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Floating Dock (impounded)
A floating dock, floating harbour or wet dock is a dock alongside a tidal waterway which maintains a 'constant' level, despite the changing tides. Operation At the most basic level, a floating dock is isolated from tidal water by a lock gate, at least, although in many dock systems the entrance is more complex than this. Development and early docks London The first wet dock was Howland Great Wet Dock or Greenland Dock, built in London at the end of the 17th century. This was not a commercial dock and had no warehouses, but was intended solely for ship replenishment and refitting. Liverpool (Old Dock) In 1715 the first commercial wet dock, Liverpool's Old Dock, opened. Early docks were of simple construction: a single lock gate isolating them from the tidal water. The gates were opened during the last hour r twoof the rising tide, giving a short window of opportunity to let ships in on the rise and releasing outgoing ships while the tide was on the turn. The gates wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Dock Liverpool 7
Albert may refer to: Companies * Albert (supermarket), a supermarket chain in the Czech Republic * Albert Heijn, a supermarket chain in the Netherlands * Albert Market, a street market in The Gambia * Albert Productions, a record label * Albert Computers, Inc., a computer manufacturer in the 1980s Entertainment * ''Albert'' (1985 film), a Czechoslovak film directed by František Vláčil * ''Albert'' (2015 film), a film by Karsten Kiilerich * ''Albert'' (2016 film), an American TV movie * ''Albert'' (Ed Hall album), 1988 * "Albert" (short story), by Leo Tolstoy * Albert (comics), a character in Marvel Comics * Albert (''Discworld''), a character in Terry Pratchett's ''Discworld'' series * Albert, a character in Dario Argento's 1977 film ''Suspiria'' Military * Battle of Albert (1914), a WWI battle at Albert, Somme, France * Battle of Albert (1916), a WWI battle at Albert, Somme, France * Battle of Albert (1918), a WWI battle at Albert, Somme, France People * Albert (given ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Cut (Bristol)
The New Cut is an artificial waterway which was constructed between 1804 and 1809 to divert the tidal river Avon through south and east Bristol, England. This was part of the process of constructing Bristol's Floating Harbour, under the supervision of engineer William Jessop. The cut runs from Totterdown Basin at the eastern end of St Phillip's Marsh, near Temple Meads, to the Underfall sluices at Rownham in Hotwells and rejoining the original course of the tidal Avon. The length of the cut is approximately and with the addition of short sections of the original course of the river Avon at either end, connecting Netham weir and Totterdown basin, and the Underfall sluices to the mouth of the Entrance lock at Cumberland Basin, the overall watercourse length is . No ships have navigated the cut on a regular basis since the 1930s, but it is still possible for boats to proceed as far as Netham weir with care. Construction The Bristol Docks Company was formed to construct the Fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jesse Hartley
Jesse Hartley (21 December 1780 – 24 August 1860) was Civil Engineer and Superintendent of the Concerns of the Dock Estate in Liverpool, England between 1824 and 1860. Hartley's career Despite having no experience of dock building, Hartley was the first full-time professional dock engineer in the world. He had previously worked for his father Bernard Hartley, a stonemason, architect and bridgemaster John Carr, and the Duke of Devonshire. Initially he was appointed Deputy Dock Surveyor to John Foster Jr. However, due to John Foster Jr. resigning three days later, he was promoted to Acting Dock Surveyor. During his service, he not only built new docks, but also modernised all of the existing docks with the exception of the Old Dock (opened in 1715), which had become disused and filled in. The docks at Liverpool grew from during his tenure. In 1831 he was appointed to convert the Manchester Bolton & Bury Canal to a railway line. He persuaded the company to keep the canal open ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Half Tide Dock
A half tide dock is a partially tidal dock. Typically the dock is entered at high tide. As the tide ebbs a sill or weir prevents the level dropping below a certain point, meaning that the ships in the dock remain afloat, although they still rise and fall with the tides above this. Half tide docks are particularly useful in areas with a large tidal range. The sill of a half tide dock must be set sufficiently far below the daily high tide mark to allow ships to pass over it. Obviously this was easier to achieve with small ships of shallow draught, or in areas with a large tidal range. Inside the dock, the depth of water beneath the sill's level depends only on the depth to which the dock was excavated, although this obviously increases construction costs. The importance of the sill, and the tide's height above it, is reflected by these dock sills becoming an important local datum level and for tide tables being calculated for heights above it (i.e. clear draught in and out of the do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Branch Dock
A branch dock is a dock that forms part of a large harbour system of interlinked docks. Branch docks are terminal branches of a main floating dock. They are ''not'' isolated from the main dock by gates or locks and they share the same water level. Where docks join other docks or basins through gates, these are usually given a distinct name rather than being termed a 'branch'. Floating docks that are separated from tidal waters by a half tide dock commonly have related names such as Sandon Dock and Sandon Half Tide Dock. Branch docks are usually numbered, following the name of their main dock, i.e. ' Gladstone Number Three Branch Dock', rather than individually named. The purpose of a branch dock is to increase the quayside frontage and space for warehouses, for a given volume of water,The cost of excavation for a dock is roughly proportional to its volume. and without requiring the cost and complexity of more locks. Branch docks first appeared in the 18th century, but their h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bow Locks
Bow Locks No. 20 () is a set of bi-directional locks in Bromley-by-Bow in the London Borough of Tower Hamlets and Newham. The locks link the tidal Bow Creek to the River Lee Navigation, which is a canalised river. These locks were first built in 1850 and then rebuilt in 1930, at the same time as the Prescott Channel was cut nearby. At high tide, the tide from Bow Creek formerly flowed through Bow Locks, to raise the level of the canals, such as the Limehouse Cut. In 2000, these locks were modified to keep the tide out, to reduce silting in the canal system. History Bow Locks has a long history, as the first recorded mention of a water control structure at the site was during the reign of Edward I, when Henry de Bedyk, the prior at Halliwell Priory and owner of the nearby tide mills. He erected a structure some time before 1307. Despite juries ruling in 1345 and 1362 that it should be removed, it remained in place, and its existence was not contested when commissioners were app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallasey Dock
The Wallasey Dock, was a dock at Birkenhead, Wirral Peninsula, England. The dock was accessed via East Float to the west, until Wallasey Dock was filled at the turn of the millennium. History Construction began in 1874 and the dock opened in 1877, replacing the Great Low Water Basin of 1863, which had opened directly onto the River Mersey to the east. Situated between Alfred Dock to the north and Morpeth Dock to the south, access to the river was westwards through East Float. The dock sheds were used for grain storage and then for imported livestock. In 1890, a pumping station was installed on the river wall adjoining to the dock. This slowly silted the dock, and by the 1960s the dock had silted up, leaving the dock derelict by 1992. In 2001, Wallasey Dock was filled to provide space for a vehicle park at the new Twelve Quays Twelve Quays is a ferry terminal and business park which is located between East Float and the River Mersey at Birkenhead, in England. Twelve Q ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huskisson Dock
Huskisson Dock is a dock on the River Mersey, England, which forms part of the Port of Liverpool. It is situated in the northern dock system in Kirkdale. Huskisson Dock consists of a main basin nearest the river wall and two branch docks to the east. It is connected to Canada Dock to the north and Sandon Half Tide Dock to the south. History The dock was designed by Jesse Hartley and opened in 1852. It is named after a former MP and Treasurer of the Navy, William Huskisson. Initially dealing in timber, it later traded in grain and provided berthing facilities for passenger ships on North American routes. The main basin was enlarged and a branch dock created in the 1860s to accommodate larger ships. The dock was expanded again at the turn of the twentieth century when two further branch docks were added by Anthony George Lyster. World War II On 3 May 1941 Huskisson Branch Dock Number 2 was the site of the explosion during Liverpool's May Blitz, when 1,000 tons of explosives on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caisson (lock Gate)
A caisson is a form of lock gate. It consists of a large floating iron or steel box. This can be flooded to seat the caisson in the opening of the dock to close it, or pumped dry to float it and allow it to be towed clear of the dock. Chevron gates Most locks are closed by chevron or mitre gates rather than by caissons. These are pairs of hinged gates that form a "V" shape, with the deeper water outside the V. Water pressure thus holds them closed. These gates can be opened and closed quickly, so they are used for canal locks, to change levels, and also for most freight docks. As the function of a freight dock is to ''enclose'' deep water, such gates point inwards. A graving or dry dock, in contrast, ''excludes'' water, and so their gates point outwards. Hinged gates are relatively complicated, and so expensive, to construct. Large gates require powered machinery to operate them, machinery that must be provided for each set of gates. Chevron gates can also only resist deep w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallasey Dock Impounding Station - Geograph
Wallasey () is a town within the Metropolitan Borough of Wirral, in Merseyside, England; until 1974, it was part of the historic county of Cheshire. It is situated at the mouth of the River Mersey, at the north-eastern corner of the Wirral Peninsula. At the 2011 Census, the population was 60,284. History Toponymy The name of Wallasey originates from the Germanic word '' Walha'', meaning a Briton, a Welshman, which is also the origin of the name Wales. The suffix “''-ey''” denotes an island or area of dry land. Originally the higher ground now occupied by Wallasey was separated from the rest of Wirral by the creek known as Wallasey Pool (which later became the docks), the marshy areas of Bidston Moss and Leasowe, and sand dunes along the coast. Early history Within the boundaries of the historic county of Cheshire, the area was sparsely populated before the 19th century. Horse races organised for the Earls of Derby on the sands at Leasowe in the 16th and 17th centuri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Mersey
The River Mersey () is in North West England. Its name derives from Old English and means "boundary river", possibly referring to its having been a border between the ancient kingdoms of Mercia and Northumbria. For centuries it has formed part of the boundary between the Historic counties of England, historic counties of Lancashire and Cheshire. The Mersey starts at the confluence of the River Tame, Greater Manchester, River Tame and River Goyt in Stockport. It flows westwards through south Manchester, then into the Manchester Ship Canal at Irlam, becoming a part of the canal and maintaining its water levels. After it exits the canal, flowing towards Warrington where it widens. It then narrows as it passes between Runcorn and Widnes. From Runcorn the river widens into a large estuary, which is across at its widest point near Ellesmere Port. The course of the river then turns northwards as the estuary narrows between Liverpool and Birkenhead on the Wirral Peninsula to the west ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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