Difference between revisions of "Orion Class Battleship (1910)"
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===Rangefinders=== | ===Rangefinders=== | ||
+ | |||
+ | ===Evershed Bearing Indicators=== | ||
+ | |||
+ | All 4 units were likely fitted with this equipment before late 1914, albeit only ''Orion'' is specifically known to have been fitted<ref>''Handbook for Fire Control Instruments, 1914'', p. 36.</ref>. | ||
+ | |||
+ | ''Orion'''s transmitting positions in late 1914 were | ||
+ | * Conning Tower | ||
+ | * Fore control platform (transmitters to port and starboard with [[C.O.S.]] to select one in use) | ||
+ | * 'B' turret | ||
+ | * 'Q' turret (scheduled to be changed to 'X' turret) | ||
+ | |||
+ | The protocols for handling [[Wooding|wooding]] of the turrets is outlined in the ''Handbook for Fire Control Instruments, 1914''<ref>''Handbook for Fire Control Instruments, 1914'', p. 37.</ref>. | ||
+ | |||
+ | ===Gunnery Control=== | ||
+ | |||
+ | The control arrangements were as follows<ref>''Handbook for Fire Control Instruments, 1914'', p. 7.</ref>. | ||
+ | |||
+ | ====Control Positions==== | ||
+ | * Control top | ||
+ | * Gunnery control tower | ||
+ | * 'B' turret | ||
+ | * 'Q' turret | ||
+ | |||
+ | 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==== | ||
+ | |||
+ | The five 12-in turrets were each a separate group with a local [[C.O.S.]]{{INF}} so that it could be connected to | ||
+ | * Forward TS | ||
+ | * After TS | ||
+ | * Local control from officer's position within turret | ||
===Directors=== | ===Directors=== | ||
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A [[C.O.S.]] in the [[TS]] afforded these options: | A [[C.O.S.]] in the [[TS]] afforded these options: | ||
− | # | + | # All turrets on aloft tower |
− | # | + | # All turrets on directing gun |
− | # | + | # Forward group on aloft tower, aft group on directing gun |
====Secondary Battery==== | ====Secondary Battery==== | ||
− | The 4-in guns never had directors installed<ref>absent from list in ''The Director Firing Handbook, 1917''. | + | The 4-in guns never had directors installed<ref>absent from list in ''The Director Firing Handbook, 1917''. p. 143.</ref>. |
===Torpedo Control=== | ===Torpedo Control=== | ||
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[[H.M.S._Orion_(1910)|''Orion'']] and [[H.M.S._Conqueror_(1911)|''Conqueror'']] were eventually retro-fitted with a Mark II Dreyer tables, while [[H.M.S._Monarch_(1911)|''Monarch'']] and [[H.M.S._Thunderer_(1911)|''Thunderer'']] received Mark III Dreyer tables<ref>''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref>. As of June 1918, they had not been provided Dreyer Turret Control Tables<ref>absent from list in ''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref>. | [[H.M.S._Orion_(1910)|''Orion'']] and [[H.M.S._Conqueror_(1911)|''Conqueror'']] were eventually retro-fitted with a Mark II Dreyer tables, while [[H.M.S._Monarch_(1911)|''Monarch'']] and [[H.M.S._Thunderer_(1911)|''Thunderer'']] received Mark III Dreyer tables<ref>''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref>. As of June 1918, they had not been provided Dreyer Turret Control Tables<ref>absent from list in ''Handbook of Capt. F.C. Dreyer's Fire Control Tables'', p. 3.</ref>. | ||
− | === | + | ===Shipwide Network=== |
+ | |||
+ | All 4 units used [[Vickers]] [[F.T.P.]] Mark III range and deflection instruments to the gun sights and [[Barr and Stroud]] (probably Mark II*{{INF}}) instruments for other purposes<ref>''Handbook for Fire Control Instruments, 1914'', pp. 72.</ref>. | ||
+ | |||
==See Also== | ==See Also== |
Revision as of 16:29, 19 August 2009
Fire Control Systems
Rangefinders
Evershed Bearing Indicators
All 4 units were likely fitted with this equipment before late 1914, albeit only Orion is specifically known to have been fitted[1].
Orion's transmitting positions in late 1914 were
- Conning Tower
- Fore control platform (transmitters to port and starboard with C.O.S. to select one in use)
- 'B' turret
- 'Q' turret (scheduled to be changed to 'X' turret)
The protocols for handling wooding of the turrets is outlined in the Handbook for Fire Control Instruments, 1914[2].
Gunnery Control
The control arrangements were as follows[3].
Control Positions
- Control top
- Gunnery control tower
- 'B' turret
- 'Q' turret
Some ships had C.O.S.s within the control positions so they could be connected to either TS[4].
Control Groups
The five 12-in turrets were each a separate group 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 cam-type tripod-type director in a light aloft tower on the foremast along with a directing gun (in 'X' turret?)[5].
This class was the first in which the main battery could be divided into forward ('A', 'B' & 'Q') and aft ('X' & 'Y') groups for split director control[6].
A C.O.S. in the TS afforded these options:
- All turrets on aloft tower
- All turrets on directing gun
- Forward group on aloft tower, aft group on directing gun
Secondary Battery
The 4-in guns never had directors installed[7].
Torpedo Control
Transmitting Stations
Like nearly all large British ships of the era prior to King George V and Queen Mary[8], these ships likely had 2 TSs.
Dreyer Table
Orion and Conqueror were eventually retro-fitted with a Mark II Dreyer tables, while Monarch and Thunderer received Mark III Dreyer tables[9]. As of June 1918, they had not been provided Dreyer Turret Control Tables[10].
Shipwide Network
All 4 units used Vickers F.T.P. Mark III range and deflection instruments to the gun sights and Barr and Stroud (probably Mark II*[Inference]) instruments for other purposes[11].
See Also
Footnotes
- ↑ Handbook for Fire Control Instruments, 1914, p. 36.
- ↑ Handbook for Fire Control Instruments, 1914, p. 37.
- ↑ Handbook for Fire Control Instruments, 1914, p. 7.
- ↑ Handbook for Fire Control Instruments, 1914, p. 7.
- ↑ The Director Firing Handbook, 1917. pp. 88, 142.
- ↑ The Director Firing Handbook, 1917. p. 88.
- ↑ absent from list in The Director Firing Handbook, 1917. p. 143.
- ↑ Handbook for Fire Control Instruments, 1914, pp. 6-7.
- ↑ Handbook of Capt. F.C. Dreyer's Fire Control Tables, p. 3.
- ↑ absent from list in Handbook of Capt. F.C. Dreyer's Fire Control Tables, p. 3.
- ↑ Handbook for Fire Control Instruments, 1914, pp. 72.
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:BibUKDirectorFiringHandbook1917 Template:BibUKDreyerTableHandbook1918