Greenland is an autonomous constituent country of the Kingdom of Denmark between the Arctic and Atlantic oceans, east of the Canadian Arctic Archipelago. Though physiographically a part of the continent of North America, Greenland has been politically and culturally associated with Europe for more than a millennium; the majority of its residents are Inuit, whose ancestors began migrating from the Canadian mainland in the 13th century settling across the island. Greenland is the world's largest island. Three-quarters of Greenland is covered by the only permanent ice sheet outside Antarctica. With a population of about 56,480, it is the least densely populated territory in the world. About a third of the population live in the capital and largest city; the Arctic Umiaq Line ferry acts as a lifeline for western Greenland, connecting the various cities and settlements. Greenland has been inhabited at intervals over at least the last 4,500 years by Arctic peoples whose forebears migrated there from what is now Canada.
Norsemen settled the uninhabited southern part of Greenland beginning in the 10th century, having settled Iceland to escape persecution from the King of Norway and his central government. These Norsemen would set sail from Greenland and Iceland, with Leif Erikson becoming the first known European to reach North America nearly 500 years before Columbus reached the Caribbean islands. Inuit peoples arrived in the 13th century. Though under continuous influence of Norway and Norwegians, Greenland was not formally under the Norwegian crown until 1262; the Norse colonies disappeared in the late 15th century when Norway was hit by the Black Death and entered a severe decline. Soon after their demise, beginning in 1499, the Portuguese explored and claimed the island, naming it Terra do Lavrador. In the early 18th century, Danish explorers reached Greenland again. To strengthen trading and power, Denmark–Norway affirmed sovereignty over the island; because of Norway's weak status, it lost sovereignty over Greenland in 1814 when the union was dissolved.
Greenland became Danish in 1814, was integrated in the Danish state in 1953 under the Constitution of Denmark. In 1973, Greenland joined the European Economic Community with Denmark. However, in a referendum in 1982, a majority of the population voted for Greenland to withdraw from the EEC, effected in 1985. Greenland contains the world's largest and most northerly national park, Northeast Greenland National Park. Established in 1974, expanded to its present size in 1988, it protects 972,001 square kilometres of the interior and northeastern coast of Greenland and is bigger than all but twenty-nine countries in the world. Greenland is divided into five municipalities – Sermersooq, Qeqertalik and Avannaata. Greenland does not have an independent seat at the United Nations. In 1979, Denmark granted home rule to Greenland, in 2008, Greenlanders voted in favor of the Self-Government Act, which transferred more power from the Danish government to the local Greenlandic government. Under the new structure, in effect since 21 June 2009, Greenland can assume responsibility for policing, judicial system, company law and auditing.
It retains control of monetary policy, providing an initial annual subsidy of DKK 3.4 billion, planned to diminish over time. Greenland expects to grow its economy based on increased income from the extraction of natural resources; the capital, held the 2016 Arctic Winter Games. At 70%, Greenland has one of the highest shares of renewable energy in the world coming from hydropower; the early Norse settlers named the island as Greenland. In the Icelandic sagas, the Norwegian-born Icelander Erik the Red was said to be exiled from Iceland for manslaughter. Along with his extended family and his thralls, he set out in ships to explore an icy land known to lie to the northwest. After finding a habitable area and settling there, he named it Grœnland in the hope that the pleasant name would attract settlers; the Saga of Erik the Red states: "In the summer, Erik left to settle in the country he had found, which he called Greenland, as he said people would be attracted there if it had a favorable name."The name of the country in the indigenous Greenlandic language is Kalaallit Nunaat.
The Kalaallit are the indigenous Greenlandic Inuit people. In prehistoric times, Greenland was home to several successive Paleo-Eskimo cultures known today through archaeological finds; the earliest entry of the Paleo-Eskimo into Greenland is thought to have occurred about 2500 BC. From around 2500 BC to 800 BC, southern and western Greenland were inhabited by the Saqqaq culture. Most finds of Saqqaq-period archaeological remains have been around Disko Bay, including the site of Saqqaq, after which the culture is named. From 2400 BC to 1300 BC, the Independence I culture existed in northern Greenland, it was a part of the Arctic small tool tradition. Towns, including Deltaterrassern
Franklin's lost expedition
Franklin's lost expedition was a British voyage of Arctic exploration led by Captain Sir John Franklin that departed England in 1845 aboard two ships, HMS Erebus and HMS Terror. A Royal Navy officer and experienced explorer, Franklin had served on three previous Arctic expeditions, the latter two as commanding officer, his fourth and last, undertaken when he was 59, was meant to traverse the last unnavigated section of the Northwest Passage. After a few early fatalities, the two ships became icebound in Victoria Strait near King William Island in the Canadian Arctic, in what is today the territory of Nunavut; the entire expedition, comprising 129 men including Franklin, was lost. Pressed by Franklin's wife, Lady Franklin, others, the Admiralty launched a search for the missing expedition in 1848. Prompted in part by Franklin's fame and the Admiralty's offer of a finder's reward, many subsequent expeditions joined the hunt, which at one point in 1850 involved eleven British and two American ships.
Several of these ships converged off the east coast of Beechey Island, where the first relics of the expedition were found, including the graves of three crewmen. In 1854, explorer John Rae, while surveying near the Canadian Arctic coast southeast of King William Island, acquired relics of and stories about the Franklin party from local Inuit. A search led by Francis McClintock in 1859 discovered a note left on King William Island with details about the expedition's fate. Searches continued through much of the 19th century. In 2014, a Canadian search team led by Parks Canada located the wreck of Erebus west of O'Reilly Island, in the eastern portion of Queen Maud Gulf, in the waters of the Arctic archipelago. Two years the Arctic Research Foundation found the wreck of Terror south of King William Island. Research and dive expeditions at the wreck sites are ongoing. In 1981, a team of scientists led by Owen Beattie, a professor of anthropology at the University of Alberta, began a series of scientific studies of the graves and other physical evidence left by Franklin's men on Beechey Island and King William Island.
They concluded that the men buried on Beechey Island most died of pneumonia and tuberculosis, that lead poisoning may have worsened their health, owing to badly soldered cans held in the ships' food stores. It was suggested that the source of this lead may not have been tinned food, but the distilled water systems fitted to the ships. However, studies in 2013 and 2016 suggested that lead poisoning was not a factor, that the crew's ill health may, in fact, have been due to malnutrition – zinc deficiency – due to a lack of meat in their diet. Cut marks on human bones found on King William Island were seen as signs of cannibalism; the combined evidence of all the studies suggested. Hypothermia, lead poisoning or zinc deficiency, diseases including scurvy, along with general exposure to a hostile environment whilst lacking adequate clothing and nutrition, killed everyone on the expedition in the years following its last sighting by Europeans in 1845; the Victorian media portrayed Franklin as a hero despite the expedition's failure and the reports of cannibalism.
Songs were written about him, statues of him in his home town of Spilsby, in London, in Tasmania credit him with discovery of the Northwest Passage, although in reality it was not traversed until Roald Amundsen's 1903–1906 expedition. Franklin's lost expedition has been the subject of many artistic works, including songs, short stories, novels, as well as television documentaries; the search by Europeans for a western shortcut by sea from Europe to Asia began with the voyages of Christopher Columbus in 1492 and continued through the mid-19th century with a long series of exploratory expeditions originating in England. These voyages, when to any degree successful, added to the sum of European geographic knowledge about the Western Hemisphere North America, as that knowledge grew larger, attention turned toward the Arctic. Voyagers of the 16th and 17th centuries who made geographic discoveries about North America included Martin Frobisher, John Davis, Henry Hudson, William Baffin. In 1670, the incorporation of the Hudson's Bay Company led to further exploration of the Canadian coasts and interior and of the Arctic seas.
In the 18th century, explorers included James Knight, Christopher Middleton, Samuel Hearne, James Cook, Alexander MacKenzie, George Vancouver. By 1800, their discoveries showed conclusively that no Northwest Passage navigable by ships lay in the temperate latitudes between the Pacific and the Atlantic Oceans. In 1804, Sir John Barrow became Second Secretary of the Admiralty, a post he held until 1845, began a push by the Royal Navy to complete the Northwest Passage over the top of Canada and to navigate toward the North Pole. Over the next four decades, explorers including John Ross, David Buchan, William Edward Parry, Frederick William Beechey, James Clark Ross, George Back, Peter Warren Dease, Thomas Simpson made productive trips to the Canadian Arctic. Among these explorers was John Franklin, second-in-command of an expedition towards the North Pole in the ships Dorothea and Trent in 1818 and the leader of overland expeditions to and along the Arctic coast of Canada in 1819–22 and 1825–27.
By 1845, the combined discoveries of all of these expeditions had reduced the relevant unknown parts of the Canadian Arctic to a quadrilateral area of about 181,300 km2. It was into this unknown area that Franklin was to sail, heading west through Lancaster Sound and west and south as ice and other obstacles might allow, to complete the Northwest Passage; the distance to be navigated was
Valletta is the capital city of Malta. Located in the south east of the island, between Marsamxett Harbour to the west and the Grand Harbour to the east, its population in 2014 was 6,444, while the metropolitan area around it has a population of 393,938. Valletta is the southernmost capital of Europe. Valletta's 16th century buildings were constructed by the Knights Hospitaller; the city is Baroque in character, with elements of Mannerist, Neo-Classical and Modern architecture, though the Second World War left major scars on the city the destruction of the Royal Opera House. The city was recognised as a World Heritage Site by UNESCO in 1980; the city's fortifications, consisting of bastions and cavaliers, along with the beauty of its Baroque palaces and churches, led the ruling houses of Europe to give the city its nickname Superbissima— Italian for Most Proud. The peninsula was called Xagħret Mewwija or Ħal Newwija. Mewwija refers to a sheltered place; the extreme end of the peninsula was known as Xebb ir-Ras, of which name origins from the lighthouse on site.
A family which owned land became known as Sceberras, now a Maltese surname as Sciberras. At one point the entire peninsula became known as Sceberras; the building of a city on the Sciberras Peninsula had been proposed by the Order of Saint John as early as 1524. Back the only building on the peninsula was a small watchtower dedicated to Erasmus of Formia, built in 1488. In 1552, the watchtower was demolished and the larger Fort Saint Elmo was built in its place. In the Great Siege of 1565, Fort Saint Elmo fell to the Ottomans, but the Order won the siege with the help of Sicilian reinforcements; the victorious Grand Master, Jean de Valette set out to build a new fortified city on the Sciberras Peninsula to fortify the Order's position in Malta and bind the Knights to the island. The city was called La Valletta; the Grand Master asked the European kings and princes for help, he received a lot of assistance, due to the increased fame of the Order after their victory in the Great Siege. Pope Pius V sent his military architect, Francesco Laparelli, to design the new city, while Philip II of Spain sent substantial monetary aid.
The foundation stone of the city was laid by Grand Master de Valette on 28 March 1566. He placed the first stone in what became Our Lady of Victories Church. In his book Dell’Istoria della Sacra Religione et Illustrissima Militia di San Giovanni Gierosolimitano, written between 1594 and 1602, Giacomo Bosio writes that when the cornerstone of Valletta was placed, a group of Maltese elders said: "Iegi zimen en fel wardia col sceber raba iesue uquie". De Valette never saw the completion of his city. Interred in the church of Our Lady of the Victories, his remains now rest in St. John's Co-Cathedral among the tombs of other Grand Masters of the Knights of Malta. Francesco Laparelli was the city's principal designer and his plan departed from medieval Maltese architecture, which exhibited irregular winding streets and alleys, he designed the new city on a rectangular grid plan, without any collacchio. The streets were designed to be wide and straight, beginning centrally from the City Gate and ending at Fort Saint Elmo overlooking the Mediterranean.
His assistant was the Maltese architect Girolamo Cassar, who oversaw the construction of the city himself after Laparelli's death in 1570. The Ufficio delle Case regulated the building of the city as a planning authority; the city of Valletta was complete by the early 1570s, it became the capital on 18 March 1571 when Grand Master Pierre de Monte moved from his seat at Fort St Angelo in Birgu to the Grandmaster's Palace in Valletta. Seven Auberges were built for the Order's Langues, these were complete by the 1580s. An eighth Auberge, Auberge de Bavière, was added in the 18th century. In Antoine de Paule's reign, it was decided to build more fortifications to protect Valletta, these were named the Floriana Lines after the architect who designed them, Pietro Paolo Floriani of Macerata. During António Manoel de Vilhena's reign, a town began to form between the walls of Valletta and the Floriana Lines, this evolved from a suburb of Valletta to Floriana, a town in its own right. In 1634, a gunpowder factory explosion killed 22 people in Valletta.
In 1749, Muslim slaves plotted to kill Grandmaster Pinto and take over Valletta, but the revolt was suppressed before it started due to their plans leaking out to the Order. On in his reign, Pinto embellished the city with Baroque architecture, many important buildings such as Auberge de Castille were remodeled or rebuilt in the new architectural style. In 1775, during the reign of Ximenes, an unsuccessful revolt known as the Rising of the Priests occurred in which Fort Saint Elmo and Saint James Cavalier were captured by rebels, but the revolt was suppressed. In 1798, the Order left the French occupation of Malta began. After the Maltese rebelled, French troops continued to occupy Valletta and the surrounding harbour area, until they capitulated to the British in September 1800. In the early 19th centur
Liverpool is a city in North West England, with an estimated population of 491,500 within the Liverpool City Council local authority in 2017. Its metropolitan area is the fifth-largest in the UK, with a population of 2.24 million in 2011. The local authority is Liverpool City Council, the most populous local government district in the metropolitan county of Merseyside and the largest in the Liverpool City Region. Liverpool is on the eastern side of the Mersey Estuary, lay within the ancient hundred of West Derby in the south west of the county of Lancashire, it became a borough in 1207 and a city in 1880. In 1889, it became a county borough independent of Lancashire, its growth as a major port was paralleled by the expansion of the city throughout the Industrial Revolution. Along with handling general cargo, raw materials such as coal and cotton, the city merchants were involved in the Atlantic slave trade. In the 19th century, it was a major port of departure for Irish and English emigrants to North America.
Liverpool was home to both the Cunard and White Star Line, was the port of registry of the ocean liner RMS Titanic, the RMS Lusitania, RMS Queen Mary and RMS Olympic. The popularity of the Beatles and other music groups from the Merseybeat era contributes to Liverpool's status as a tourist destination. Liverpool is the home of two Premier League football clubs and Everton, matches between the two being known as the Merseyside derby; the Grand National horse race takes place annually at Aintree Racecourse on the outskirts of the city. The city celebrated its 800th anniversary in 2007. In 2008, it was nominated as the annual European Capital of Culture together with Norway. Several areas of the city centre were granted World Heritage Site status by UNESCO in 2004; the Liverpool Maritime Mercantile City includes the Pier Head, Albert Dock, William Brown Street. Liverpool's status as a port city has attracted a diverse population, drawn from a wide range of peoples and religions from Ireland and Wales.
The city is home to the oldest Black African community in the country and the oldest Chinese community in Europe. Natives and residents of the city of Liverpool are referred to as Liverpudlians, colloquially as "Scousers", a reference to "scouse", a form of stew; the word "Scouse" has become synonymous with the Liverpool accent and dialect. The name comes from the Old English lifer, meaning thick or muddy water, pōl, meaning a pool or creek, is first recorded around 1190 as Liuerpul. According to the Cambridge Dictionary of English Place-Names, "The original reference was to a pool or tidal creek now filled up into which two streams drained"; the adjective Liverpudlian is first recorded in 1833. Other origins of the name have been suggested, including "elverpool", a reference to the large number of eels in the Mersey; the name appeared in 1190 as "Liuerpul", the place appearing as Leyrpole, in a legal record of 1418, may refer to Liverpool. Another such suggestion is derivation from Welsh llyvr pwl meaning "expanse or confluence at the pool".
King John's letters patent of 1207 announced the foundation of the borough of Liverpool. By the middle of the 16th century, the population was still around 500; the original street plan of Liverpool is said to have been designed by King John near the same time it was granted a royal charter, making it a borough. The original seven streets were laid out in an H shape: Bank Street, Castle Street, Chapel Street, Dale Street, Juggler Street, Moor Street and Whiteacre Street. In the 17th century there was slow progress in population growth. Battles for control of the town were waged during the English Civil War, including an eighteen-day siege in 1644. In 1699 Liverpool was made a parish by Act of Parliament, that same year its first slave ship, Liverpool Merchant, set sail for Africa. Since Roman times, the nearby city of Chester on the River Dee had been the region's principal port on the Irish Sea. However, as the Dee began to silt up, maritime trade from Chester became difficult and shifted towards Liverpool on the neighbouring River Mersey.
As trade from the West Indies, including sugar, surpassed that of Ireland and Europe, as the River Dee continued to silt up, Liverpool began to grow with increasing rapidity. The first commercial wet dock was built in Liverpool in 1715. Substantial profits from the slave trade and tobacco helped the town to prosper and grow, although several prominent local men, including William Rathbone, William Roscoe and Edward Rushton, were at the forefront of the abolitionist movement. By the start of the 19th century, a large volume of trade was passing through Liverpool, the construction of major buildings reflected this wealth. In 1830, Liverpool and Manchester became the first cities to have an intercity rail link, through the Liverpool and Manchester Railway; the population continued to rise especially during the 1840s when Irish migrants began arriving by the hundreds of thousands as a result of the Great Famine. In her poem "Liverpool", which celebrates the city's worldwide commerce, Letitia Elizabeth Landon refers to the Macgregor Laird expedition to the Niger River, at that time in progress.
Great Britain was a major market for cotton imported from the Deep South of the United States, which fed the textile industry in the country. Given the crucial place of both cotton and slavery in the city's economy, during the American Civil War Liverpool was, in the words of historian Sven Beckert, "the most pro-Confederate place in the world outside the Confederacy itself." For periods during the 19th century, the wealth of Liverpool
The Royal Navy is the United Kingdom's naval warfare force. Although warships were used by the English kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years War against the Kingdom of France; the modern Royal Navy traces its origins to the early 16th century. From the middle decades of the 17th century, through the 18th century, the Royal Navy vied with the Dutch Navy and with the French Navy for maritime supremacy. From the mid 18th century, it was the world's most powerful navy until surpassed by the United States Navy during the Second World War; the Royal Navy played a key part in establishing the British Empire as the unmatched world power during the 19th and first part of the 20th centuries. Due to this historical prominence, it is common among non-Britons, to refer to it as "the Royal Navy" without qualification. Following World War I, the Royal Navy was reduced in size, although at the onset of World War II it was still the world's largest.
By the end of the war, the United States Navy had emerged as the world's largest. During the Cold War, the Royal Navy transformed into a anti-submarine force, hunting for Soviet submarines and active in the GIUK gap. Following the collapse of the Soviet Union, its focus has returned to expeditionary operations around the world and remains one of the world's foremost blue-water navies. However, 21st century reductions in naval spending have led to a personnel shortage and a reduction in the number of warships; the Royal Navy maintains a fleet of technologically sophisticated ships and submarines including two aircraft carriers, two amphibious transport docks, four ballistic missile submarines, six nuclear fleet submarines, six guided missile destroyers, 13 frigates, 13 mine-countermeasure vessels and 22 patrol vessels. As of November 2018, there are 74 commissioned ships in the Royal Navy, plus 12 ships of the Royal Fleet Auxiliary; the RFA replenishes Royal Navy warships at sea, augments the Royal Navy's amphibious warfare capabilities through its three Bay-class landing ship vessels.
It works as a force multiplier for the Royal Navy doing patrols that frigates used to do. The total displacement of the Royal Navy is 408,750 tonnes; the Royal Navy is part of Her Majesty's Naval Service, which includes the Royal Marines. The professional head of the Naval Service is the First Sea Lord, an admiral and member of the Defence Council of the United Kingdom; the Defence Council delegates management of the Naval Service to the Admiralty Board, chaired by the Secretary of State for Defence. The Royal Navy operates three bases in the United Kingdom; as the seaborne branch of HM Armed Forces, the RN has various roles. As it stands today, the RN has stated its 6 major roles as detailed below in umbrella terms. Preventing Conflict – On a global and regional level Providing Security At Sea – To ensure the stability of international trade at sea International Partnerships – To help cement the relationship with the United Kingdom's allies Maintaining a Readiness To Fight – To protect the United Kingdom's interests across the globe Protecting the Economy – To safe guard vital trade routes to guarantee the United Kingdom's and its allies' economic prosperity at sea Providing Humanitarian Aid – To deliver a fast and effective response to global catastrophes The strength of the fleet of the Kingdom of England was an important element in the kingdom's power in the 10th century.
At one point Aethelred II had an large fleet built by a national levy of one ship for every 310 hides of land, but it is uncertain whether this was a standard or exceptional model for raising fleets. During the period of Danish rule in the 11th century, the authorities maintained a standing fleet by taxation, this continued for a time under the restored English regime of Edward the Confessor, who commanded fleets in person. English naval power declined as a result of the Norman conquest. Following the Battle of Hastings, the Norman navy that brought over William the Conqueror disappeared from records due to William receiving all of those ships from feudal obligations or because of some sort of leasing agreement which lasted only for the duration of the enterprise. More troubling, is the fact that there is no evidence that William adopted or kept the Anglo-Saxon ship mustering system, known as the scipfryd. Hardly noted after 1066, it appears that the Normans let the scipfryd languish so that by 1086, when the Doomsday Book was completed, it had ceased to exist.
According to the Anglo-Saxon Chronicle, in 1068, Harold Godwinson's sons Godwine and Edmund conducted a ‘raiding-ship army’ which came from Ireland, raiding across the region and to the townships of Bristol and Somerset. In the following year of 1069, they returned with a bigger fleet which they sailed up the River Taw before being beaten back by a local earl near Devon. However, this made explicitly clear that the newly conquered England under Norman rule, in effect, ceded the Irish Sea to the Irish, the Vikings of Dublin, other Norwegians. Besides ceding away the Irish Sea, the Normans ceded the North Sea, a major area where Nordic peoples traveled. In 1069, this lack of naval presence in the North Sea allowed for the invasion an
A propeller is a type of fan that transmits power by converting rotational motion into thrust. A pressure difference is produced between the forward and rear surfaces of the airfoil-shaped blade, a fluid is accelerated behind the blade. Propeller dynamics, like those of aircraft wings, can be modelled by Bernoulli's principle and Newton's third law. Most marine propellers are screw propellers with fixed helical blades rotating around a horizontal axis or propeller shaft; the principle employed in using a screw propeller is used in sculling. It is part of the skill of propelling a Venetian gondola but was used in a less refined way in other parts of Europe and elsewhere. For example, propelling a canoe with a single paddle using a "pitch stroke" or side slipping a canoe with a "scull" involves a similar technique. In China, called "lu", was used by the 3rd century AD. In sculling, a single blade is moved through an arc, from side to side taking care to keep presenting the blade to the water at the effective angle.
The innovation introduced with the screw propeller was the extension of that arc through more than 360° by attaching the blade to a rotating shaft. Propellers can have a single blade, but in practice there are nearly always more than one so as to balance the forces involved; the origin of the screw propeller starts with Archimedes, who used a screw to lift water for irrigation and bailing boats, so famously that it became known as Archimedes' screw. It was an application of spiral movement in space to a hollow segmented water-wheel used for irrigation by Egyptians for centuries. Leonardo da Vinci adopted the principle to drive his theoretical helicopter, sketches of which involved a large canvas screw overhead. In 1661, Toogood and Hays proposed using screws for waterjet propulsion, though not as a propeller. Robert Hooke in 1681 designed a horizontal watermill, remarkably similar to the Kirsten-Boeing vertical axis propeller designed two and a half centuries in 1928. In 1752, the Academie des Sciences in Paris granted Burnelli a prize for a design of a propeller-wheel.
At about the same time, the French mathematician Alexis-Jean-Pierre Paucton, suggested a water propulsion system based on the Archimedean screw. In 1771, steam-engine inventor James Watt in a private letter suggested using "spiral oars" to propel boats, although he did not use them with his steam engines, or implement the idea; the first practical and applied use of a propeller on a submarine dubbed Turtle, designed in New Haven, Connecticut, in 1775 by Yale student and inventor David Bushnell, with the help of the clock maker and brass foundryman Isaac Doolittle, with Bushnell's brother Ezra Bushnell and ship's carpenter and clock maker Phineas Pratt constructing the hull in Saybrook, Connecticut. On the night of September 6, 1776, Sergeant Ezra Lee piloted Turtle in an attack on HMS Eagle in New York Harbor. Turtle has the distinction of being the first submarine used in battle. Bushnell described the propeller in an October 1787 letter to Thomas Jefferson: "An oar formed upon the principle of the screw was fixed in the forepart of the vessel its axis entered the vessel and being turned one way rowed the vessel forward but being turned the other way rowed it backward.
It was made to be turned by the hand or foot." The brass propeller, like all the brass and moving parts on Turtle, was crafted by the "ingenious mechanic" Issac Doolittle of New Haven. In 1785, Joseph Bramah in England proposed a propeller solution of a rod going through the underwater aft of a boat attached to a bladed propeller, though he never built it. In 1802, Edward Shorter proposed using a similar propeller attached to a rod angled down temporarily deployed from the deck above the waterline and thus requiring no water seal, intended only to assist becalmed sailing vessels, he tested it on the transport ship Doncaster in Gibraltar and at Malta, achieving a speed of 1.5 mph. The lawyer and inventor John Stevens in the United States, built a 25-foot boat with a rotary stem engine coupled to a four-bladed propeller, achieving a speed of 4 mph, but he abandoned propellers due to the inherent danger in using the high-pressure steam engines, instead built paddle-wheeled boats. By 1827, Czech-Austrian inventor Josef Ressel had invented a screw propeller which had multiple blades fastened around a conical base.
He had tested his propeller in February 1826 on a small ship, manually driven. He was successful in using his bronze screw propeller on an adapted steamboat, his ship, Civetta of 48 gross register tons, reached a speed of about 6 knots. This was the first ship driven by an Archimedes screw-type propeller. After a new steam engine had an accident his experiments were banned by the Austro-Hungarian police as dangerous. Josef Ressel was at the time a forestry inspector for the Austrian Empire, but before this he received an Austro-Hungarian patent for his propeller. He died in 1857; this new method of propulsion was an improvement over the paddlewheel as it was not so affected by either ship motions or changes in draft as the vessel burned coal. John Patch, a mariner in Yarmouth, Nova Scotia developed a two-bladed, fan-shaped propeller in 1832 and publicly demonstrated it in 1833, propelling a row boat across Yarmouth Harbour and a small coastal schooner at Saint John, New Brunswick, but his patent application in the United States was rejected until 1849 because he was not an American citizen.
His efficient design drew praise in American scientific circles but by
Pembroke Dockyard and called Pater Yard was a former Royal Navy Dockyard in Pembroke Dock, Wales. It was founded in 1814, although not formally authorized until the Prince Regent signed the necessary Order in Council on 31 October 1815, was known as Pater Yard until 1817; the Mayor of Pembroke had requested the change'in deference to the town of Pembroke some two miles distant'. The site selected for the dockyard was greenfield land and the closest accommodations were in Pembroke. Office space was provided by the old frigate Lapwing; the Royal Marine garrison was housed in the hulked 74-gun ship, HMS Dragon, after she was run aground in 1832. Many of the workmen commuted by boat from nearby communities. After the end of the First World War, the dockyard was closed by the cash-strapped Admiralty as redundant in 1926; the Royal Air Force, built its RAF Pembroke Dock on the site during the 1930s to house its flying boats, demolishing many of the existing buildings to make room for the necessary hangars and other facilities.
The admiral-superintendent was the Royal Navy officer in command of a larger Naval Dockyard. Portsmouth and Chatham all had admiral-superintendents, as did some other dockyards in the United Kingdom and abroad at certain times; the admiral-superintendent held the rank of rear-admiral. His deputy was the captain of the dockyard; some smaller dockyards, such as Sheerness and Pembroke, had a captain-superintendent instead, whose deputy was styled commander of the dockyard. The appointment of a commodore-superintendent was made from time to time in certain yards; the appointment of admiral-superintendents dates from 1832 when the Admiralty took charge of the Royal Dockyards. Prior to this larger dockyards were overseen by a commissioner. Included: Captain Charles Bullen, July 1830-1832 Included: Captain George Ramsay: July 1857-September 1862 Captain William Loring: September 1862-March 1866 Captain Robert Hall: March 1866-March 1871 Captain William Armytage: February 1871-January 1872 Captain Richard W. Courtenay: January 1872-March 1875 Captain Richard Vesey Hamilton: March 1875-October 1877 Captain George H. Parkin: October 1877-October 1882 Captain Alfred J. Chatfield: October 1882-January 1886 Captain Edward Kelly: January 1886-June 1887 Commodore George Digby Morant: June 1887-January 1889 Captain Samuel Long: January 1889-August 1891 Captain Walter Stewart: August 1891-January 1893 Captain Charles C.
Penrose Fitzgerald: January 1893-March 1895 Captain William H. Hall: March 1895 Captain Charles J. Balfour: March 1895-October 1896 Captain Burges Watson: October 1896-October 1899 Captain Charles J. Barlow: October 1899-October 1902 Captain Gerald Walter Russell: October 1902-October 1904 Captain John Denison: October 1904-October 1906 Rear-Admiral Henry C. Kingsford: October 1906-December 1908 Rear-Admiral Godfrey H. B. Mundy: December 1908-December 1911 Rear-Admiral Alfred E. A. Grant: December 1911-September 1915 Captain Frederick D. Gilpin Brown: September 1915-April 1918 Captain John G. Armstrong: April 1918-February 1920 Captain David Murray Anderson: February 1920-April 1922 Captain the Hon. Arthur B. S. Dutton: April 1922-July 1924 Captain Leonard A. B. Donaldson: July 1924-1926 Phillips, Lawrie. Pembroke Dockyard and the Old Navy: A Bicentennial History. Stroud, Gloucestershire, UK: The History Press. ISBN 978-0-7509-5214-9