HMS Invincible off Plymouth, 1870
History
United Kingdom
Name	Invincible
Builder	Robert Napier and Sons
Laid down	28 June 1867
Launched	29 May 1869
Commissioned	1 October 1870
Renamed	HMS Erebus, 1904; Fisgard II, 1906
Reclassified	Depot ship in 1901 Training ship in 1906
Fate	Sank, 17 September 1914
General characteristics
Class and type	Audacious-class ironclad battleship
Displacement	6,106 long tons (6,204 t)
Length	280 ft (85 m)
Beam	54 ft (16 m)
Draught	22 ft 7 in (6.88 m)
Installed power	4,021 ihp (2,998 kW) 6 × boilers
Propulsion	1 × coal-fired reciprocating steam engine
Speed	Steam: 13.5 knots (25.0 km/h; 15.5 mph) Sail: 10 knots (19 km/h; 12 mph)
Complement	450
Armament	10 × RML 9 in (230 mm) guns 4 × 64 pdr (29 kg) guns
Armour	Belt: 8 in (20 cm) (amidships); 6 in (15 cm) (ends) Central battery: 6–8 in (15–20 cm)

HMS Invincible was a Royal Navy Audacious-class ironclad battleship. She was built at the Napier shipyard and completed in 1870. Completed just 10 years after HMS Warrior, she still carried sails as well as a steam engine.

The Audacious class was armed with ten 9-inch (230 mm) muzzle-loading guns, supported by four 6-inch (150 mm) muzzle loaders. These were located in a broadside pattern over a 59 ft (18 m) two-deck battery amidships—this was the area of the ship least affected by its motion, and made for a very stable gun platform.

For the first year of her career, she was a guardship at Hull, before being replaced by her sister HMS Audacious. She was then transferred to the Mediterranean, where she served until 1886. She was sent to Cadiz in 1873 to prevent ships seized by republicans during the civil war in Spain from leaving harbour. She rejoined the Mediterranean Fleet in 1878 under the command of Captain Lindsay Brine, but her poor state of seamanship attracted the ire of the commander-in-chief, Geoffrey Hornby. In early 1879 Invincible blundered badly, putting two ships at hazard, and Brine was court-martialled. Though acquitted, Brine was relieved by Captain Edmund Fremantle.^[1]

In August 1880, Invincible discovered the dismasted and abandoned Austro-Hungarian barque George Roscovich off Sardinia, Italy. She towed the barque in to Palermo, Sicily, Italy on 5 August.^[2] Invincible was Admiral Seymour's temporary flagship at the 1882 bombardment of Alexandria because his normal one, HMS Alexandra, drew too much to enter the inner harbour.^[3] She provided men for the naval brigade that was subsequently landed and she also provided men for Lord Charles Beresford's naval brigade in the Sudan campaign of 1885.

She made a trip to China in 1886 to carry out a new crew for Audacious before becoming the guardship at Southampton until 1893. Her engines were removed in 1901 when she became a depot ship at Sheerness for a destroyer flotilla. She was renamed HMS Erebus in 1904, a name that she bore until 1906, when she was converted into a training ship at Portsmouth for engineering artificers and was renamed Fisgard II (Audacious had been renamed Fisgard in 1904).

On 17 September 1914, she sank during a storm off Portland Bill with the loss of 21 of her crew of 64. She was being towed from Portsmouth to Scapa Flow where she was to act as a receiving ship for seamen newly mobilised for World War I. She now lies upside down with the bottom of the hull about 164 ft (50 m) below sea level.

HMS Fisgard II is a Designated vessel under schedule 1 of The Protection of Military Remains Act 1986 (Designation of Vessels and Controlled Sites) Order 2012.^[4]

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