page_title: Renown-class battlecruiser
section_title: Inter-war service
hierarchical_section_title: Renown-class battlecruiser / Service / Inter-war service
caption_attribution_description: English: HMS Repulse at Vancouver.
context_page_description: The Renown class comprised a pair of battlecruisers built during the First World War for the Royal Navy. They were originally laid down as improved versions of the Revenge-class battleships. Their construction was suspended on the outbreak of war on the grounds they would not be ready in a timely manner. Admiral Lord Fisher, upon becoming First Sea Lord, gained approval to restart their construction as battlecruisers that could be built and enter service quickly. The Director of Naval Construction, Eustace Tennyson-D'Eyncourt, quickly produced an entirely new design to meet Admiral Lord Fisher's requirements and the builders agreed to deliver the ships in 15 months. They did not quite meet that ambitious goal, but they were delivered a few months after the Battle of Jutland in 1916. They were the world's fastest capital ships upon their commissioning.
  Repulse was the only ship of her class to see combat in the First World War when she participated in the Second Battle of Heligoland Bight in 1917.
context_section_description: Repulse began a major refit at Portsmouth on 17 December 1918 intended to drastically improve her armour protection. Her existing 6-inch armour belt was replaced by 9-inch (229 mm) armour plates made surplus by the conversion of the battleship Almirante Cochrane (originally ordered by Chile and purchased after the war began) to the aircraft carrier Eagle. The old armour was fitted between the main and upper decks, above the new armour belt. Additional high-tensile plating was added to the decks over the magazines. The ship's anti-torpedo bulge was deepened and reworked along the lines of that installed on the battleship Ramillies. The bulge covered her hull from the submerged torpedo room to "Y" magazine and the inner compartments of which were filled with crushing tubes. The bulges added 12 feet 8 inches (3.9 m) to her beam and 1 foot 4 inches (0.4 m) to her draught. The refit added about 4,500 long tons (4,600 t) to her displacement and raised her metacentric height to 6.4 feet (2.0 m) at deep load. Three 30-foot rangefinders were also added as well as eight torpedo tubes in twin mounts on the upper deck. Both flying-off platforms were removed.
  When the Grand Fleet was disbanded in April 1919 Renown was assigned to the Battlecruiser Squadron of the Atlantic Fleet. In June she was refitted in preparation for a tour of Canada, Newfoundland and the United States by Edward, the Prince of Wales, and both flying-off platforms were removed. From January to March 1920 Renown was refitted more extensively as a "royal yacht". Her aft 4-inch mounting and both 3-inch AA guns were removed so that extra accommodation and a promenade deck could be built. A large deckhouse was built on the shelter deck between the funnels. The port side housed a squash court while the starboard side was a cinema. The ship sailed in March for Australia and New Zealand with the Prince of Wales and his entourage aboard and made many stops en route. She returned to Portsmouth in October and was placed in reserve in November.
  Renown was recommissioned in September 1921 for a tour of India and Japan by the Prince of Wales and sailed from Portsmouth in October. The ship arrived back in Portsmouth in June 1922 and she was placed in reserve the following month. The ship began a reconstruction that same month along the lines of her sister, although changes were made based on the experiences with Repulse. Renown's main armour belt was removed and a new 9-inch belt was installed, using up the remaining plates left over from Almirante Cochrane as well as new armour, but installed about 3 feet (0.9 m) higher than on Repulse to offset any increase in draught. A strake of tapered armour was fitted underneath the main belt to deflect any shell that dived beneath the water's surface; it was 9-inches thick at top and thinned to 2 inches (51 mm) at the bottom. The ship's deck armour was heavily reinforced adjacent to its machinery spaces and magazines. Two longitudinal bulkheads were added between the upper and main decks that ran from the base of the conning tower to the end of the boiler rooms. The bulges were reworked and based on those used in the Queen Elizabeth-class battleships, although crushing tubes were only used abreast the magazines. The rear triple 4-inch gun mount was replaced. The flying-off platform on "B" turret was reinstated and a high-angle control position (HACP) was added to the fore-top. The pair of 3-inch AA guns and her two single four-inch gun mounts were removed and replaced with four QF four-inch Mark V anti-aircraft guns. They had a maximum depression of -5° and a maximum elevation of 80°. They fired a 31-pound (14 kg) high explosive shell at a muzzle velocity of 2,387 ft/s (728 m/s) at a rate of ten to fifteen rounds per minute. The guns had a maximum ceiling of 31,000 ft (9,400 m), but an effective range of much less. The reconstruction only added 3,500 long tons (3,600 t) to the ship's displacement and three inches to her draught.
  Repulse was recommissioned on 1 January 1921 and joined the Battlecruiser Squadron. In November 1923, Hood, a
caption: Repulse moored at Vancouver during her 1923–1924 world cruise.
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