Leading lights , also known as range lights in the United States , are a pair of light beacons used in navigation to indicate a safe passage for vessels entering a shallow or dangerous channel; they may also be used for position fixing . At night, the lights are a form of leading line that can be used for safe navigation. The beacons consist of two lights that are separated in distance and elevation, so that when they are aligned, with one above the other, they provide a bearing. Range lights are often illuminated day and night.
40-629: The Plum Island Range Lights are a pair of range lights located on Plum Island in Door County , Wisconsin. Plum Island was transferred to the United States Fish and Wildlife Service in 2007 and became part of the Green Bay National Wildlife Refuge . Plum Island is seasonally open to the public for day-time use. Plum Island is an island at the western shore of Lake Michigan in the southern part of
80-553: A larger drainage basin . Nonetheless, for historical reasons the river retains the name Elbe, also because at the confluence point it is the Elbe that flows through the main, wider valley while the Vltava flows into the valley to meet the Elbe at almost a right angle, and thus appears to be the tributary river. Some distance lower down, at Litoměřice , the waters of the Elbe are tinted by the reddish Ohře . Thus augmented, and swollen into
120-411: A southerly course, emerging from the mountain glens at Jaroměř , where it receives Úpa and Metuje . Here the Elbe enters the vast vale named Polabí (meaning "land along the Elbe"), and continues on southwards through Hradec Králové (where Orlice flows in) and then to Pardubice , where it turns sharply to the west. At Kolín some 43 kilometres (27 mi) further on, it bends gradually towards
160-546: A stream 140 metres (460 ft) wide, the Elbe carves a path through the basaltic mass of the České Středohoří , churning its way through a picturesque, deep, narrow and curved rocky gorge. Shortly after crossing the Czech-German frontier, and passing through the sandstone defiles of the Elbe Sandstone Mountains , the stream assumes a north-westerly direction, which on the whole it preserves right to
200-762: A type of cable ferry that uses the current flow of the river to provide propulsion. Humans first lived in the northern Elbe region before about 200,000 years ago, during the Middle Paleolithic . Ptolemy recorded the Elbe as Albis ( Germanic for "river") in Germania Magna, with its source in the Asciburgis mountains ( Giant Mountains ), where the Germanic Vandalii then lived. The Elbe has long served as an important delineator of European geography. The Romans knew
240-694: Is inhabited by 24.4 million people; its biggest cities are Berlin , Hamburg , Prague , Dresden and Leipzig . First attested in Latin as Albis , the name Elbe means "river" or "river-bed" and is nothing more than the High German version of a word ( *albī ) found elsewhere in Germanic; cf. Old Norse river name Elfr , Swedish älv "river", Norwegian elv "river", Old English river name elf , and Middle Low German elve "river-bed". The Elbe (Labe) rises on
280-663: Is omnidirectional and is powered by an LED light. The original 4th order Fresnel lens was removed from the tower in 2015 and is on display at the Death's Door Maritime Museum in Gills Rock , WI. Nearby Pilot Island and Plum Island were two of four Wisconsin properties turned over by the U.S. Coast Guard to the United States Bureau of Land Management . Large expenses for toxic waste -site environmental remediation were an impediment to transfers and restoration of
320-631: The Giant Mountains of the northern Czech Republic before traversing much of Bohemia (western half of the Czech Republic), then Germany and flowing into the North Sea at Cuxhaven , 110 kilometres (68 miles) northwest of Hamburg . Its total length is 1,094 km (680 mi). The Elbe's major tributaries include the rivers Vltava , Saale , Havel , Mulde , Schwarze Elster , and Ohře . The Elbe river basin, comprising
360-581: The Nantucket Beacon , predecessor to the Nantucket Harbor Range shown above. [REDACTED] Media related to Leading lights at Wikimedia Commons Elbe The Elbe ( German: [ˈɛlbə] ; Czech : Labe [ˈlabɛ] ; Low German : Ilv or Elv ; Upper and Lower Sorbian : Łobjo , pronounced [ˈwɔbʲɔ] ) is one of the major rivers of Central Europe . It rises in
400-573: The Port of Liverpool . The first set of range lights in the United States were privately established by subscription at Newburyport Harbor in Massachusetts in 1788. Leading lights are sometimes designed to be movable, allowing their position to be shifted in the event of a change in the safe channel; these include one at Hilton Head, South Carolina , the original Chatham Light , and
440-591: The U.S. Army . In 1945, as World War II drew to a close, Germany came under attack from the armies of the western Allies advancing from the west and those of the Soviet Union advancing from the east. On 25 April 1945 these two forces linked up near Torgau , on the Elbe. The victorious countries marked the event unofficially as Elbe Day . From 1949 to 1990 the Elbe formed part of the Inner German border between East Germany and West Germany . During
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#1732783218410480-746: The United Kingdom , was signed on 14 February 1929, ending in 2028. Since 1993 the Czech Republic holds the former Czechoslovak legal position. Before Germany was reunited, waterway transport in Western Germany was hindered by the fact that inland navigation to Hamburg had to pass through the German Democratic Republic. The Elbe-Seitenkanal (Elbe Lateral Canal) was built between the West German section of
520-466: The Wendish Crusade of 1147. The Elbe delineated the western parts of Germany from the eastern so-called East Elbia , where soccage and serfdom were more strict and prevailed longer than westwards of the river, and where feudal lords held bigger estates than in the west. Thus incumbents of huge land-holdings became characterised as East Elbian Junkers . The Northern German area north of
560-516: The Elbe and its tributaries, has a catchment area of 148,268 square kilometres (57,247 sq mi), the twelfth largest in Europe. The basin spans four countries; however, it lies almost entirely just in two of them, Germany (65.5%) and the Czech Republic (33.7%, covering about two thirds of the nation's territory). On its southeastern edges, the Elbe river basin also comprises small parts of Austria (0.6%) and Poland (0.2%). The Elbe catchment area
600-517: The Elbe is subject to the tides , the tidal Elbe section is called the Unterelbe (Low Elbe). Soon the Elbe reaches Hamburg. Within the city-state the Unterelbe has a number of branch streams, such as Dove Elbe , Gose Elbe , Köhlbrand , Norderelbe (Northern Elbe), Reiherstieg , Süderelbe (Southern Elbe). Some of which have been disconnected for vessels from the main stream by dikes. In 1390
640-719: The German Twelfth Army located to the west of Berlin to guard against the advancing American and British forces. But, as the Western Front moved eastwards and the Eastern Front moved westwards, the German armies making up both fronts backed towards each other. As a result, the area of control of Wenck's army to his rear and east of the Elbe River had become a vast refugee camp for Germans fleeing from
680-522: The Gose Elbe (literally in English: shallow Elbe ) was separated from the main stream by a dike connecting the two then-islands of Kirchwerder and Neuengamme . The Dove Elbe (literally in English: deaf Elbe ) was diked off in 1437/38 at Gammer Ort. These hydraulic engineering works were carried out to protect marshlands from inundation, and to improve the water supply of the Port of Hamburg . After
720-835: The Low Elbe's two main anabranches Northern Elbe and the Köhlbrand reunite south of Altona -Altstadt, a locality of Hamburg. Right after both anabranches reunite, the Low Elbe is passed under by the New Elbe Tunnel (Neuer Elbtunnel) , the last structural road link crossing the river before the North Sea. At the bay Mühlenberger Loch in Hamburg at kilometre 634, the Northern Elbe and the Southern Elbe (here now
760-689: The Lower Elbe used to be called North Albingia in the Middle Ages. When the four Lutheran church bodies there united in 1977 they chose the name North Elbian Evangelical Lutheran Church . Other, administrative units were named after the river Elbe, such as the Westphalian Elbe département (1807–1813) and Lower Elbe département (1810), and the French département Bouches-de-l'Elbe (1811–1814). On 10 April 1945, General Wenck of
800-655: The Mittellandkanal and the Lower Elbe to restore this connection. When the two nations were reunited, works were begun to improve and restore the original links: the Magdeburg Water Bridge now allows large barges to cross the Elbe without having to enter the river. The often low water levels of the Elbe no longer hinder navigation to Berlin. The Elbe is crossed by many ferries, both passenger and car carrying. In downstream order, these include: Many of these ferries are traditional reaction ferries ,
840-516: The North Sea. The Elbe has always been navigable by commercial vessels, and provides important trade links as far inland as Prague . The river is linked by canals ( Elbe Lateral Canal , Elbe-Havel Canal , Mittellandkanal ) to the industrial areas of Germany and to Berlin . The Elbe-Lübeck Canal links the Elbe to the Baltic Sea , as does the Kiel Canal , whose western entrance is near
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#1732783218410880-606: The North Sea. The river rolls through Dresden and finally, beyond Meissen , enters on its long journey across the North German Plain passing along the former western border of East Germany , touching Torgau , Wittenberg , Dessau , Magdeburg , Wittenberge , and Hamburg on the way, and taking on the waters of the Mulde and Saale from the west, and those of the Schwarze Elster , Havel and Elde from
920-607: The Plum Island site. Both islands were finally transferred to the United States Fish and Wildlife Service in 2007 and became part of the Green Bay National Wildlife Refuge. Significant numbers of nesting colonial birds are found on the islands. The lighthouse keeper 's house and Coast Guard station were listed as being among Wisconsin's ten most endangered historic properties in April 2000. All of
960-600: The UK. The beacons may be artificial or natural. Two lights are positioned near one another. One, called the front light, is lower than the one behind, which is called the rear light. At night when viewed from a ship, the two lights only become aligned vertically when a vessel is positioned on the correct bearing. During the day, the lights may not easily be seen and therefore leading lights are often fitted with secondary visual aids, e.g. large red flags with wide black lines running down them. When both red flags and black lines line up,
1000-616: The approaching Soviet Army. Wenck took great pains to provide food and lodging for these refugees. At one stage, the Twelfth Army was estimated to be feeding more than a quarter of a million people every day. During the night of 28 April, Wenck reported to the German Supreme Army Command in Fuerstenberg that his Twelfth Army had been forced back along the entire front. According to Wenck, no attack on Berlin
1040-532: The cut-off meander Old Southern Elbe) used to reunite, which is why the bay is seen as the starting point of the Niederelbe (Lower Elbe). Leaving the city-state the Lower Elbe then passes between Holstein and the Elbe-Weser Triangle with Stade until it flows into the North Sea at Cuxhaven . Near its mouth, it passes the entrance to the Kiel Canal at Brunsbüttel before it debouches into
1080-436: The east. In its northern section both banks of the Elbe are characterised by flat, very fertile marshlands ( Elbe Marshes ), former flood plains of the Elbe now diked. At Magdeburg there is a viaduct, the Magdeburg Water Bridge , that carries a canal and its shipping traffic over the Elbe and its banks, allowing shipping traffic to pass under it unhindered. From the sluice of Geesthacht (at kilometre 586) on downstream
1120-698: The heavy inundation by the North Sea flood of 1962 the western section of the Southern Elbe was separated, becoming the Old Southern Elbe, while the waters of the eastern Southern Elbe now merge into the Köhlbrand, which is bridged by the Köhlbrandbrücke , the last bridge over the Elbe before the North Sea. The Northern Elbe passes the Elbe Philharmonic Hall and is then crossed under by the old Elbe Tunnel (Alter Elbtunnel) , both in Hamburg's city centre. A bit more downstream,
1160-554: The maritime structures on Plum Island were listed on the National Register of Historic Places in 2010. The Friends of Plum and Pilot Islands, Inc. have partnered with the United States Fish and Wildlife Service to restore the life-saving station and range lights on Plum Island. Upon taking control of the island, the United States Fish and Wildlife Service initially closed Plum Island to public access to "ensure necessary protection of ground nesting migratory birds." The island
1200-795: The mouth of the Elbe. The Elbe-Weser Shipping Channel connects the Elbe with the Weser . By the Treaty of Versailles the navigation on the Elbe became subject to the International Commission of the Elbe, seated in Dresden. The statute of the commission was signed in Dresden on 22 February 1922. Following articles 363 and 364 of the Treaty of Versailles, Czechoslovakia was entitled to lease its own harbour basin, Moldauhafen in Hamburg. The contract of lease with Germany, and supervised by
1240-648: The navigator knows that the vessel is on the correct bearing. The structures are usually painted to make them more prominent. Some major rivers, such as the Elbe River in Germany , have a series of leading lines. When it is necessary to make a turn, the navigator lines up the next pair of leading lights. This provides guidance from Hamburg to the sea, using successive pairs of leading lights. Leading lights were used in Great Britain as early as 1763 to mark
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1280-521: The north-west. At the village of Káraný , a little above Brandýs nad Labem , the Jizera enters in. At Mělník its stream is more than doubled in volume by the Vltava , a major river which winds northwards through Bohemia . Upstream from the confluence the Vltava is in fact much longer (434 kilometres (270 mi) against 294 kilometres (183 mi) of the Elbe so far), and has a greater discharge and
1320-832: The river as the Albis ; however, they made only one serious attempt to move the border of their empire forward from the Rhine to the Elbe, and this attempt failed with the Battle of the Teutoburg Forest in 9 AD, after which they never seriously tried again. In the Middle Ages the Elbe formed the eastern limit of the Empire of Charlemagne (King of the Franks from 769 to 814). The river's navigable sections were essential to
1360-632: The same time as the United States Life-Saving Station that was established on Plum Island in 1895-6, though the two stations would be separately administered until the US Lighthouse Service and USCG merged in 1939. The lights were originally lit in 1897 and are 1,650 feet (500 m) apart, aligned on a 330° bearing line to guide boats safely into the Porte des Morts Passage . The Plum Island front range light
1400-461: The slopes of Mt. Violík at an elevation of 1,386 metres (4,547 ft) in the Giant Mountains on the northwest borders of the Czech Republic. Of the numerous small streams whose waters compose the infant river. After plunging down the 30 metres (98 ft) of the Elbe Falls , the latter stream unites with the steeply torrential Bílé Labe , and thereafter the united stream of the Elbe pursues
1440-704: The success of the Hanseatic League in the Late Middle Ages , and much trade was carried on its waters. From the early 6th century Slavic tribes (known as the Polabian Slavs ) settled in the areas east of the rivers Elbe and Saale (which had been depopulated since the 4th century). In the 10th century the Ottonian Dynasty (dominant from 919 to 1024) began conquering these lands; a slow process of Germanization ensued, including
1480-431: The town of Washington in Door County , Wisconsin , United States. Plum Island is physically located between the mainland of Door County and Washington Island, in the channel known as Death's Door due to the large number of shipwrecks in the channel. A lighthouse was first built on Plum Island in 1849, but was abandoned in 1858 and the light moved to nearby Pilot Island. The front and rear range lights were built at
1520-468: Was opened to the public for seasonal day-time use in 2017. The island can be visited by private boat, kayak, or limited ferry from Gills Rock. Multiple hiking trails are available, however, buildings on the island are not generally accessible. Leading lights In some cases the two beacons are unlighted, in which case they are known as a range in the United States or a transit in
1560-427: Was originally identical to the front range light of the Baileys Harbor Range Lights , but was replaced by a modern skeletal light in 1964 and both lights were automated in 1969. The rear range light is the original tower and was added to the National Register of Historic Places in 1984, as the Plum Island Range Rear Light, reference number #84003659. The front light is directional, aligned on 330.5° true. The rear light
1600-434: Was possible as support from Busse's Ninth Army could no longer be expected. Instead, starting April 24, Wenck moved his army towards the Forest of Halbe , broke into the Halbe pocket and linked up with the remnants of the Ninth Army , Hellmuth Reymann 's "Army Group Spree", and the Potsdam garrison. Wenck brought his army, remnants of the Ninth Army, and many civilian refugees across the Elbe and into territory occupied by
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