Revenge-class battleship

Royal Sovereign at Philadelphia, September 1943
Class overview
Name	Revenge class
Operators	Royal Navy  Soviet Navy
Preceded by	Queen Elizabeth class
Succeeded by	N3 class (planned) Nelson class (actual)
Built	1913–1917
In commission	1916–1949
Planned	8
Completed	5
Cancelled	3
Lost	1
Retired	4
General characteristics (as built)
Type	Dreadnought battleship
Displacement	29,590 long tons (30,060 t) 32,820 long tons (33,350 t) (Deep load)
Length	620 ft 7 in (189.2 m)
Beam	88 ft 6 in (27 m)
Draught	33 ft 7 in (10.2 m) (Deep load)
Installed power	18 Babcock & Wilcox boilers 40,000 shp (30,000 kW)
Propulsion	4 shafts; 2 steam turbine sets
Speed	21 knots (39 km/h; 24 mph)
Range	7,000 nmi (13,000 km; 8,100 mi) at 10 knots (19 km/h; 12 mph)
Crew	940 (1917)
Armament	4 × twin 15 in (381 mm) guns 14 × single 6 in (152 mm) guns 2 × single 3 in (76 mm) AA guns 4 × single 47 mm (1.9 in) 3-pdr guns 4 × 21 in (533 mm) torpedo tubes
Armour	Waterline belt: 13 in (330 mm) Deck: 1–4 in (25–102 mm) Barbettes: 6–10 in (152–254 mm) Gun turrets: 11–13 in (279–330 mm) Conning tower: 3–11 in (76–279 mm) Bulkheads: 4 to 6 in (102 to 152 mm)

The Revenge class, sometimes referred to as the Royal Sovereign class or the R class, consisted of five Dreadnought battleships built for the Royal Navy in the 1910s. All of the ships were completed to see service during the First World War. There were originally to have been eight of the class, but two were later redesigned, becoming the Renown-class battlecruisers, while the other, which was to have been named HMS Resistance, was cancelled outright. The design was based on that of the preceding Queen Elizabeth class, but with reductions in size and speed to make them more economical to build.

Two of the ships, Revenge and Royal Oak, were completed in time to see action at the Battle of Jutland during the First World War, where they engaged German battlecruisers. The other three ships were completed after the battle, by which time the British and German fleets had adopted more cautious strategies, and as a result, the class saw no further substantial action. During the early 1920s, the ships were involved in the Greco-Turkish War and the Russian Civil War as part of the Mediterranean Fleet. They typically operated as a unit during the interwar period, including stints in the Atlantic Fleet. All five members of the class were modernised in the 1930s, particularly to strengthen their anti-aircraft defences and fire-control equipment.

The ships saw extensive action during the Second World War, though they were no longer front-line units by this time and thus were frequently relegated to secondary duties such as convoy escort and naval gunfire support. Royal Oak was sunk at her moorings in Scapa Flow in October 1939 by a German U-boat, and two other ships of the class were torpedoed during the war; Resolution, hit by a Vichy French submarine off Dakar in 1940 and Ramillies, attacked by a Japanese submarine in Madagascar in 1943; both survived. Royal Sovereign ended the war in service with the Soviet Navy as Arkhangelsk, but she was returned in 1949, by which time her three surviving sister ships had been broken up for scrap. She, too, was dismantled that year.