Editing Renown-class battlecruiser (section)

===Fire control===
[[File:Bundesarchiv Bild 102-08390, Englisches Schlachtschiff H.M.S. "Repulse".jpg|right|thumb|''Repulse'' firing in 1929]]
The main guns of the ''Renown''-class ships could be controlled from either of the two [[Fire-control system#Naval fire control|fire-control director]]s. The primary director was mounted above the [[conning tower]] in an armoured hood and the other was in the [[Top (sailing ship)|fore-top]] on the foremast.<ref name=rr48/> Data from a [[Rangefinding telemeter|rangefinder]] in the armoured hood was input into a Mk IV* [[Frederic Charles Dreyer#Dreyer Fire Control Table|Dreyer Fire Control Table]] located in the Transmitting Station (TS) where it was converted into range and deflection data for use by the guns. The target's data was also graphically recorded on a plotting table to assist the gunnery officer in predicting the movement of the target.<ref>Brooks, p. 170.</ref> The secondary armament was controlled by directors mounted on platforms on each mast. Each turret was provided with a {{convert|15|ft|m|1|adj=on}} rangefinder in an armoured housing on the turret roof.<ref name=rr48/>

During the war the number and size of rangefinders increased. By 1918 ''Renown'' carried two {{convert|30|ft|m|adj=on|1}} rangefinders, one on "Y" turret and the other in the armoured hood above the conning tower. Fifteen-foot rangefinders were mounted on "A" and "B" turrets, the torpedo control tower abaft the mainmast, and the armoured hood. The fore-top was equipped with a {{convert|12|ft|m|adj=on|1}} rangefinder and the anti-aircraft guns were controlled by a simple {{convert|6|ft|6|in|adj=on}} rangefinder mounted on the aft superstructure. Two {{convert|9|ft|m|adj=on|1}} rangefinders were mounted on the [[bridge (nautical)|bridge]].<ref name=b97/>