HMS ''Samarang'' was a 28-gun,

teak Teak (''Tectona grandis'') is a tropical hardwood tree species in the family Lamiaceae. It is a large, deciduous tree that occurs in mixed hardwood forests. ''Tectona grandis'' has small, fragrant white flowers arranged in dense clusters ( pan ...

sixth rate In the rating system of the Royal Navy used to categorise sailing warships, a sixth-rate was the designation for small warships mounting between 20 and 28 carriage-mounted guns on a single deck, sometimes with smaller guns on the upper works a ...

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 ...

. She was launched at

Cochin Kochi (), also known as Cochin ( ) ( the official name until 1996) is a major port city on the Malabar Coast of India bordering the Laccadive Sea, which is a part of the Arabian Sea. It is part of the district of Ernakulam in the state of K ...

in 1822 by the

East India Company The East India Company (EIC) was an English, and later British, joint-stock company founded in 1600 and dissolved in 1874. It was formed to trade in the Indian Ocean region, initially with the East Indies (the Indian subcontinent and South ...

. The first application of

cathodic protection Cathodic protection (CP; ) is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell. A simple method of protection connects the metal to be protected to a more easily corroded "sacrific ...

was to HMS ''Samarang'' in 1824. Sacrificial anodes made from

iron Iron () is a chemical element with Symbol (chemistry), symbol Fe (from la, Wikt:ferrum, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 element, group 8 of the periodic table. It is, Abundanc ...

attached to the

copper sheathing Copper sheathing is the practice of protecting the under-water hull of a ship or boat from the corrosive effects of salt water and biofouling through the use of copper plates affixed to the outside of the hull. It was pioneered and developed by ...

of the hull below the waterline dramatically reduced the corrosion rate of the copper. However, a side effect of the cathodic protection was to increase

marine growth 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 ...

. Copper, when corroding, releases copper ions which have an

anti-fouling 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 ...

effect. Since excess marine growth affected the performance of the ship, the

decided that it was better to allow the copper to corrode and have the benefit of reduced marine growth, so cathodic protection was not used further. ''Samarang'' served in various stations around the world until seeing action in the First Opium War, and was then employed, under

Edward Belcher Admiral Sir Edward Belcher (27 February 1799 – 18 March 1877) was a British naval officer, hydrographer, and explorer. Born in Nova Scotia, he was the great-grandson of Jonathan Belcher, who served as a colonial governor of Massachusett ...

, in surveying the coasts of the

East Indies The East Indies (or simply the Indies), is a term used in historical narratives of the Age of Discovery. The Indies refers to various lands in the East or the Eastern hemisphere, particularly the islands and mainlands found in and around ...

and southern China from 1843 to 1846. On 17 July 1843, she struck a rock in the Sarawak river at Kuching and

capsize Capsizing or keeling over occurs when a boat or ship is rolled on its side or further by wave action, instability or wind force beyond the angle of positive static stability or it is upside down in the water. The act of recovering a vessel fro ...

d, but her crew survived; she had been refloated by 13 August and was returned to service. English zoologist Arthur Adams, who was assistant surgeon on the ship for this voyage later edited ''Zoology of the voyage of H.M.S. Samarang'' (1850), an account of the survey. She later became a

guardship A guard ship is a warship assigned as a stationary guard in a port or harbour, as opposed to a coastal patrol boat, which serves its protective role at sea. Royal Navy In the Royal Navy of the eighteenth century, peacetime guard ships were usua ...

Gibraltar ) , anthem = " God Save the King" , song = " Gibraltar Anthem" , image_map = Gibraltar location in Europe.svg , map_alt = Location of Gibraltar in Europe , map_caption = United Kingdom shown in pale green , mapsize = , image_map2 = Gib ...

before being sold for breaking in 1883.National Maritime Museum
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References

External links

* {{DEFAULTSORT:Samarang (1822) 1822 ships Atholl-class corvettes First Opium War ships of the United Kingdom Ships built in India Maritime incidents in July 1843