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Copper Sheathing
Copper sheathing is a method for protecting the hull of a wooden vessel from attack by shipworm, barnacles and other marine growth through the use of copper plates affixed to the surface of the hull, below the waterline. It was pioneered and developed by the Royal Navy during the 18th century. In antiquity, ancient Chinese used copper plates while ancient Greeks used lead plates to protect the underwater hull. Development Deterioration of the hull of a wooden ship was a significant problem during the Age of Sail. Ships' hulls were under continuous attack by shipworm, barnacles and other marine growth, all of which had some adverse effect on the ship, be it structurally, in the case of the worm, or affecting speed and handling in the case of the weeds. The most common methods of dealing with these problems were through the use of wood, and sometimes lead, sheathing. Expendable wood sheathing effectively provided a non-structural skin to the hull for the worm to attack, and could ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cutty Sark Stern
Cutty may refer to: People * Cutty Cutshall, American jazz trombonist Robert Cutshall (1911–1968) * Cutty Ranks, Jamaican dancehall musician Philip Thomas (born 1965) * Cutty (rapper), a rapper featured on T.O.K.'s '' Bombrush Hour'' Other uses * Cutty grass, a common name for several grasses * Dennis "Cutty" Wise, a fictional character on the HBO drama ''The Wire'' See also * Cuddy (other) * Cuttie stool, a Scottish milking stool * Cutty Sark (other) {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulphur
Sulfur (American spelling and the preferred IUPAC name) or sulphur (English in the Commonwealth of Nations, Commonwealth spelling) is a chemical element; it has Symbol (chemistry), symbol S and atomic number 16. It is abundance of the chemical elements, abundant, Polyvalency (chemistry), multivalent and Nonmetal (chemistry), nonmetallic. Under standard conditions for temperature and pressure, normal conditions, sulfur atoms form octasulfur, cyclic octatomic molecules with the chemical formula octasulfur, S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature. Sulfur is the tenth most abundant element by mass in the universe and the fifth most common on Earth. Though sometimes found in pure, native element minerals, native form, sulfur on Earth usually occurs as sulfide minerals, sulfide and sulfate minerals. Being abundant in native form, sulfur was known in ancient times, being mentioned for its uses in Outline of ancient India, ancient India, ancient G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tipu Sultan
Tipu Sultan (, , ''Sultan Fateh Ali Sahab Tipu''; 1 December 1751 – 4 May 1799) commonly referred to as Sher-e-Mysore or "Tiger of Mysore", was a ruler of the Kingdom of Mysore based in South India. He was a pioneer of rocket artillery. He expanded the iron-cased Mysorean rockets and commissioned the military manual ''Fathul Mujahidin''. The economy of Mysore reached a zenith during his reign. He deployed rockets against advances of British forces and their allies during the Anglo-Mysore Wars, including the Battle of Pollilur (1780), Battle of Pollilur and Siege of Srirangapatna (1799), Siege of Srirangapatna. Tipu Sultan and his father Hyder Ali used their French-trained army in alliance with the French in their struggle with the British, and in Mysore's struggles with other surrounding powers: against the Maratha Empire, Marathas, Sira, India, Sira, and rulers of Malabar (Northern Kerala), Malabar, Kodagu district, Kodagu, Keladi Nayaka Kingdom, Bednore, Carnatic regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mysore
Mysore ( ), officially Mysuru (), is a city in the southern Indian state of Karnataka. It is the headquarters of Mysore district and Mysore division. As the traditional seat of the Wadiyar dynasty, the city functioned as the capital of the Kingdom of Mysore for almost six centuries (). Known for its heritage structures, palaces (such as the famous Mysore Palace), and its culture, Mysore has been called the "City of Palaces", the "Heritage City", and the " Cultural capital of Karnataka". It is the second-most populous city in the state and one of the cleanest cities in India according to the Swachh Survekshan. Mysore is situated at the foothills of the Chamundi Hills. At an altitude of above mean sea level, the city of Mysore is geographically located at 12° 18′ 26″ north latitude and 76° 38′ 59″ east longitude. It is about southwest of the state's capital, Bangalore, and spreads across an area of (city and neighbouring census towns). The population of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Revolutionary War
The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was the armed conflict that comprised the final eight years of the broader American Revolution, in which American Patriot (American Revolution), Patriot forces organized as the Continental Army and commanded by George Washington defeated the British Army during the American Revolutionary War, British Army. The conflict was fought in North America, the Caribbean, and the Atlantic Ocean. The war's outcome seemed uncertain for most of the war. However, Washington and the Continental Army's decisive victory in the Siege of Yorktown in 1781 led King George III and the Kingdom of Great Britain to negotiate an end to the war in the Treaty of Paris (1783), Treaty of Paris two years later, in 1783, in which the British monarchy acknowledged the independence of the Thirteen Colonies, leading to the establishment of the United States as an independent and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galvanic Corrosion
Galvanic corrosion (also called bimetallic corrosion or dissimilar metal corrosion) is an electrochemical process in which one metal corrodes preferentially when it is in electrical contact with another, different metal, when both in the presence of an electrolyte. A similar galvanic reaction is exploited in single-use battery cells to generate a useful electrical voltage to power portable devices. This phenomenon is named after Italian physician Luigi Galvani (1737–1798). A similar type of corrosion caused by the presence of an external electric current is called '' electrolytic corrosion''. Overview Dissimilar metals and alloys have different electrode potentials, and when two or more come into contact in an electrolyte, one metal (that is more reactive) acts as anode and the other (that is less reactive) as cathode. The electropotential difference between the reactions at the two electrodes is the driving force for an accelerated attack on the anode metal, which disso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Admiralty
The Admiralty was a Departments of the Government of the United Kingdom, department of the Government of the United Kingdom that was responsible for the command of the Royal Navy. Historically, its titular head was the Lord High Admiral of the United Kingdom, Lord High Admiral – one of the Great Officers of State. For much of its history, from the early Admiralty in the 18th century, 18th century until its abolition, the role of the Lord High Admiral was almost invariably put "in commission" and exercised by the Lords Commissioner of the Admiralty, who sat on the governing Board of Admiralty, rather than by a single person. The Admiralty was replaced by the Admiralty Board (United Kingdom), Admiralty Board in 1964, as part of the reforms that created the Ministry of Defence (United Kingdom), Ministry of Defence and its Navy Department (Ministry of Defence), Navy Department (later Navy Command (Ministry of Defence), Navy Command). Before the Acts of Union 1707, the Office of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper Oxychloride
Dicopper chloride trihydroxide is the compound with chemical formula . It is often referred to as tribasic copper chloride (TBCC), copper trihydroxyl chloride or copper hydroxychloride. This greenish substance is encountered as the minerals atacamite, paratacamite, and botallackite. Similar materials are assigned to green solids formed upon corrosion of various copper objects. These materials have been used in agriculture. Industrial production Air oxidation of copper(I) chloride in brine solution Large scale industrial production of basic copper chloride was devoted to making either a fungicide for crop protection or an intermediate in the manufacture of other copper compounds. In neither of those applications was the polymorphic nature of the compound, or the size of individual particles of particular importance, so the manufacturing processes were simple precipitation schemes. can be prepared by air oxidation of CuCl in brine solution. The CuCl solution is usually made ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Indies
The West Indies is an island subregion of the Americas, surrounded by the Atlantic Ocean, North Atlantic Ocean and the Caribbean Sea, which comprises 13 independent island country, island countries and 19 dependent territory, dependencies in three archipelagos: the Greater Antilles, the Lesser Antilles, and the Lucayan Archipelago. The subregion includes all the islands in the Antilles, in addition to The Bahamas and the Turks and Caicos Islands, which are in the Atlantic Ocean, North Atlantic Ocean. The term is often interchangeable with "Caribbean", although the latter may also include coastal regions of Central America, Central and South American mainland nations, including Mexico, Belize, Honduras, Panama, Colombia, Venezuela, French Guiana, Guyana, and Suriname, as well as the Atlantic Ocean, Atlantic island nation of Bermuda, all of which are geographically distinct from the three main island groups, but culturally related. Terminology The English term ''Indie'' is deri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frigate
A frigate () is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied. The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and maneuverability, intended to be used in scouting, escort and patrol roles. The term was applied loosely to ships varying greatly in design. In the second quarter of the 18th century, what is now generally regarded as the 'true frigate' was developed in France. This type of vessel was characterised by possessing only one armed deck, with an unarmed deck below it used for berthing the crew. Late in the 19th century (British and French prototypes were constructed in 1858), a type of powerful ironclad warships was developed, and because they had a single gun deck, the term 'frigate' was used to describe them. Later developments in ironclad ships rendered the 'frigate' designation obsolete and the term fell out of favour. During the Second World War ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
False Keel
The false keel was a timber, forming part of the hull of a wooden sailing ship. Typically thick for a 74-gun ship in the 19th century, the false keel was constructed in several pieces, which were scarfed together, and attached to the underside of the keel The keel is the bottom-most longitudinal structural element of a watercraft, important for stability. On some sailboats, it may have a fluid dynamics, hydrodynamic and counterbalancing purpose as well. The keel laying, laying of the keel is often ... by iron staples. The false keel was intended to protect the main keel from damage, and also protect the heads of the bolts holding the main keel together. The false keel could easily be replaced when it became damaged. See also * Worm shoe References {{Reflist Sailing ship components Shipbuilding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keel
The keel is the bottom-most longitudinal structural element of a watercraft, important for stability. On some sailboats, it may have a fluid dynamics, hydrodynamic and counterbalancing purpose as well. The keel laying, laying of the keel is often the initial step in constructing a ship. In the British and American shipbuilding traditions, this event marks the beginning date of a ship's construction. Etymology The word "keel" comes from Old English language, Old English , Old Norse , = "ship" or "keel". It has the distinction of being regarded by some scholars as the first word in the English language recorded in writing, having been recorded by Gildas in his 6th century Latin work ''De Excidio et Conquestu Britanniae'', under the spelling ''cyulae'' (he was referring to the three ships that the Saxons first arrived in). is the Latin word for "keel" and is the origin of the term careening, careen (to clean a keel and the hull in general, often by rolling the ship on its side). An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
