HMS ''Ocean'' was the last of the

Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...

's four s to be completed in the mid-1860s. She was originally laid down as a 91-gun

second-rate In the rating system of the Royal Navy used to categorise sailing warships, a second-rate was a ship of the line which by the start of the 18th century mounted 90 to 98 guns on three gun decks; earlier 17th-century second rates had fewer guns ...

ship of the line A ship of the line was a type of naval warship constructed during the Age of Sail from the 17th century to the mid-19th century. The ship of the line was designed for the naval tactic known as the line of battle, which depended on the two colu ...

, and was converted during construction to an

armoured frigate A frigate () is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied somewhat. The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and ...

. The ship spent the bulk of her career on the

China Station The Commander-in-Chief, China was the admiral in command of what was usually known as the China Station, at once both a British Royal Navy naval formation and its admiral in command. It was created in 1865 and deactivated in 1941. From 1831 to 18 ...

and served as

flagship A flagship is a vessel used by the commanding officer of a group of naval ships, characteristically a flag officer entitled by custom to fly a distinguishing flag. Used more loosely, it is the lead ship in a fleet of vessels, typically the fi ...

there for a time. Upon her return to Great Britain in 1872 her hull was found to be partly rotten and she was placed in

reserve Reserve or reserves may refer to: Places * Reserve, Kansas, a US city * Reserve, Louisiana, a census-designated place in St. John the Baptist Parish * Reserve, Montana, a census-designated place in Sheridan County * Reserve, New Mexico, a US vi ...

until she was sold for

scrap Scrap consists of Recycling, recyclable materials, usually metals, left over from product manufacturing and consumption, such as parts of vehicles, building supplies, and surplus materials. Unlike waste, scrap Waste valorization, has monetary ...

in 1882.

Design and description

HMS ''Ocean'' was

long between perpendiculars Length between perpendiculars (often abbreviated as p/p, p.p., pp, LPP, LBP or Length BPP) is the length of a ship along the summer load line from the forward surface of the stem, or main bow perpendicular member, to the after surface of the ster ...

and had a

beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially localized grou ...

of . The ship had a draught of forward and aft. She displaced .Ballard, p. 241 ''Ocean'' had a

metacentric height The metacentric height (GM) is a measurement of the initial static stability of a floating body. It is calculated as the distance between the centre of gravity of a ship and its metacentre. A larger metacentric height implies greater initial stab ...

of which meant that she rolled a lot and was an unsteady gun platform. Her hull was sheathed with

Muntz metal Muntz metal (also known as yellow metal) is an alpha-beta brass alloy composed of approximately 60% copper, 40% zinc and a trace of iron. It is named after George Fredrick Muntz, a metal-roller of Birmingham, England, who commercialised the all ...

to reduce

biofouling Biofouling or biological fouling is the accumulation of microorganisms, plants, algae, or small animals where it is not wanted on surfaces such as ship and submarine hulls, devices such as water inlets, pipework, grates, ponds, and rivers that ...

. Her crew consisted of 605 officers and ratings.

Propulsion

''Ocean'' had a simple horizontal 2-cylinder horizontal return connecting-rod steam engine driving a single propeller shaft using steam was provided by eight rectangular

boiler A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, central h ...

s. The engine produced during the ship's

sea trial A sea trial is the testing phase of a watercraft (including boats, ships, and submarines). It is also referred to as a " shakedown cruise" by many naval personnel. It is usually the last phase of construction and takes place on open water, and ...

s in June 1864 which gave the ship a maximum speed of . ''Ocean'' carried a maximum of of coal, enough to steam at . She was

barque A barque, barc, or bark is a type of sailing ship, sailing vessel with three or more mast (sailing), masts having the fore- and mainmasts Square rig, rigged square and only the mizzen (the aftmost mast) Fore-and-aft rig, rigged fore and aft. Som ...

-rigged with three masts and had a sail area of . Her best speed with the propeller disconnected and under sail alone was .

Yard The yard (symbol: yd) is an English unit of length in both the British imperial and US customary systems of measurement equalling 3 feet or 36 inches. Since 1959 it has been by international agreement standardized as exactly 0.914 ...

s were added to the ship's

mizzenmast The mast of a sailing vessel is a tall spar, or arrangement of spars, erected more or less vertically on the centre-line of a ship or boat. Its purposes include carrying sails, spars, and derricks, and giving necessary height to a navigation ligh ...

by 1866 and ''Ocean'' was given a full

ship rig A full-rigged ship or fully rigged ship is a sailing vessel's sail plan with three or more masts, all of them square-rigged. A full-rigged ship is said to have a ship rig or be ship-rigged. Such vessels also have each mast stepped in three seg ...

which she retained for the rest of her career.

Armament

''Ocean'' was initially armed with twenty-four rifled muzzle-loading guns. Four of these guns were mounted on the upper deck as

chase gun A chase gun (or chaser), usually distinguished as bow chaser and stern chaser, was a cannon mounted in the bow (aiming forward) or stern (aiming backward) of a sailing ship. They were used to attempt to slow down an enemy ship either chasing ( ...

s, two each fore and aft. The 16-

calibre In guns, particularly firearms, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel bore – regardless of how or where the bore is measured and whether the finished bore match ...

seven-inch gun weighed and fired a shell. It was credited with the ability to penetrate of armour.Gardiner, p. 6 In 1867 four of these guns were replaced by rifled muzzle-loaders.Parkes, p. 55 The shell of the 15-calibre eight-inch gun weighed while the gun itself weighed . It had a

muzzle velocity Muzzle velocity is the speed of a projectile (bullet, pellet, slug, ball/shots or shell) with respect to the muzzle at the moment it leaves the end of a gun's barrel (i.e. the muzzle). Firearm muzzle velocities range from approximately to i ...

of and was credited with the ability to penetrate of

wrought iron Wrought iron is an iron alloy with a very low carbon content (less than 0.08%) in contrast to that of cast iron (2.1% to 4%). It is a semi-fused mass of iron with fibrous slag Inclusion (mineral), inclusions (up to 2% by weight), which give it a ...

armour at the muzzle.

Armour

The entire side of the ''Prince Consort''-class ships, from the upper-deck level downwards, was protected by

armour that tapered from amidships to at the ends. The armour extended below the

waterline The waterline is the line where the hull of a ship meets the surface of the water. Specifically, it is also the name of a special marking, also known as an international load line, Plimsoll line and water line (positioned amidships), that indi ...

. One small

conning tower A conning tower is a raised platform on a ship or submarine, often armored, from which an officer in charge can conn the vessel, controlling movements of the ship by giving orders to those responsible for the ship's engine, rudder, lines, and gro ...

was fitted on each side of the upper deck amidships, but these proved to be untenable when the ship's guns were fired. The armour was backed by the sides of the ship which were thick.

Service history

HMS ''Ocean'' was laid down on 23 August 1860 as a wooden two-deck, 90-gun ship of the line by Devonport Dockyard. The Admiralty ordered on 5 June 1861Ballard, p. 240 that she be lengthened , cut down one deck, and converted to an armoured frigate for the price of £298,851. The ship was launched on 19 March 1863 and commissioned in July 1866, but was not completed until 6 September 1866. ''Ocean'' initially served with the Channel Fleet, but she was almost immediately transferred to the Mediterranean, and from there to the Far East; she arrived in

Batavia Batavia may refer to: Historical places * Batavia (region), a land inhabited by the Batavian people during the Roman Empire, today part of the Netherlands * Batavia, Dutch East Indies, present-day Jakarta, the former capital of the Dutch East In ...

(now Jakarta) on 15 October 1867. She was the only armoured ship ever to double the

Cape of Good Hope The Cape of Good Hope ( af, Kaap die Goeie Hoop ) ;''Kaap'' in isolation: pt, Cabo da Boa Esperança is a rocky headland on the Atlantic coast of the Cape Peninsula in South Africa. A common misconception is that the Cape of Good Hope is t ...

under canvas alone.Ballard, p. 125 During this voyage ''Ocean'' set a record in having sailed on 26 August 1867 with cold boilers, the greatest distance ever covered under sail power by a British ironclad.Ballard, p. 124 ''Ocean'' served on the China Station for five years, 1867–1872, without docking once. The ship relieved the old two-decker as station flagship in 1869 when Vice-Admiral

Henry Kellett Vice Admiral Sir Henry Kellett, (2 November 1806 – 1 March 1875) was a British naval officer and explorer. Career Born at Clonacody in Tipperary County, Ireland, on 2 November 1806, Kellett joined the Royal Navy in 1822. He spent three yea ...

took command; a new crew was carried out by and

Captain Captain is a title, an appellative for the commanding officer of a military unit; the supreme leader of a navy ship, merchant ship, aeroplane, spacecraft, or other vessel; or the commander of a port, fire or police department, election precinct, e ...

William Hewett Vice-Admiral Sir William Nathan Wrighte Hewett, (12 August 1834 – 13 May 1888) was a Royal Navy officer and a recipient of the Victoria Cross, the highest award for gallantry in the face of the enemy that can be awarded to British and Common ...

, VC assumed command of the ship. In 1871, ''Ocean'' ran down and sunk a large

Chinese Chinese can refer to: * Something related to China * Chinese people, people of Chinese nationality, citizenship, and/or ethnicity **''Zhonghua minzu'', the supra-ethnic concept of the Chinese nation ** List of ethnic groups in China, people of va ...

junk at

Amoy Xiamen ( , ; ), also known as Amoy (, from Hokkien pronunciation ), is a sub-provincial city in southeastern Fujian, People's Republic of China, beside the Taiwan Strait. It is divided into six districts: Huli, Siming, Jimei, Tong'an, ...

. ''Ocean'' was relieved in turn by in 1872, but drew too much water to pass through the

Suez Canal The Suez Canal ( arz, قَنَاةُ ٱلسُّوَيْسِ, ') is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea to the Red Sea through the Isthmus of Suez and dividing Africa and Asia. The long canal is a popular ...

. The Admiralty therefore ordered that she return home via the Cape of Good Hope using steam. The ship's bottom was very foul and she averaged only 4.5 knots (8.3 km/h) during the voyage. ''Ocean'' had lost a lot of sheathing during her time in the Far East and much of her planking was in a bad state. The ship was therefore relegated to dockyard reserve until sold in 1882.

Footnotes

References

* * * * {{DEFAULTSORT:Ocean (1862) Bulwark-class battleships (1859) Prince Consort-class ironclads Ships built in Plymouth, Devon 1863 ships Victorian-era battleships of the United Kingdom