Difference between revisions of "Queen Elizabeth Class Battleship (1913)"
Line 61: | Line 61: | ||
* Local control from officer's position within turret | * Local control from officer's position within turret | ||
− | + | In 1915, the 6-in guns on ''Queen Elizabeth'' were divided into 3 groups on each broadside: | |
+ | # 3 guns | ||
+ | # 3 guns | ||
+ | # 2 guns | ||
+ | but this was soon to change along with a pattern already established in ''Warspite'': removal of number 3 group, returning 2 guns and moving the others to the foredeck, presumably with some or total loss in fire control cohesion for that weapon.<ref>''Annual Report of the Torpedo School, 1915'', pp. 226-7.</ref> | ||
===Directors=== | ===Directors=== |
Revision as of 19:03, 4 October 2009
Rate of Turn
Compiled by the late Mr. Bill Schleihauf.[Permission Needed for Publication]
Speed @ Rudder Angle-----Advance for 90 deg-----Tact Diameter
14 kts @ 12.5 degrees--------752 yards------------824 yards
14 kts @ 35.0 degrees--------537 yards------------475 yards
Speed after turning through X degrees:
Speed @ Rudder Angle-----45deg-----90deg-----135deg----180deg
14 kts @ 25deg-----------13.6 kts--12.4 kts--11.5 kts--11.3 kts
14 kts @ 35deg-----------11.9 kts---9.0 kts---6.8 kts---5.5 kts
23 kts @ 35deg-----------19.5 kts--15.6 kts--11.4 kts---9.7 kts
Time to turn through X degrees:
Speed @ Rudder Angle-----45deg-----90deg-----135deg----180deg----360deg
14 kts @ 12.5deg---------1m 18s----1m 59s----2m 45s----3m 35s----7m 04s
14 kts @ 35deg-----------0m 53s----1m 27s----2m 08s----2m 57s----6m 41s
23 kts @ 35deg-----------0m 37s----0m 57s----1m 19s----1m 48s----3m 51s
Fire Control
Rangefinders
Evershed Bearing Indicators
All 5 units were likely fitted with this equipment before late 1914.[Inference][1]
Details likely resembled those for the King George V class.
Mechanical Aid-to-Spotter
At some point, all ships in this class were equipped with four Mark II Mechanical Aid-to-Spotters:
- one on each side of the foretop, driven by flexible shafting from the Evershed rack on the director
- one on each side of the Gun Control Tower employing an electrical F.T.P. system.
As the need for such gear was apparently first identified in early 1916, it seems likely that these installations were effected well after Jutland.[2]
Gunnery Control
The control arrangements were almost certainly developed along lines similar to the King George V class, outlined here as follows.[Inference]
Control Positions
- Gunnery control tower
- 'B' turret
- 'X' turret
Control Groups
The four 15-in turrets were each a separate group with a local C.O.S. so that it could be connected to
- Transmitting Station
- Local control from officer's position within turret
In 1915, the 6-in guns on Queen Elizabeth were divided into 3 groups on each broadside:
- 3 guns
- 3 guns
- 2 guns
but this was soon to change along with a pattern already established in Warspite: removal of number 3 group, returning 2 guns and moving the others to the foredeck, presumably with some or total loss in fire control cohesion for that weapon.[3]
Directors
Main Battery
These ships were fitted with 2 cam-type tripod-mounted directors, one in an armoured tower and one in a light aloft tower,[4] as well as a directing gun (in 'X' turret?).[5]
The main battery was divisible into two groups, fore ('A' & 'B') and aft ('X' & 'Y').[6] A C.O.S. in the TS offered the following options:[7]
- All guns on aloft director
- All guns on armoured director
- All guns on directing gun
- Forward group on aloft director, aft group on armoured director
- Forward group on armoured director, aft group on directing gun
Each gun had a local C.O.S. with 3 positions:
- Gunlayer's firing (local trigger circuits connected)
- Director 1 (director main to local main, director aux to local aux)
- Director 2 (director main to local aux, director aux to local main)
Secondary Battery
All units except Queen Elizabeth had a pair of pedestal-mounted directors for their secondary batteries. Queen Elizabeth's 6-in guns were supported by a pair of tripod-mounted directors.[8]
The secondary directors were situated port and starboard high on her forward superstructure.[9] The broadside-mounted secondary guns were in port and starboard groups, and either were laid and fired locally or under the control of the director on their side.
Torpedo Control
Transmitting Stations
Following evolutionary lines of development which were firming up in the King George V class, these ships probably had a TS for the main battery (with a Dreyer Table), and one for the 6-in guns (likely without a Dreyer table, or just a Turret Control Table).[Inference]
Dreyer Table
Each ships had a Mark IV* Dreyer Table, although it is possible that Queen Elizabeth was originally given a Mark IV Dreyer Table which was later upgraded to the Mark IV* standard.[10]
Each ship also had 4[Inference] Dreyer Turret Control Tables.[11]
Fire Control Instruments
Continuing the pattern established in the Colossus class, all 5 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.[12]
The ships also had Gun Ready signals in the TS and control positions, but had no Target Visible signals.[13]
See Also
Footnotes
- ↑ not listed in pertinent section in Handbook for Fire Control Instruments, 1914
- ↑ The Technical History and Index: Fire Control in HM Ships, 1919, pp. 25-6.
- ↑ Annual Report of the Torpedo School, 1915, pp. 226-7.
- ↑ The Director Firing Handbook, 1917. p. 142
- ↑ The Director Firing Handbook, 1917. p. 88
- ↑ The Director Firing Handbook, 1917. p. 88
- ↑ The Director Firing Handbook, 1917. p. 88
- ↑ The Director Firing Handbook, 1917. p. 143.
- ↑ The Director Firing Handbook, 1917. p. 91.
- ↑ Handbook of Capt. F.C. Dreyer's Fire Control Tables, p. 3.
- ↑ 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:BibUKFireControlInHMShips1919
- 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