Editing Courageous-class battlecruiser (section)

=== Armament ===
The ''Courageous''-class ships mounted four [[BL 15 inch Mk I naval gun|BL 15-inch Mark I]] guns in two twin hydraulically powered Mark I turrets, one each fore (designated the 'A' turret) and aft (the 'Y' turret).<ref name=b06/> These turrets were originally intended for a {{sclass|Revenge|battleship|2}} that was canceled shortly after the war began.<ref>Burt, pp. 291, 308.</ref> The guns could be depressed to −3° and elevated to 20°; they could be loaded at any angle up to 20°, although loading at high angles tended to slow the gun's return to battery (firing position). The ships carried 120 shells per gun. They fired {{convert|1910|lb|kg|adj=on|0}} projectiles at a [[muzzle velocity]] of {{convert|2575|ft/s|m/s|abbr=on}}; this provided a maximum range of {{convert|23734|yd|abbr=on|0}} with [[Armor-piercing shot and shell|armour-piercing]] shells.<ref>{{cite web | url = http://www.navweaps.com/Weapons/WNBR_15-42_mk1.htm | title = British 15"/42 (38.1 cm) Mark I | date = 1 April 2010 | access-date = 4 May 2010 | publisher = NavWeaps.com }}</ref>

[[File:HMS Furious-1.jpg|thumb|''Furious'' had a single 18-inch gun fitted]]
The ''Courageous''-class ships were designed with 18 [[BL 4 inch Mk IX naval gun|BL 4-inch Mark IX guns]], fitted in six triple mounts. These were manually powered and quite cumbersome in use as they required a crew of thirty-two men to load and train the guns. The gun's rate of fire was only 10 to 12 rounds per minute as the loaders kept getting in each other's way. They had a maximum depression of −10° and a maximum elevation of 30°. They fired a {{convert|22|lb|kg|adj=on}} [[Explosive material#High explosives|high explosive]] shell at a muzzle velocity of {{convert|2625|ft/s|m/s|abbr=on}}. At maximum elevation the guns had a maximum range of {{convert|13500|yd|m|0}}.<ref>{{cite web | url = http://www.navweaps.com/Weapons/WNBR_4-45_mk9.htm | title = Britain 4"/45 (10.2 cm) BL Marks IX and X | date = 25 January 2010 | access-date = 7 May 2010 | publisher = NavWeaps.com | archive-url = https://web.archive.org/web/20120217005213/http://navweaps.com/Weapons/WNBR_4-45_mk9.htm | archive-date = 17 February 2012 | url-status = dead }}</ref> The ships carried 120 rounds for each gun.<ref name=b06/>

Each ship mounted a pair of [[QF 3 inch 20 cwt]]<ref group="Note">"cwt" is the abbreviation for [[hundredweight]], 30 cwt referring to the weight of the gun.</ref> [[Anti-aircraft warfare|anti-aircraft]] guns on single high-angle Mark II mountings. These were mounted abreast the mainmast in the ''Courageous''-class ships and before the funnel on ''Furious''.<ref name=b06/> The gun had a maximum depression of 10° and a maximum elevation of 90°. It fired a {{convert|12.5|lb|kg|adj=on}} shell at a muzzle velocity of {{convert|2500|ft/s|m/s|abbr=on}} at a rate of fire of 12–14 rounds per minute. They had a maximum effective ceiling of {{convert|23500|ft|m|abbr=on}}.<ref>{{cite web | url = http://www.navweaps.com/Weapons/WNBR_3-45_mk1.htm | title = British 12-pdr <nowiki>[3"/45 (76.2 cm)]</nowiki> 20 cwt QF HA Marks I, II, III and IV | date = 27 February 2007 | access-date = 11 November 2009 | publisher = NavWeaps.com }}</ref> All three ships carried ten [[torpedo]]es and mounted two [[British 21 inch torpedo|{{convert|21|in|adj=on|0}}]] submerged side-loading [[torpedo tube]]s fitted near 'A' turret. They were loaded and traversed by hydraulic power, but fired by compressed air.<ref>Roberts, p. 83.</ref>

The [[BL 18 inch Mk I naval gun|18-inch BL Mark I gun]] carried by ''Furious'' was derived from the 15-inch Mark I gun used in her half-sisters. It was intended to be mounted in two single-gun turrets derived from the twin-gun 15-inch Mark I/N turret, and her barbettes were designed to accommodate either turret in case problems arose with the 18-inch gun's development, but only one turret was actually fitted. The gun could depress to −3° and elevate to a maximum of 30°. It fired a {{convert|3320|lb|kg|adj=on}}, 4 [[List of British ordnance terms#C.R.H.|crh]] [[Armor-piercing shot and shell|armour-piercing, capped]] shell at a [[muzzle velocity]] of {{convert|2270|ft/s|m/s|abbr=on}} to a distance of {{convert|28900|yd|m}}. It could fire one round per minute and the ship carried sixty rounds of ammunition. The turret's revolving mass was {{convert|826|LT|0}}, only slightly more than the {{convert|810|LT|0}} of its predecessor.<ref>{{cite web | url = http://www.navweaps.com/Weapons/WNBR_18-40_mk1.htm | title = British 18"/40 (45.7 cm) Mark I | date = 22 October 2009 | access-date = 10 May 2010 | publisher = NavWeaps.com }}</ref>

''Furious''{{'}}s secondary armament consisted of 11 BL 5.5-inch Mk I guns. The guns had a maximum elevation of 25° on their pivot mounts. They fired {{convert|82|lb|kg|adj=on}} projectiles at a muzzle velocity of {{convert|2790|ft/s|m/s|abbr=on}} at a rate of 12 rounds per minute. Their maximum range was {{convert|16000|yd|m|abbr=on}} at 25° elevation.<ref name=nav>{{cite web | url = http://www.navweaps.com/Weapons/WNBR_55-50_mk1.htm | title = British 5.5"/50 (14 cm) BL Mark I | date = 23 January 2009 | access-date = 7 May 2010 | publisher = NavWeaps.com }}</ref>