Bretagne Class Battleship (1913)

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In 1916, the British noted that these ships were equipped with anti-torpedo nets.[1]

Overview of 3 vessels
Citations for this data available on individual ship pages
Name Builder Laid Down Launched Completed Fate
Bretagne 1913
Lorraine 1913
Provence 1913


Main Battery

  • five double 340mm 45cal guns, arranged on the centreline

An American observer was impressed that a single man could train the turret, as opposed to six to eight men needed in American ships.[2]

Secondary Battery

  • twenty-two 138mm 55cal guns in casemates

Other Guns

  • four 47mm guns


  • four 18-in submerged tubes

Fire Control


The Americans reported use of 15 foot Barr & Stroud rangefinders in triplex mountings.[2]

Gunnery Control

The ships used a "cascade system", where the Post Centrale transmitted only to elevated fore and aft turrets, who then relayed the data to the neighboring, lower turrets. In the event that the P.C. failed to send data, the receiving turrets would function as their own mini-P.Cs. and send their data to the lower turrets.[2]

Control Positions

Control Groups


The ships had no director firing until after World War I.

Torpedo Control

Transmitting Stations

An American naval observer reported that Bretagne had 17 men in her Post Centrale.[2]

Fire Control Instruments


See Also


  1. Annual Report of the Torpedo School, 1916. p. 118.
  2. 2.0 2.1 2.2 2.3 Lt. Cdr. [[Herbert Fairfax Leary|Herbert F. Leary}}, quoted in G.B. 436 Investigation, 16 October, 1917.


  • Robert Dumas. The French Dreadnoughts: The 23,500 ton Bretagne Class in Warship, Volume X Issues 38-9.

Bretagne Class Dreadnought
  Bretagne Lorraine Provence  
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