Броненосец «Аженкур» и класс «Минотавр» британского флота.

Minotaur class armoured frigate of the Royal Navy

HMS Agincourt was a armoured frigate built for the Royal Navy during the 1860s. She spent most of her career as the flagship of the Channel Squadron's second in command. During the Russo Turkish War of 1877–1878, she was one of the ironclads sent to Constantinople to forestall a Russian occupation of the Ottoman capital. Agincourt participated in Queen Victoria's Golden Jubilee Fleet Review in 1887. The ship was placed in reserve two years later and served as a training ship from 1893 to 1909. That year she was converted into a coal hulk and renamed as C.109. Agincourt served at Sheerness until sold for scrap in 1960.

The three Minotaur class armoured frigates were essentially enlarged versions of the ironclad with heavier armament, armour, and more powerful engines. They retained the broadside ironclad layout of their predecessor, but their sides were fully armoured to protect the 50 guns they were designed to carry. Their plough shaped ram was also more prominent than that of Achilles. The ships were 400 feet (122 m) long between perpendiculars and 407 feet (124 m) long overall. They had a beam of 58 feet (18 m) and a draft of 26 feet (8 m). The Minotaur class ships displaced Their hull was subdivided by 15 watertight transverse bulkheads and had a double bottom underneath the engine and boiler rooms. Agincourt was considered "an excellent sea boat and a steady gun platform, but unhandy under steam and practically unmanageable under sail" as built. The ship's steadiness was partially a result of her metacentric height of 3.87 feet (1 m).

Agincourt had one 2 cylinder horizontal return connecting rod steam engine, made by Maudslay, driving a single propeller using steam provided by 10 rectangular fire tube boilers. It produced a total of during the ship's sea trials on 12 December 1865 and Agincourt had a maximum speed of The ship carried of coal, enough to steam at Admiral George A. Ballard described Agincourt and her sisters as "the dullest performers under canvas of the whole masted fleet of their day, and no ships ever carried so much dress to so little purpose." In 1893–1894, after her withdrawal from active service, Agincourt had two masts removed and was re rigged as a barque.

The armament of the Minotaur class ships was intended to be 40 rifled 110 pounder breech loading guns on the main deck and 10 more on the upper deck on pivot mounts. The gun was a new design from Armstrong, but proved a failure a few years after its introduction. The gun was withdrawn before any were received by any of the Minotaur class ships. They were armed, instead, with a mix of and rifled muzzle loading guns. All 4 nine inch and 20 seven inch guns were mounted on the main deck while 4 seven inch guns were fitted on the upper deck as chase guns. The ship also received eight brass howitzers for use as saluting guns. The gun ports were wide which allowed each gun to fire 30° fore and aft of the beam. Agincourt was rearmed in 1875 with a uniform armament of 17 nine inch guns, 14 on the main deck, 2 forward chase guns and 1 rear chase gun. The gun ports had to be enlarged to accommodate the larger guns by hand, at a cost of £250 each. About 1883 two breech loading guns replaced 2 nine inch muzzle loading guns. Four quick firing (QF) 4.7 inch (120 mm) guns, eight QF 3 pounder Hotchkiss guns, eight machine guns and two torpedo tubes were installed in 1891–1892.

The entire side of the Minotaur class ships was protected by wrought iron armour that tapered from at the ends to amidships, except for a section of the bow between the upper and main decks. The armour extended 5 feet (2 m) below the waterline. A single 5.5 inch transverse bulkhead protected the forward chase guns on the upper deck. The armour was backed by of teak. was originally ordered on 2 September 1861 as HMS Captain, but her name was changed during construction. She was laid down on 30 October 1861 by Laird's at its shipyard in Birkenhead. The ship was launched on 27 March 1865, commissioned in June 1868 for sea trials and completed on 19 December. The lengthy delay in completion was due to frequent changes in design details, and experiments with her armament and with her sailing rig. The ship cost a total of £483,003. Agincourts first assignment, together with her half sister , was to tow a floating drydock from England to Madeira where it would be picked up by and and taken to Bermuda. The ships departed the Nore on 23 June 1869, loaded down with of coal stowed in bags on their gun decks, and transferred the floating dock 11 days later after an uneventful voyage. Agincourt was assigned to the Channel Squadron upon her return and she became the flagship of the second in command of the fleet until she began a refit in 1873.

It was during this assignment that she suffered a near catastrophe when she ran aground on Pearl Rock, near Gibraltar on 1 July 1871 and nearly sank. Agincourt was leading the inshore column of ships, contrary to normal practice where the senior flagship lead the inshore column, and gently ran aground sideways when the senior flagship's navigator failed to compensate for the set of the tide. Warrior, immediately following her, nearly collided with her, but managed to sheer off in time. Agincourt was stuck fast and had to be lightened; her guns were removed and much of her coal was tossed overboard before she was towed off by , commanded by Lord Gilford, four days later. Heavy weather set in the night after Agincourt was freed and it would have wrecked her if she had still been aground. Both the fleet commander and his deputy were relieved of their commands as a result of the incident. The ship was repaired in Devonport at a cost of £1,195 and Captain J. O. Hopkins assumed command in September with Commander Charles Penrose Fitzgerald as his executive officer. Hopkins later commented: "We turned the Agincourt from the noisiest and the worst disciplined ship in the squadron into the quietest and the smartest; and a few months after we commissioned we went out to the Mediterranean for the Lord Clyde court martial, and beat the whole Mediterranean fleet in their drills and exercises, which was a great triumph." In 1873, Vice Admiral Sir Geoffrey Hornby, commander of the Channel Squadron, transferred his flag to Agincourt as her sister Minotaur, his former flagship, was taken in hand for a refit that lasted until 1875. That year Agincourt was paid off in turn for a refit and re armament that lasted until 1877. During the Russo Turkish War of 1877–78, the government became concerned that the Russians might advance on the Ottoman capital of Constantinople and ordered Hornby to form a Particular Service Squadron to show the flag at Constantinople and deter any Russian threat. Agincourt served as the flagship for his second in command and the squadron sailed up the Dardanelles in a blinding snowstorm in February 1878. After those tensions faded, the ship returned to the Channel, where she served as second flag until 1889 including during Queen Victoria's Golden Jubilee Fleet Review in 1887. Over her active career, she served as flagship to no fewer than 15 admirals. That year she was again paid off and was subsequently held in reserve at Portsmouth until 1893, when she was transferred to Portland for use as a training ship. Agincourt served twelve years at Portland, as a depot ship for boys. She was renamed Boscawen III in March, 1904. In 1905 she was moved to Harwich and renamed as Ganges II. After four years at Harwich, the ship was towed to Sheerness in 1909. After her arrival the old ship was converted into a coal hulk known simply as C.109. After five ignominious decades as what naval historian Oscar Parkes called "a grimy, dilapidated and incredibly shrunken relic" of her former self, she was scrapped beginning on 21 October 1960.