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120-514: SS Austria was a steamship of the Hamburg America Line which sank on 13 September 1858, in one of the worst transatlantic maritime disasters of the nineteenth century, claiming the lives of 449 passengers and crew. The Austria was built by Caird & Co. of Greenock , Scotland and was launched on 23 June 1857. She was 318  ft and 2,684  BRT , with three masts and single screw propeller propulsion . After

240-458: A "major driver of the first wave of trade globalization (1870–1913)" and contributor to "an increase in international trade that was unprecedented in human history". Steamships were preceded by smaller vessels, called steamboats , conceived in the first half of the 18th century, with the first working steamboat and paddle steamer , the Pyroscaphe , from 1783. Once the technology of steam

360-543: A 25 kilometres (16 mi) stretch of light steel netting called the Dover Barrage , which it was hoped would ensnare submerged submarines. After initial success, the Germans learned how to pass through the barrage, aided by the unreliability of British mines. On 31 January 1917, the Germans resumed unrestricted submarine warfare leading to dire Admiralty predictions that submarines would defeat Britain by November,

480-495: A cancelled British Government charter, she went into service with the Hamburg America Line on 1 May 1858 on the Hamburg - New York City route. On 1 September 1858, SS Austria captained by F. A. Heydtmann sailed from Hamburg on her third voyage to New York City . At approximately 12:00, on 13 September, at coordinates 45°01′N 41°30′W  /  45.017°N 41.500°W  / 45.017; -41.500 , following

600-610: A certain depth, however when the depth of the ship changed from added weight it further submerged the paddle wheel causing a substantial decrease in performance. Within a few decades of the development of the river and canal steamboat, the first steamships began to cross the Atlantic Ocean . The first sea-going steamboat was Richard Wright's first steamboat Experiment , an ex-French lugger ; she steamed from Leeds to Yarmouth in July 1813. The first iron steamship to go to sea

720-443: A day when travelling at 13 knots (24 km/h; 15 mph). Her maiden outward voyage to Melbourne took 42 days, with one coaling stop, carrying 4,000 tons of cargo. Other similar ships were rapidly brought into service over the next few years. By 1885 the usual boiler pressure was 150 pounds per square inch (1,000 kPa) and virtually all ocean-going steamships being built were ordered with triple expansion engines. Within

840-566: A demonstration project for the potential use of nuclear energy. Thousands of Liberty Ships (powered by steam piston engines) and Victory Ships (powered by steam turbine engines) were built in World War II. A few of these survive as floating museums and sail occasionally: SS  Jeremiah O'Brien , SS  John W. Brown , SS  American Victory , SS  Lane Victory , and SS  Red Oak Victory . A steam turbine ship can be either direct propulsion (the turbines, equipped with

960-430: A few further experiments until SS  Aberdeen  (1881) went into service on the route from Britain to Australia. Her triple expansion engine was designed by Dr A C Kirk, the engineer who had developed the machinery for Propontis . The difference was the use of two double ended Scotch type steel boilers, running at 125 pounds per square inch (860 kPa). These boilers had patent corrugated furnaces that overcame

1080-551: A few years, new installations were running at 200 pounds per square inch (1,400 kPa). The tramp steamers that operated at the end of the 1880s could sail at 9 knots (17 km/h; 10 mph) with a fuel consumption of 0.5 ounces (14 g) of coal per ton mile travelled. This level of efficiency meant that steamships could now operate as the primary method of maritime transport in the vast majority of commercial situations. In 1890, steamers constituted 57% of world's tonnage, and by World War I their share raised to 93%. By 1870

1200-473: A given distance, but fewer firemen were needed to fuel the boilers, so crew costs and their accommodation space were reduced. Agamemnon was able to sail from London to China with a coaling stop at Mauritius on the outward and return journey, with a time on passage substantially less than the competing sailing vessels. Holt had already ordered two sister ships to Agamemnon by the time she had returned from her first trip to China in 1866, operating these ships in

1320-510: A head wind, most notably against the southwest monsoon when returning with a cargo of new tea. Though the auxiliary steamers persisted in competing in far eastern trade for a few years (and it was Erl King that carried the first cargo of tea through the Suez Canal ), they soon moved on to other routes. What was needed was a big improvement in fuel efficiency. While the boilers for steam engines on land were allowed to run at high pressures,

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1440-403: A long bush of soft metal was fitted in the after end of the stern tube. SS  Great Eastern had this arrangement fail on her first transatlantic voyage, with very large amounts of uneven wear. The problem was solved with a lignum vitae water-lubricated bearing, patented in 1858. This became standard practice and is in use today. Since the motive power of screw propulsion is delivered along

1560-502: A number of inventions such as the screw propeller , the compound engine , and the triple-expansion engine made trans-oceanic shipping on a large scale economically viable. In 1870 the White Star Line ’s RMS  Oceanic set a new standard for ocean travel by having its first-class cabins amidships, with the added amenity of large portholes, electricity and running water. The size of ocean liners increased from 1880 to meet

1680-458: A particularly compact compound engine and taken great care with the hull design, producing a light, strong, easily driven hull. The efficiency of Holt's package of boiler pressure, compound engine and hull design gave a ship that could steam at 10 knots on 20 long tons of coal a day. This fuel consumption was a saving from between 23 and 14 long tons a day, compared to other contemporary steamers. Not only did less coal need to be carried to travel

1800-403: A procedure to fumigate steerage by dipping a red-hot chain into a bucket of tar; the chain became too hot for the boatswain to hold, and it was dropped onto the deck, which immediately burst into flames; although the ship was traveling at only half speed it was impossible to stop the engines as the engine crew had become asphyxiated. When the helmsman abandoned the wheel, the ship swung into

1920-513: A protected World Heritage Site coastline. The ship had been damaged and was en route to Portland Harbour . The English Channel, despite being a busy shipping lane, remains in part a haven for wildlife. Atlantic oceanic species are more common in the westernmost parts of the channel, particularly to the west of Start Point, Devon , but can sometimes be found further east towards Dorset and the Isle of Wight. Seal sightings are becoming more common along

2040-474: A reduction gear, rotate directly the propellers), or turboelectric (the turbines rotate electric generators, which in turn feed electric motors operating the propellers). While steam turbine-driven merchant ships such as the Algol -class cargo ships (1972–1973), ALP Pacesetter-class container ships (1973–1974) and very large crude carriers were built until the 1970s, the use of steam for marine propulsion in

2160-426: A sailing vessel. The steam engine would only be used when conditions were unsuitable for sailing – in light or contrary winds. Some of this type (for instance Erl King ) were built with propellers that could be lifted clear of the water to reduce drag when under sail power alone. These ships struggled to be successful on the route to China, as the standing rigging required when sailing was a handicap when steaming into

2280-399: A shaft that is positioned above the waterline, with the cylinders positioned below the shaft. SS  Great Britain used chain drive to transmit power from a paddler's engine to the propeller shaft – the result of a late design change to propeller propulsion. An effective stern tube and associated bearings were required. The stern tube contains the propeller shaft where it passes through

2400-460: The Battle of Britain featured German air attacks on Channel shipping and ports; despite these early successes against shipping the Germans did not win the air supremacy necessary for Operation Sealion , the projected cross-Channel invasion. The Channel subsequently became the stage for an intensive coastal war, featuring submarines, minesweepers , and Fast Attack Craft . The narrow waters of

2520-528: The Board of Trade (under the authority of the Merchant Shipping Act 1854 ) would not allow ships to exceed 20 or 25 pounds per square inch (140 or 170 kPa). Compound engines were a known source of improved efficiency – but generally not used at sea due to the low pressures available. Carnatic (1863) , a P&O ship, had a compound engine – and achieved better efficiency than other ships of

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2640-458: The Cold War (eg. Russian aircraft carrier Admiral Kuznetsov ), because of needs of high power and speed, although from 1970s they were mostly replaced by gas turbines . Large naval vessels and submarines continue to be operated with steam turbines, using nuclear reactors to boil the water. NS Savannah , was the first nuclear-powered cargo-passenger ship, and was built in the late 1950s as

2760-711: The East Coast to the West Coast of the United States began on 28 February 1849, with the arrival of SS  California in San Francisco Bay . The California left New York Harbor on 6  October 1848, rounded Cape Horn at the tip of South America, and arrived at San Francisco, California, after a four-month and 21-day journey. The first steamship to operate on the Pacific Ocean was

2880-661: The Glorious Revolution of 1688, while the concentration of excellent harbours in the Western Channel on Britain's south coast made possible the largest amphibious invasion in history, the Normandy Landings in 1944. Channel naval battles include the Battle of the Downs (1639), Battle of Dover (1652), the Battle of Portland (1653) and the Battle of La Hougue (1692). In more peaceful times,

3000-708: The Low Countries . The North Sea reaches much greater depths east of northern Britain. The Channel descends briefly to 180 m (590 ft) in the submerged valley of Hurd's Deep , 48 km (30 mi) west-northwest of Guernsey . There are several major islands in the Channel, the most notable being the Isle of Wight off the English coast, and the Channel Islands , British Crown Dependencies off

3120-594: The Mediterranean and then through the Red Sea . While this worked for passengers and some high value cargo, sail was still the only solution for virtually all trade between China and Western Europe or East Coast America. Most notable of these cargoes was tea , typically carried in clippers . Another partial solution was the Steam Auxiliary Ship – a vessel with a steam engine, but also rigged as

3240-586: The Neolithic front in southern Europe to the Mesolithic peoples of northern Europe." The Ferriby Boats , Hanson Log Boats and the later Dover Bronze Age Boat could carry a substantial cross-Channel cargo. Diodorus Siculus and Pliny both suggest trade between the rebel Celtic tribes of Armorica and Iron Age Britain flourished. In 55 BC Julius Caesar invaded, claiming that the Britons had aided

3360-494: The Norman Conquest beginning with the Battle of Hastings , while retaining the fiefdom of Normandy for himself and his descendants. In 1204, during the reign of King John , mainland Normandy was taken from England by France under Philip II , while insular Normandy (the Channel Islands ) remained under English control. In 1259, Henry III of England recognised the legality of French possession of mainland Normandy under

3480-840: The North Sea to the Western Atlantic via the Strait of Dover is of geologically recent origin, having formed late in the Pleistocene period. The English Channel first developed as an arm of the Atlantic Ocean during the Pliocene period (5.3-2.6 million years ago) as a result of differential tectonic uplift along pre-existing tectonic weaknesses during the Oligocene and Miocene periods. During this early period,

3600-628: The Strait of Dover . It is the smallest of the shallow seas around the continental shelf of Europe, covering an area of some 75,000 square kilometres (22,000 square nautical miles; 29,000 square miles). The Channel aided the United Kingdom in becoming a naval superpower, serving as a natural defence to halt attempted invasions, such as in the Napoleonic Wars and in the Second World War . The northern, English coast of

3720-698: The Treaty of Paris . His successors, however, often fought to regain control of mainland Normandy. With the rise of William the Conqueror , the North Sea and Channel began to lose some of their importance. The new order oriented most of England and Scandinavia's trade south, toward the Mediterranean and the Orient. Although the British surrendered claims to mainland Normandy and other French possessions in 1801,

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3840-491: The Treaty of Paris of 1259 , the surrender of French possessions in 1801, and the belief that the rights of succession to that title are subject to Salic Law which excludes inheritance through female heirs. French Normandy was occupied by English forces during the Hundred Years' War in 1346–1360 and again in 1415–1450. From the reign of Elizabeth I , English foreign policy concentrated on preventing invasion across

3960-652: The Veneti against him the previous year. He was more successful in 54 BC , but Britain was not fully established as part of the Roman Empire until Aulus Plautius 's 43 AD invasion . A brisk and regular trade began between ports in Roman Gaul and those in Britain. This traffic continued until the end of Roman rule in Britain in 410 AD, after which the early Anglo-Saxons left less clear historical records. In

4080-696: The reciprocating steam engine , and was far easier to control. Diesel engines also required far less supervision and maintenance than steam engines, and as an internal combustion engine it did not need boilers or a water supply, therefore was more space efficient and cheaper to build. The Liberty ships were the last major steamship class equipped with reciprocating engines. The last Victory ships had already been equipped with marine diesels, and diesel engines superseded both steamers and windjammers soon after World War Two. Most steamers were used up to their maximum economical life span, and no commercial ocean-going steamers with reciprocating engines have been built since

4200-630: The Ärmelkanal in German, or a direct borrowing , such as Canal de la Mancha in Spanish. The International Hydrographic Organization defines the limits of the English Channel as: The Strait of Dover (French: Pas de Calais ), at the Channel's eastern end, is its narrowest point, while its widest point lies between Lyme Bay and the Gulf of Saint Malo , near its midpoint. Well on

4320-401: The 1960s. Most steamships today are powered by steam turbines . After the demonstration by British engineer Charles Parsons of his steam turbine-driven yacht, Turbinia , in 1897, the use of steam turbines for propulsion quickly spread. The Cunard RMS Mauretania , built in 1906 was one of the first ocean liners to use the steam turbine (with a late design change shortly before her keel

4440-475: The Atlantic Ocean on a scheduled liner voyage before she was converted to diesels in 1986. The last major passenger ship built with steam turbines was the Fairsky , launched in 1984, later Atlantic Star , reportedly sold to Turkish shipbreakers in 2013. Most luxury yachts at the end of the 19th and early 20th centuries were steam driven (see luxury yacht ; also Cox & King yachts ). Thomas Assheton Smith

4560-596: The Atlantic, around the southern tip of Africa, and across the Indian Ocean . Before 1866, no steamship could carry enough coal to make this voyage and have enough space left to carry a commercial cargo. A partial solution to this problem was adopted by the Peninsular and Oriental Steam Navigation Company (P&O), using an overland section between Alexandria and Suez , with connecting steamship routes along

4680-409: The Atlantic. The flooding destroyed the ridge that connected Britain to continental Europe , although a land connection across the southern North Sea would have existed intermittently at later times when periods of glaciation resulted in lowering of sea levels. During interglacial periods (when sea levels were high) between the initial flooding 450,000 years ago until around 180,000 years ago,

4800-471: The Bristol-New York route. The idea of regular scheduled transatlantic service was under discussion by several groups and the rival British and American Steam Navigation Company was established at the same time. Great Western's design sparked controversy from critics that contended that she was too big. The principle that Brunel understood was that the carrying capacity of a hull increases as

4920-466: The Channel , is an arm of the Atlantic Ocean that separates Southern England from northern France . It links to the southern part of the North Sea by the Strait of Dover at its northeastern end. It is the busiest shipping area in the world. It is about 560 kilometres (300 nautical miles; 350 statute miles) long and varies in width from 240 km (130 nmi; 150 mi) at its widest to 34 km (18 nmi; 21 mi) at its narrowest in

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5040-535: The Channel by ensuring no major European power controlled the potential Dutch and Flemish invasion ports. Her climb to the pre-eminent sea power of the world began in 1588 as the attempted invasion of the Spanish Armada was defeated by the combination of outstanding naval tactics by the English and the Dutch under command of Charles Howard, 1st Earl of Nottingham with Sir Francis Drake second in command, and

5160-532: The Channel did not connect to the North Sea, with Britain and Ireland remaining part of continental Europe , linked by an unbroken Weald–Artois anticline , a ridge running between the Dover and Calais regions. During Pleistocene glacial periods this ridge acted as a natural dam holding back a large freshwater pro-glacial lake in the Doggerland region, now submerged under the North Sea . During this period,

5280-455: The Channel for several weeks, but was thwarted following the British naval victory at the Battle of Quiberon Bay in 1759 and was unsuccessful (The last French landing on English soil being in 1690 with a raid on Teignmouth, although the last French raid on British soil was a raid on Fishguard, Wales in 1797). Another significant challenge to British domination of the seas came during the Napoleonic Wars . The Battle of Trafalgar took place off

5400-511: The Channel is more populous than the southern, French coast. The major languages spoken in this region are English and French . Roman sources as Oceanus Britannicus (or Mare Britannicum , meaning the Ocean, or the Sea, of the Britons or Britannī ). Variations of this term were used by influential writers such as Ptolemy , and remained popular with British and continental authors well into

5520-723: The Channel served as a link joining shared cultures and political structures, particularly the huge Angevin Empire from 1135 to 1217. For nearly a thousand years, the Channel also provided a link between the Modern Celtic regions and languages of Cornwall and Brittany . Brittany was founded by Britons who fled Cornwall and Devon after Anglo-Saxon encroachment. In Brittany, there is a region known as " Cornouaille " (Cornwall) in French and "Kernev" in Breton . In ancient times there

5640-598: The Channel would still have been separated from the North Sea by a landbridge to the north of the Strait of Dover (the Strait of Dover at this time formed part of a estuary fed by the Thames and Scheldt ), restricting interchange of marine fauna between the Channel and the North Sea (except perhaps by occasional overtopping). During the Last Interglacial/Eemian (115–130,000 years ago) the connection between

5760-608: The English Channel, with both Grey Seal and Harbour Seal recorded frequently. The Channel is thought to have prevented Neanderthals from colonising Britain during the Last Interglacial/Eemian, though they returned to Britain during the Last Glacial Period when sea levels were lower. The Channel has in historic times been both an easy entry for seafaring people and a key natural defence, halting invading armies while in conjunction with control of

5880-474: The Isle of Wight and the mainland. The Celtic Sea is to the west of the Channel. The Channel acts as a funnel that amplifies the tidal range from less than a metre at sea in eastern places to more than 6 metres in the Channel Islands , the west coast of the Cotentin Peninsula and the north coast of Brittany in monthly spring tides . The time difference of about six hours between high water at

6000-527: The Liverpool to New York route. RMS  Titanic was the largest steamship in the world when she sank in 1912; a subsequent major sinking of a steamer was that of the RMS ; Lusitania , as an act of World War I . Launched in 1938, RMS  Queen Elizabeth was the largest passenger steamship ever built. Launched in 1969, Queen Elizabeth 2 (QE2) was the last passenger steamship to cross

6120-451: The North Sea allowing Britain to blockade the continent. The most significant failed invasion threats came when the Dutch and Belgian ports were held by a major continental power, e.g. from the Spanish Armada in 1588, Napoleon during the Napoleonic Wars , and Nazi Germany during World War II . Successful invasions include the Roman conquest of Britain , the Norman Conquest in 1066 and

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6240-579: The North Sea and almost all of the British Isles were covered by ice. The lake was fed by meltwater from the Baltic and from the Caledonian and Scandinavian ice sheets that joined to the north, blocking its exit. The sea level was about 120 m (390 ft) lower than it is today. Then, between 450,000 and 180,000 years ago, at least two catastrophic glacial lake outburst floods breached

6360-543: The North Sea and the English Channel was fully open as it is today, resulting in Britain being an island during this interval, before lowered sea levels reconnected it to the continent during the Last Glacial Period . From the end of the Last Glacial Period, to the beginning of the Holocene rising sea levels again resulted in the unimpeded connection between the North Sea and the English Channel resuming due to

6480-539: The Weald–Artois anticline. These contributed to creating some of the deepest parts of the channel such as Hurd's Deep . The first flood of 450,000 years ago would have lasted for several months, releasing as much as one million cubic metres of water per second. The flood started with large but localised waterfalls over the ridge, which excavated depressions now known as the Fosses Dangeard . The flow eroded

6600-552: The arrival of the Romans in the area. The modern Welsh is often given as Môr Udd (the Lord's or Prince's Sea); however, this name originally described both the Channel and the North Sea combined. Anglo-Saxon texts make reference to the sea as Sūð-sǣ (South Sea), but this term fell out of favour, as later English authors followed the same conventions as their Latin and Norman contemporaries. One English name that did persist

6720-686: The beginning of the Viking Age . For the next 250 years the Scandinavian raiders of Norway, Sweden, and Denmark dominated the North Sea, raiding monasteries, homes, and towns along the coast and along the rivers that ran inland. According to the Anglo-Saxon Chronicle they began to settle in Britain in 851. They continued to settle in the British Isles and the continent until around 1050, with some raids recorded along

6840-517: The centre of the Straits of Dover and into the English Channel. It left streamlined islands, longitudinal erosional grooves, and other features characteristic of catastrophic megaflood events, still present on the sea floor and now revealed by high-resolution sonar. Through the scoured channel passed a river, the Channel River , which drained the combined Rhine and Thames westwards to

6960-439: The channel coast of England, including at Wareham, Portland, near Weymouth and along the river Teign in Devon. The fiefdom of Normandy was created for the Viking leader Rollo (also known as Robert of Normandy). Rollo had besieged Paris but in 911 entered vassalage to the king of the West Franks Charles the Simple through the Treaty of St.-Claire-sur-Epte . In exchange for his homage and fealty , Rollo legally gained

7080-407: The coast of France. The coastline, particularly on the French shore, is deeply indented, with several small islands close to the coastline, including Chausey and Mont-Saint-Michel . The Cotentin Peninsula on the French coast juts out into the Channel, with the wide Bay of the Seine (French: Baie de Seine ) to its east. On the English side there is a small parallel strait , the Solent , between

7200-408: The coast of Spain against a combined French and Spanish fleet and was won by Admiral Horatio Nelson , ending Napoleon 's plans for a cross-Channel invasion and securing British dominance of the seas for over a century. The exceptional strategic importance of the Channel as a tool for blockading was recognised by the First Sea Lord Admiral Fisher in the years before World War I . "Five keys lock up

7320-426: The commercial market has declined dramatically due to the development of more efficient diesel engines . One notable exception are LNG carriers which use boil-off gas from the cargo tanks as fuel. However, even there the development of dual-fuel engines has pushed steam turbines into a niche market with about 10% market share in newbuildings in 2013. Lately, there has been some development in hybrid power plants where

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7440-436: The competing problems of heat transfer and sufficient strength to deal with the boiler pressure. Aberdeen was a marked success, achieving in trials, at 1,800 indicated horsepower , a fuel consumption of 1.28 pounds (0.58 kg) of coal per indicated horsepower. This was a reduction in fuel consumption of about 60%, compared to a typical steamer built ten years earlier. In service, this translated into less than 40 tons of coal

7560-435: The continental shelf, it has an average depth of about 120 m (390 ft) at its widest; yet averages about 45 m (148 ft) between Dover and Calais , its notable sandbank hazard being Goodwin Sands . Eastwards from there the adjoining North Sea reduces to about 26 m (85 ft) across the Broad Fourteens (14 fathoms) where it lies over the southern cusp of the former land bridge between East Anglia and

7680-435: The cube of its dimensions, while water resistance only increases as the square of its dimensions. This meant that large ships were more fuel efficient, something very important for long voyages across the Atlantic. Great Western was an iron-strapped, wooden, side-wheel paddle steamer, with four masts to hoist the auxiliary sails. The sails were not just to provide auxiliary propulsion, but also were used in rough seas to keep

7800-404: The description suggests the name had recently been adopted. In the sixteenth century, Dutch maps referred to the sea as the Engelse Kanaal (English Channel) and by the 1590s, William Shakespeare used the word Channel in his history plays of Henry VI , suggesting that by that time, the name was popularly understood by English people. By the eighteenth century, the name English Channel

7920-444: The early 1850s. This was superseded at the beginning of the 20th century by floating pad bearing which automatically built up wedges of oil which could withstand bearing pressures of 500 psi or more. Steam-powered ships were named with a prefix designating their propeller configuration i.e. single, twin, triple-screw. Single-screw Steamship SS , Twin-Screw Steamship TSS , Triple-Screw Steamship TrSS . Steam turbine-driven ships had

8040-434: The eastern and western limits of the Channel is indicative of the tidal range being amplified further by resonance . Amphidromic points are the Bay of Biscay and varying more in precise location in the far south of the North Sea, meaning both those associated eastern coasts repel the tides effectively, leaving the Strait of Dover as every six hours the natural bottleneck short of its consequent gravity-induced repulsion of

8160-414: The end of the war and the project was abandoned. The naval blockade in the Channel and North Sea was one of the decisive factors in the German defeat in 1918. During the Second World War , naval activity in the European theatre was primarily limited to the Atlantic . During the Battle of France in May 1940, the German forces succeeded in capturing both Boulogne and Calais , thereby threatening

8280-411: The first screw propeller to an engine at his Birmingham works, an early steam engine , beginning the use of a hydrodynamic screw for propulsion. The development of screw propulsion relied on the following technological innovations. Steam engines had to be designed with the power delivered at the bottom of the machinery, to give direct drive to the propeller shaft . A paddle steamer's engines drive

8400-454: The following stormy weather. Over the centuries the Royal Navy slowly grew to be the most powerful in the world. The building of the British Empire was possible only because the Royal Navy eventually managed to exercise unquestioned control over the seas around Europe, especially the Channel and the North Sea. During the Seven Years' War , France attempted to launch an invasion of Britain . To achieve this France needed to gain control of

8520-402: The frontier of Switzerland to the English Channel", they reached the coast at the North Sea. Much of the British war effort in Flanders was a bloody but successful strategy to prevent the Germans reaching the Channel coast. At the outset of the war, an attempt was made to block the path of U-boats through the Dover Strait with naval minefields . By February 1915, this had been augmented by

8640-425: The hull as waves pass beneath it—becomes too great. Iron hulls are far less subject to hogging, so that the potential size of an iron-hulled ship is much greater. In the spring of 1840 Brunel also had the opportunity to inspect SS  Archimedes , the first screw-propelled steamship, completed only a few months before by F. P. Smith's Propeller Steamship Company. Brunel had been looking into methods of improving

8760-429: The hull structure. It should provide an unrestricted delivery of power by the propeller shaft. The combination of hull and stern tube must avoid any flexing that will bend the shaft or cause uneven wear. The inboard end has a stuffing box that prevents water from entering the hull along the tube. Some early stern tubes were made of brass and operated as a water lubricated bearing along the entire length. In other instances

8880-686: The line of retreat for the British Expeditionary Force . By a combination of hard fighting and German indecision, the port of Dunkirk was kept open allowing 338,000 Allied troops to be evacuated in Operation Dynamo . More than 11,000 were evacuated from Le Havre during Operation Cycle and a further 192,000 were evacuated from ports further down the coast in Operation Aerial in June 1940. The early stages of

9000-532: The modern era. Other Latin names for the sea include Oceanus Gallicus (the Gaulish Ocean) which was used by Isidore of Seville in the sixth century. The term British Sea is still used by speakers of Cornish and Breton , with the sea known to them as Mor Bretannek and Mor Breizh respectively. While it is likely that these names derive from the Latin term, it is possible that they predate

9120-723: The monarch of the United Kingdom retains the title Duke of Normandy in respect to the Channel Islands. The Channel Islands (except for Chausey ) are Crown Dependencies of the British Crown . Thus the Loyal toast in the Channel Islands is Le roi, notre Duc ("The King, our Duke"). The British monarch is understood to not be the Duke of Normandy in regards of the French region of Normandy described herein, by virtue of

9240-703: The most dangerous situation Britain faced in either world war. The Battle of Passchendaele in 1917 was fought to reduce the threat by capturing the submarine bases on the Belgian coast, though it was the introduction of convoys and not capture of the bases that averted defeat. In April 1918 the Dover Patrol carried out the Zeebrugge Raid against the U-boat bases. During 1917, the Dover Barrage

9360-402: The needs of the human migration to the United States and Australia. RMS  Umbria and her sister ship RMS  Etruria were the last two Cunard liners of the period to be fitted with auxiliary sails. Both ships were built by John Elder & Co. of Glasgow, Scotland, in 1884. They were record breakers by the standards of the time, and were the largest liners then in service, plying

9480-577: The newly formed Blue Funnel Line . His competitors rapidly copied his ideas for their own new ships. The opening of the Suez Canal in 1869 gave a distance saving of about 3,250 nautical miles (6,020 km; 3,740 mi) on the route from China to London. The canal was not a practical option for sailing vessels, as using a tug was difficult and expensive – so this distance saving was not available to them. Steamships immediately made use of this new waterway and found themselves in high demand in China for

9600-419: The operating costs of steamships were still too high in certain trades, so sail was the only commercial option in many situations. The compound engine, where steam was expanded twice in two separate cylinders, still had inefficiencies. The solution was the triple expansion engine, in which steam was successively expanded in a high pressure, intermediate pressure and a low pressure cylinder. The theory of this

9720-456: The paddle steamer Beaver , launched in 1836 to service Hudson's Bay Company trading posts between Puget Sound Washington and Alaska . The most testing route for steam was from Britain or the East Coast of the U.S. to the Far East . The distance from either is roughly the same, between 14,000 to 15,000 nautical miles (26,000 to 28,000 km; 16,000 to 17,000 mi), traveling down

9840-453: The performance of Great Britain ' s paddlewheels, and took an immediate interest in the new technology, and Smith, sensing a prestigious new customer for his own company, agreed to lend Archimedes to Brunel for extended tests. Over several months, Smith and Brunel tested a number of different propellers on Archimedes in order to find the most efficient design, a four-bladed model submitted by Smith. When launched in 1843, Great Britain

9960-795: The port of Savannah, Georgia , US, on 22 May 1819, arriving in Liverpool , England, on 20 June 1819; her steam engine having been in use for part of the time on 18 days (estimates vary from 8 to 80 hours). A claimant to the title of the first ship to make the transatlantic trip substantially under steam power is the British-built Dutch-owned Curaçao , a wooden 438-ton vessel built in Dover and powered by two 50 hp engines, which crossed from Hellevoetsluis , near Rotterdam on 26 April 1827 to Paramaribo , Surinam on 24 May, spending 11 days under steam on

10080-540: The power vacuum left by the retreating Romans, the Germanic Angles , Saxons , and Jutes began the next great migration across the North Sea. Having already been used as mercenaries in Britain by the Romans, many people from these tribes crossed during the Migration Period , conquering and perhaps displacing the native Celtic populations. The attack on Lindisfarne in 793 is generally considered

10200-512: The prefix TS . In the UK the prefix RMS for Royal Mail Steamship overruled the screw configuration prefix. The first steamship credited with crossing the Atlantic Ocean between North America and Europe was the American ship SS  Savannah , though she was actually a hybrid between a steamship and a sailing ship, with the first half of the journey making use of the steam engine. Savannah left

10320-541: The retaining ridge, causing the rock dam to fail and releasing lake water into the Atlantic. After multiple episodes of changing sea level, during which the Fosses Dangeard were largely infilled by various layers of sediment, another catastrophic flood some 180,000 years ago carved a large bedrock-floored valley, the Lobourg Channel , some 500 m wide and 25 m deep, from the southern North Sea basin through

10440-539: The revolutionary SS  Great Britain , also built by Brunel, became the first iron-hulled screw-driven ship to cross the Atlantic. SS Great Britain was the first ship to combine these two innovations. After the initial success of its first liner, SS  Great Western of 1838, the Great Western Steamship Company assembled the same engineering team that had collaborated so successfully before. This time however, Brunel, whose reputation

10560-478: The shaft, a thrust bearing is needed to transfer that load to the hull without excessive friction. SS  Great Britain had a 2 ft diameter gunmetal plate on the forward end of the shaft which bore against a steel plate attached to the engine beds. Water at 200 psi was injected between these two surfaces to lubricate and separate them. This arrangement was not sufficient for higher engine powers and oil lubricated "collar" thrust bearings became standard from

10680-482: The ship on an even keel and ensure that both paddle wheels remained in the water, driving the ship in a straight line. The hull was built of oak by traditional methods. She was the largest steamship for one year, until the British and American's British Queen went into service. Built at the shipyard of Patterson & Mercer in Bristol, Great Western was launched on 19 July 1837 and then sailed to London, where she

10800-558: The sinking of Doggerland , with Britain again becoming an island. As a busy shipping lane, the Channel experiences environmental problems following accidents involving ships with toxic cargo and oil spills. Indeed, over 40% of the UK incidents threatening pollution occur in or very near the Channel. One occurrence was the MSC Napoli , which on 18 January 2007 was beached with nearly 1700 tonnes of dangerous cargo in Lyme Bay,

10920-620: The sleeve (French: la manche ) shape of the Channel. Folk etymology has derived it from a Celtic word meaning 'channel' that is also the source of the name for the Minch in Scotland, but this name is not attested before the 17th century, and French and British sources of that time are clear about its etymology. The name in French has been directly adapted in other languages as either a calque , such as Canale della Manica in Italian or

11040-620: The southward tide (surge) of the North Sea (equally from the Atlantic). The Channel does not experience, but its existence is necessary to explain the extent of North Sea storm surges , such as necessitate the Thames Barrier , Delta Works , Zuiderzee works ( Afsluitdijk and other dams). In the UK Shipping Forecast the Channel is divided into the following areas, from the east: The full English Channel connecting

11160-521: The start of the 1870 tea season. The steamships were able to obtain a much higher rate of freight than sailing ships and the insurance premium for the cargo was less. So successful were the steamers using the Suez Canal that, in 1871, 45 were built in Clyde shipyards alone for Far Eastern trade. Throughout the 1870s, compound-engined steamships and sailing vessels coexisted in an economic equilibrium:

11280-612: The steam turbine is used together with gas engines. As of August 2017 the newest class of Steam Turbine ships are the Seri Camellia -class LNG carriers built by Hyundai Heavy Industries (HHI) starting in 2016 and comprising five units. Nuclear powered ships are basically steam turbine vessels. The boiler is heated, not by heat of combustion , but by the heat generated by nuclear reactor. Most atomic-powered ships today are either aircraft carriers or submarines . English Channel The English Channel , also known as

11400-570: The territory he and his Viking allies had previously conquered. The name "Normandy" reflects Rollo's Viking (i.e. "Northman") origins. The descendants of Rollo and his followers adopted the local Gallo-Romance language and intermarried with the area's inhabitants and became the Normans – a Norman French -speaking mixture of Scandinavians , Hiberno-Norse , Orcadians , Anglo-Danish , and indigenous Franks and Gauls . Rollo's descendant William, Duke of Normandy became king of England in 1066 in

11520-612: The time. Her boilers ran at 26 pounds per square inch (180 kPa) but relied on a substantial amount of superheat . Alfred Holt , who had entered marine engineering and ship management after an apprenticeship in railway engineering, experimented with boiler pressures of 60 pounds per square inch (410 kPa) in Cleator . Holt was able to persuade the Board of Trade to allow these boiler pressures and, in partnership with his brother Phillip launched Agamemnon in 1865. Holt had designed

11640-404: The voyage was actually made under sail. The first ship to make the transatlantic trip substantially under steam power may have been the British-built Dutch-owned Curaçao , a wooden 438-ton vessel built in Dover and powered by two 50 hp engines, which crossed from Hellevoetsluis , near Rotterdam on 26 April 1827 to Paramaribo , Surinam on 24 May, spending 11 days under steam on

11760-479: The way out and more on the return. Another claimant is the Canadian ship SS  Royal William in 1833. The British side-wheel paddle steamer SS  Great Western was the first steamship purpose-built for regularly scheduled trans-Atlantic crossings, starting in 1838. In 1836 Isambard Kingdom Brunel and a group of Bristol investors formed the Great Western Steamship Company to build a line of steamships for

11880-449: The way out and more on the return. Another claimant is the Canadian ship SS  Royal William in 1833. The first steamship purpose-built for regularly scheduled trans-Atlantic crossings was the British side-wheel paddle steamer SS  Great Western built by Isambard Kingdom Brunel in 1838, which inaugurated the era of the trans-Atlantic ocean liner . SS  Archimedes , built in Britain in 1839 by Francis Pettit Smith ,

12000-717: The wind, spreading the flames down the length of the ship, racing through the mahogany veneer and varnished bulkheads, as passengers jumped into the sea. The passing barque , Maurice of France rescued most of the survivors (67), and the Catarina of Norway picked up more (22) the next morning. As the blackened hulk was left to sink, all but 89 of 542 passengers were lost. Amongst the survivors were: Amongst those who drowned were: The fire and subsequent sinking has featured in multiple paintings, including: Steamship As steamships were less dependent on wind patterns, new trade routes opened up. The steamship has been described as

12120-635: The world! Singapore, the Cape, Alexandria , Gibraltar, Dover." However, on 25 July 1909 Louis Blériot made the first Channel crossing from Calais to Dover in an aeroplane. Blériot's crossing signalled a change in the function of the Channel as a barrier-moat for England against foreign enemies. Because the Kaiserliche Marine surface fleet could not match the British Grand Fleet, the Germans developed submarine warfare , which

12240-459: Was also a " Domnonia " (Devon) in Brittany as well. In February 1684 , ice formed on the sea in a belt 4.8 km (3.0 mi) wide off the coast of Kent and 3.2 km (2.0 mi) wide on the French side. Remnants of a mesolithic boatyard have been found on the Isle of Wight . Wheat was traded across the Channel about 8,000 years ago. "... Sophisticated social networks linked

12360-559: Was an English aristocrat who forwarded the design of the steam yacht in conjunction with the Scottish marine engineer Robert Napier . By World War II , steamers still constituted 73% of world's tonnage, and similar percentage remained in early 1950s. The decline of the steamship began soon thereafter. Many had been lost in the war, and marine diesel engines had finally matured as an economical and viable alternative to steam power. The diesel engine had far better thermal efficiency than

12480-471: Was at its height, came to assert overall control over design of the ship—a state of affairs that would have far-reaching consequences for the company. Construction was carried out in a specially adapted dry dock in Bristol , England. Brunel was given a chance to inspect John Laird 's 213-foot (65 m) (English) channel packet ship Rainbow —the largest iron- hulled ship then in service—in 1838, and

12600-483: Was by far the largest vessel afloat. Brunel's last major project, SS  Great Eastern , was built in 1854–1857 with the intent of linking Great Britain with India, via the Cape of Good Hope , without any coaling stops. This ship was arguably more revolutionary than her predecessors. She was one of the first ships to be built with a double hull with watertight compartments and was the first liner to have four funnels. She

12720-402: Was established in the 1850s by John Elder , but it was clear that triple expansion engines needed steam at, by the standards of the day, very high pressures. The existing boiler technology could not deliver this. Wrought iron could not provide the strength for the higher pressures. Steel became available in larger quantities in the 1870s, but the quality was variable. The overall design of boilers

12840-549: Was first recorded in Middle English in the 13th century and was borrowed from the Old French word chanel (a variant form of chenel 'canal'). By the middle of the fifteenth century, an Italian map based on Ptolemy 's description named the sea as Britanicus Oceanus nunc Canalites Anglie (Ocean of the Britons but now English Channel). The map is possibly the first recorded use of the term English Channel and

12960-452: Was fitted with two side-lever steam engines from the firm of Maudslay, Sons & Field , producing 750 indicated horsepower between them. The ship proved satisfactory in service and initiated the transatlantic route, acting as a model for all following Atlantic paddle-steamers. The Cunard Line 's RMS  Britannia began her first regular passenger and cargo service by a steamship in 1840, sailing from Liverpool to Boston. In 1845

13080-563: Was improved in the early 1860s, with the Scotch-type boilers – but at that date these still ran at the lower pressures that were then current. The first ship fitted with triple expansion engines was Propontis (launched in 1874). She was fitted with boilers that operated at 150 pounds per square inch (1,000 kPa) – but these had technical problems and had to be replaced with ones that ran at 90 pounds per square inch (620 kPa). This substantially degraded performance. There were

13200-523: Was in common usage in England . Following the Acts of Union 1707 , this was replaced in official maps and documents with British Channel or British Sea for much of the next century. However, the term English Channel remained popular and was finally in official usage by the nineteenth century. The French name la Manche has been used since at least the 17th century. The name is usually said to refer to

13320-405: Was laid down) and was soon followed by all subsequent liners. Most larger warships of the world's navies were propelled by steam turbines burning bunker fuel in both World Wars, apart from obsolete ships with reciprocating machines from the turn of the century, and rare cases of usage of diesel engines in larger warships. Steam turbines burning fuel remained in warship construction until the end of

13440-486: Was mastered at this level, steam engines were mounted on larger, and eventually, ocean-going vessels. Becoming reliable, and propelled by screw rather than paddlewheels, the technology changed the design of ships for faster, more economic propulsion. Paddlewheels as the main motive source became standard on these early vessels. It was an effective means of propulsion under ideal conditions but otherwise had serious drawbacks. The paddle-wheel performed best when it operated at

13560-495: Was re-sited with improved mines and more effective nets, aided by regular patrols by small warships equipped with powerful searchlights. A German attack on these vessels resulted in the Battle of Dover Strait in 1917 . A much more ambitious attempt to improve the barrage, by installing eight massive concrete towers across the strait was called the Admiralty M-N Scheme but only two towers were nearing completion at

13680-416: Was soon converted to iron-hulled technology. He scrapped his plans to build a wooden ship and persuaded the company directors to build an iron-hulled ship. Iron's advantages included being much cheaper than wood, not being subject to dry rot or woodworm , and its much greater structural strength. The practical limit on the length of a wooden-hulled ship is about 300 feet, after which hogging —the flexing of

13800-552: Was the Narrow Seas , a collective term for the channel and North Sea . As England (followed by Great Britain and the United Kingdom) claimed sovereignty over the sea, a Royal Navy Admiral was appointed with maintaining duties in the two seas. The office was maintained until 1822, when several European nations (including the United Kingdom) adopted a three-mile (4.8 km) limit to territorial waters. The word channel

13920-660: Was the 116-ton Aaron Manby , built in 1821 by Aaron Manby at the Horseley Ironworks , and became the first iron-built vessel to put to sea when she crossed the English Channel in 1822, arriving in Paris on 22 June. She carried passengers and freight to Paris in 1822 at an average speed of 8 knots (9 mph, 14 km/h). The American ship SS  Savannah first crossed the Atlantic Ocean arriving in Liverpool, England, on June 20, 1819, although most of

14040-456: Was the biggest liner throughout the rest of the 19th century with a gross tonnage of almost 20,000 tons and had a passenger-carrying capacity of thousands. The ship was ahead of her time and went through a turbulent history, never being put to her intended use. The first transatlantic steamer built of steel was SS  Buenos Ayrean , built by Allan Line Royal Mail Steamers and entering service in 1879. The first regular steamship service from

14160-399: Was the change from the paddle-wheel to the screw-propeller as the mechanism of propulsion. These steamships quickly became more popular, because the propeller's efficiency was consistent regardless of the depth at which it operated. Being smaller in size and mass and being completely submerged, it was also far less prone to damage. James Watt of Scotland is widely given credit for applying

14280-577: Was the world's first screw propeller -driven steamship for open water seagoing. She had considerable influence on ship development, encouraging the adoption of screw propulsion by the Royal Navy , in addition to her influence on commercial vessels. The first screw-driven propeller steamship introduced in America was on a ship built by Thomas Clyde in 1844 and many more ships and routes followed. The key innovation that made ocean-going steamers viable

14400-538: Was to become a far greater threat to Britain. The Dover Patrol , set up just before the war started, escorted cross-Channel troopships and prevented submarines from sailing in the Channel, obliging them to travel to the Atlantic via the much longer route around Scotland. On land, the German army attempted to capture French Channel ports in the Race to the Sea but although the trenches are often said to have stretched "from

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