Gem Class Cruiser (1903)

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The 4 third class cruisers of the Gem Class were completed in 1904 and 1905.

Fire Control

Rangefinders

Evershed Bearing Indicators

This equipment was unlikely to have been fitted for gun or searchlight control.[1] [Fact Check]

Gunnery Control

The ships were hard-wired for Telaupad control. Five Navyphones and fire gongs on flexible cables were to be placed in any convenient position for controlling the armament in whole or in part. Six group officer's navyphones were (also?) provided. The flying bridge housed 4 C.O.S.

Control Positions

Control Groups

Four groupings were possible for the forward guns:

  • The three foremost broadside guns in 2 groups, port and starboard, with forecastle gun as third group.
  • Number 2 and 3 broadside gun in two groups, port and starboard, with Number 1 broadside gun and fore gun as third group.
  • As 1, but with forecastle gun in port group
  • As 1, but with forecastle gun in starboard group

The aft guns had simpler groupings:

  • broadside guns 4 and 5 in 2 groups, port and starboard, quarterdeck gun with port group.
  • Same as above, but quarterdeck gun with starboard group.

Directors

Main Battery

Secondary Battery

Torpedo Control

Transmitting Stations

Dreyer Table

These ships had no fire control tables.[3]

Fire Control Instruments

The ships were equipped for Voicepipe control.[4]

See Also

Footnotes

  1. The Technical History and Index: Fire Control in HM Ships, 1919, p. 29.
  2. Handbook of Fire Control Instruments, 1909, Plate 53.
  3. absent from list in Handbook of Capt. F.C. Dreyer's Fire Control Tables, p. 3.
  4. Handbook for Fire Control Instruments, 1914, p. 67.

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.

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