The design of the Bellerophon class was derived from that of the revolutionary battleship HMS Dreadnought, with a slight increase in size, armour and a more powerful secondary armament. Superb had an overall length of 526 feet (160.3 m), a beam of 82 feet 6 inches (25.1 m), and a normal draught of 27 feet (8.2 m). She displaced 18,596 long tons (18,894 t) at normal load and 22,359 long tons (22,718 t) at deep load. In 1914 her crew numbered 840 officers and ratings.
Superb was powered by two sets of Parsons direct-drive steam turbines, each driving two shafts, using steam from eighteen Yarrow boilers. The turbines were rated at 23,000 shaft horsepower (17,000 kW) and intended to give the ship a maximum speed of 21 knots (39 km/h; 24 mph). During her sea trials on 2 April 1909, she reached a top speed of 21.56 knots (39.93 km/h; 24.81 mph) from 27,407 shp (20,437 kW). Superb had a range of 5,720 nautical miles (10,590 km; 6,580 mi) at a cruising speed of 10 knots (19 km/h; 12 mph).
The Bellerophon class was equipped with ten breech-loading (BL) 12-inch (305 mm) Mk X guns in five twin-gun turrets, three along the centreline and the remaining two as wing turrets. The centreline turrets were designated 'A', 'X' and 'Y', from front to rear, and the port and starboard wing turrets were 'P' and 'Q' respectively. The secondary, or anti-torpedo boat armament, comprised 16 BL 4-inch (102 mm) Mk VII guns. Two of these guns were each installed on the roofs of the fore and aft centreline turrets and the wing turrets in unshielded mounts, and the other eight were positioned in the superstructure. All secondary guns were in single mounts. The ships were also fitted with three 18-inch (450 mm) torpedo tubes, one on each broadside and the third in the stern, and four 3-pounder (1.9 in (47 mm)) saluting guns.
The Bellerophon-class ships had a waterline belt of Krupp cemented armour that was 10 inches (254 mm) thick between the fore and aftmost barbettes, reducing to a thickness of 6 inches (152 mm) forward and 5 inches (127 mm) aft before it reached the ships' ends. Above this was a strake of armour 8 inches (203 mm) thick. A oblique bulkhead 8 inches thick connected the thickest parts of the waterline and upper armour belts to the rear barbette; there was no forward equivalent.
The three centreline barbettes were protected by armour 9 inches (229 mm) thick above the main deck that thinned to 5 inches (127 mm) below it, except for the rear barbette which was 9 inches thick for its entire height. The wing barbettes were similar except that they had 10 inches of armour on their outer faces. The gun turrets had 11-inch (279 mm) faces and sides with 3-inch (76 mm) roofs. The three armoured decks ranged in thicknesses from .75 to 4 inches (19 to 102 mm). The front and sides of the forward conning tower were protected by 11-inch plates, although the rear and roof were 8 inches and 3 inches thick, respectively. The aft conning tower had 8-inch sides and a 3-inch roof. The ships were the first British dreadnoughts to be provided with an anti-torpedo bulkhead, .75 to 3 inches (19 to 76 mm) thick, that covered the sides of the hull between the fore and aft magazines.
The guns on the forward turret roof were transferred to the superstructure in 1914 and the guns from the wing turrets were remounted in the aft superstructure in 1914–1915; all of the four-inch guns in the superstructure were enclosed to better protect their crews. In addition, a single three-inch (76 mm) anti-aircraft (AA) gun was added on the former searchlight platform between the aft turrets. Shortly afterwards, the guns on the aft turret were removed as were one pair from the superstructure. Around the same time another three-inch AA gun was added to the aft turret roof.
By May 1915, a fire-control director had been installed high on the forward tripod mast and approximately 23 long tons (23 t) of additional deck armour was added after the Battle of Jutland a year later. By April 1917, Superb had exchanged the three-inch AA gun on 'Y' turret for a four-inch gun and the stern torpedo tube had been removed. In 1918 a high-angle rangefinder was fitted, the starboard aft four-inch gun was removed and the four-inch AA gun was moved to the quarterdeck. By this time, the ship mounted 11 four-inch guns, plus one three- and one four-inch AA gun. After the war ended, both AA guns were removed.
Superb was the eighth ship of her name to serve in the Royal Navy. The ship was ordered on 26 December 1906 and was laid down by Armstrong Whitworth at their shipyard in Elswick on 6 February 1907. She was launched on 7 November and completed in May 1909. Including her armament, her cost is variously quoted at £1,676,529 or £1,641,114. Superb was commissioned on 29 May 1909 and assigned to the 1st Division of the Home Fleet. She was commanded by Captain Frederick Tudor and the ship was reviewed by King Edward VII and Tsar Nicholas II of Russia during Cowes Week on 31 July. The ship participated in fleet manoeuvres in April and July before beginning a refit in late 1910 at Portsmouth. Superb participated in the combined exercises for the Mediterranean, Home and Atlantic Fleets in January 1911 and was present during the Coronation Fleet Review for King George V at Spithead on 24 June. On 1 May 1912, the 1st Division was renamed the 1st Battle Squadron (BS). The ship was present in the Parliamentary Naval Review on 9 July at Spithead and then participated in manoeuvres in October. In July 1913, the squadron visited Cherbourg, France.
Superb took part in a test mobilisation and fleet review between 17 and 20 July 1914 as part of the British response to the July Crisis. Arriving in Portland on 27 July, she was ordered to proceed with the rest of the Home Fleet to Scapa Flow two days later to safeguard the fleet from a possible German surprise attack. In August, following the outbreak of World War I, the Home Fleet was reorganised as the Grand Fleet, and placed under the command of Admiral John Jellicoe. On the evening of 22 November, the Grand Fleet conducted a fruitless sweep in the southern half of the North Sea, during which Superb stood with the main body in support of Vice-Admiral David Beatty's 1st Battlecruiser Squadron. The fleet was back in port in Scapa Flow by 27 November. The 1st BS cruised north-west of the Shetland Islands and conducted gunnery practice on 8–12 December. Four days later, the Grand Fleet sortied during the German raid on Scarborough, Hartlepool and Whitby, but failed to make contact with the High Seas Fleet. Superb and the rest of the Grand Fleet conducted another sweep of the North Sea on 25–27 December.
The ship departed Scapa Flow to have her turbines repaired at Portsmouth on 18 January 1915 and rejoined her squadron on 11 March. On 16–19 March, the Grand Fleet conducted a sweep in the northern North Sea, during which it conducted training manoeuvres. On 11 April, the Grand Fleet conducted a patrol in the central North Sea and returned to port on 14 April; another patrol in the area took place on 17–19 April, followed by gunnery drills off the Shetlands on 20–21 April. It conducted further sweeps into the central North Sea on 17–19 May and 29–31 May without encountering any German vessels. During 11–14 June, the fleet conducted gunnery practice and battle exercises west of the Shetlands and more training off the Shetlands beginning on 11 July. On 2–5 September, the fleet went on another cruise in the northern end of the North Sea and conducted gunnery drills. Throughout the rest of the month, the Grand Fleet conducted numerous training exercises. The ship, together with the majority of the Grand Fleet, conducted another sweep into the North Sea from 13 to 15 October. Almost three weeks later, Superb participated in another fleet training operation west of Orkney during 2–5 November. Five days later, the ship was transferred to the 4th Battle Squadron.
The fleet departed for a cruise in the North Sea on 26 February 1916; Jellicoe had intended to use the Harwich Force of cruisers and destroyers to sweep the Heligoland Bight, but bad weather prevented operations in the southern North Sea. As a result, the operation was confined to the northern end of the sea. Another sweep began on 6 March, but had to be abandoned the following day as the weather grew too severe for the escorting destroyers. On the night of 25 March, Superb and the rest of the fleet sailed from Scapa Flow to support Beatty's battlecruisers and other light forces raiding the German Zeppelin base at Tondern. By the time the Grand Fleet approached the area on 26 March, the British and German forces had already disengaged and a strong gale threatened the light craft, so the fleet was ordered to return to base. On 21 April, the Grand Fleet conducted a demonstration off Horns Reef to distract the Germans while the Imperial Russian Navy relaid its defensive minefields in the Baltic Sea. The fleet returned to Scapa Flow on 24 April and refuelled before proceeding south in response to intelligence reports that the Germans were about to launch a raid on Lowestoft, but only arrived in the area after the Germans had withdrawn. On 2–4 May, the fleet conducted another demonstration off Horns Reef to keep German attention focused on the North Sea. When the dreadnought Emperor of India began a refit later that month, she was relieved by Superb as the flagship of the 3rd Division of the 4th BS, commanded by Rear-Admiral Alexander Duff.
In an attempt to lure out and destroy a portion of the Grand Fleet, the High Seas Fleet, composed of 16 dreadnoughts, 6 pre-dreadnoughts, and supporting ships, departed the Jade Bight early on the morning of 31 May. The fleet sailed in concert with Rear Admiral Franz von Hipper's 5 battlecruisers. The Royal Navy's Room 40 had intercepted and decrypted German radio traffic containing plans of the operation. In response the Admiralty ordered the Grand Fleet, totalling some 28 dreadnoughts and 9 battlecruisers, to sortie the night before to cut off and destroy the High Seas Fleet.
On 31 May, Superb, now under the command of Captain Edmond Hyde Parker, was the eleventh ship from the head of the battle line after deployment. During the first stage of the general engagement, the ship opened fire with her main guns at 18:26 at the crippled light cruiser SMS Wiesbaden, claiming several hits. At 19:17, the ship fired seven salvos at the battlecruiser SMS Derfflinger, but did not make any hits. This was the last time that the ship fired her guns during the battle. She received no damage and fired a total of 54 twelve-inch shells (38 high explosive and 16 common pointed, capped) during the battle.
The Grand Fleet sortied on 18 August to ambush the High Seas Fleet while it advanced into the southern North Sea, but a series of miscommunications and mistakes prevented Jellicoe from intercepting the German fleet before it returned to port. Two light cruisers were sunk by German U-boats during the operation, prompting Jellicoe to decide to not risk the major units of the fleet south of 55° 30' North due to the prevalence of German submarines and mines. The Admiralty concurred and stipulated that the Grand Fleet would not sortie unless the German fleet was attempting an invasion of Britain or there was a strong possibility it could be forced into an engagement under suitable conditions.
In October 1918, Superb and her sister ship, Temeraire, were transferred to the Mediterranean Fleet and Superb became the flagship of its commander, Vice-Admiral Sir Somerset Gough-Calthorpe, upon her arrival at Mudros on 31 October. The ship led an Allied squadron that entered the Ottoman capital, Constantinople, on 13 November, following the Armistice of Mudros. A month later, Gough-Calthorpe tasked Superb to provide a crew for the Russian destroyer Derzky, which had been turned over to the Allies by the Germans after the Armistice of 11 November. On 4 December, the ship conveyed Gough-Calthorpe to Odessa, Russia, to inspect the situation there; he made another such visit to Port Said, Egypt, in late March 1919.
The following month, she was relieved and sailed for England, and was reduced to reserve at Sheerness upon her arrival on 26 April. Superb became a gunnery training ship in September, until she was relieved of that duty in December. The ship was listed for disposal on 26 March 1920 at the Nore and was used for gunnery experiments in December. Beginning in May 1922, she was used as a target ship through the autumn. In December, she was sold to Stanlee Shipbreaking Company, but was not towed to Dover for demolition until 7 April 1923.