ref>''Handbook for Fire Control Instruments, 1914'', pp. 72.</ref> |
− | ''Target Visible'' and ''Gun Ready'' signals mounted in the | + | ''Target Visible'' and ''Gun Ready'' signals mounted in the TSes and control positions indicated which turrets could see the target and which guns were ready.<ref>''Handbook for Fire Control Instruments, 1914'', p. 11.</ref> |
==See Also== | ==See Also== | ||
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==Footnotes== | ==Footnotes== | ||
− | + | {{reflist}} | |
− | + | ||
− | + | ||
==Bibliography== | ==Bibliography== | ||
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{{BibSteelHartJutland1916}} | {{BibSteelHartJutland1916}} | ||
</small> | </small> | ||
+ | |||
+ | [[Category:Ship Class|Indefatigable Class (1909), HMS]] | ||
{{Template:Indefatigable Class (1909)}} | {{Template:Indefatigable Class (1909)}} | ||
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Revision as of 13:33, 22 September 2009
Fire Control
Rangefinders
Evershed Bearing Indicators
All 3 ships were likely fitted with this equipment at some point, but only Indefatigable is explicitly mentioned in Handbook for Fire Control Instruments, 1914.[1]
The transmitting positions were
- Fore control platform (transmitters to port and starboard with a local switch to select one in use)
- 'A' turret
- 'X' turret
- Upper aft conning tower
The protocols for how her crew should handle wooding of the turrets was outlined in the Handbook for Fire Control Instruments, 1914.[2]
Gunnery Control
The control arrangements were likely as follows.[3]
Control Positions
- Fore top
- Main top[Inference]
- 'A' turret[Inference]
- 'Y' turret[Inference]
Some ships had C.O.S.s within the control positions so they could be connected to either TS.[4]
Control Groups
The four 12-in turrets were separate groups, each with a local C.O.S.[Inference] so that it could be connected to
- Forward TS
- After TS
- Local control from officer's position within turret
Directors
Main Battery
The ships were fitted with a tripod-type director in a light aloft tower on the foremast along with a directing gun in the Y turret.[5] The battery was not divisible into for split director firing.[6]
Secondary Battery
The 4-in broadside guns are not listed as ever having had directors installed.[7]
Torpedo Control
Transmitting Stations
Like all large British ships of the era prior to King George V and Queen Mary, these ships had 2 TSes.[8]
Dreyer Table
As of 1918, the New Zealand and Australia carried Mark I Dreyer tables[9]. As to time of installation, one secondary source asserts that Indefatigable and New Zealand had Mark I tables at the Battle of Jutland,[10] but no primary source confirms this. Moreover, a first-hand account seems to suggest a manual plotting board was being used in the T.S. of New Zealand.[11]
The ships were never given Dreyer Turret Control Tables.[12]
Fire Control Instruments
The ships used Vickers F.T.P. Mark III range and deflection instruments to send data to gun sights, retaining Barr and Stroud (probably Mark II*[Inference]) instruments for other destinations.[13]
Target Visible and Gun Ready signals mounted in the TSes and control positions indicated which turrets could see the target and which guns were ready.[14]
See Also
Footnotes
- ↑ Handbook for Fire Control Instruments, 1914, pp. 33-9.
- ↑ Handbook for Fire Control Instruments, 1914, p. 36.
- ↑ Handbook for Fire Control Instruments, 1914, pp. 7-8. (some inferences drawn due to fundamental differences between this design and that of Orion to which it is likened).
- ↑ Handbook for Fire Control Instruments, 1914, p. 7.
- ↑ The Director Firing Handbook, 1917. pp. 88, 142.
- ↑ The Director Firing Handbook, 1917. p. 88.
- ↑ The Director Firing Handbook, 1917. pp. 143.
- ↑ Handbook for Fire Control Instruments, 1914, pp. 6-7.
- ↑ Handbook of Capt. F.C. Dreyer's Fire Control Tables, p. 3.
- ↑ Sumida, Jon. In Defence of Naval Supremacy p. 300.
- ↑ Midshipman Gordon Eady quoted in Steel & Hart. Jutland 1916, p. 75.
- ↑ Handbook of Capt. F.C. Dreyer's Fire Control Tables, p. 3.
- ↑ Handbook for Fire Control Instruments, 1914, pp. 72.
- ↑ Handbook for Fire Control Instruments, 1914, p. 11.
Bibliography
Template:BibUKDirectorFiringHandbook1917 Template:BibUKDreyerTableHandbook1918 Template:BibSumidaIDNS Template:BibBrooksDreadnoughtGunnery Template:BibRobertsBattlecruisers Template:BibSteelHartJutland1916 Template:Indefatigable Class (1909)