Recent from talks
Oosterdok
Knowledge base stats:
Talk channels stats:
Members stats:
Oosterdok
The Oosterdok ('Eastern Dock') is a former wet dock in Amsterdam. It was created in 1831–1832 by constructing the Oosterdoksdam and the Oosterdoksluis, forming a reliable deep port closed off from the tidal IJ.
The harbor of Amsterdam was basically a place were ships could conveniently anchor on the IJ, immediately before the city. Here smaller ships could attach to a series of interconnected mooring poles called De Laag. Larger ships anchored at a small distance from De Laag. There were docks immediately connected to the city, but these were open to the tides. Larger ships did not attach to a quay to unload, but transloaded goods on boats that brought these into the city via the many canals.
The approaches to the harbor of Amsterdam suffered from silting up. The most serious problem were the shallows near the island of Pampus in the Zuiderzee. After the French period, King William I of the Netherlands attempted to revitalize the Dutch economy by improving land- and waterways. One of these was the Noordhollandsch Kanaal, which was dug from Amsterdam to Nieuwediep (Den Helder) between 1820 and 1824.
The Amsterdam harbor gradually became unsuitable for big ships. Ships also suffered damage from anchoring before Amsterdam. This was caused by the bow and stern cutting into soft clay below the keel at ebb. The center of the ship would cut less deeply into the underground, and therefore supported the ship at ebb, causing the so-called katterug (cat's spine, or cat pose). The unsuitability of the harbor meant that ships had to anchor further away.
By the late 18th century the situation had become rather desperate. At that time, the navigable part of the IJ consisted of a trench of about 400 m wide and 7-12 m deep. The 'harbor' of Amsterdam was a mud bank south of this trench, with a depth of slightly more than a meter. Therefore only small vessels could use the harbor. Ships had to unload at considerable distance. During a neap tide with a harsh south or south west wind, the harbor would occasionally go completely dry.
The inhabitants of Amsterdam knew that in the past, vessels sailing to nearby European ports had anchored in the center of the city, at the Damrak. When efforts to remedy the problem by dredging had failed, they turned to science. In 1775 Jan van Houweningen suggested to give the shores of the IJ before the city a more regular profile, so the currents would increase, instead of being slowed by the many works present. This idea was not executed.
In 1805 the Koninklijke Hollandsche Maatschappij der Wetenschappen offered a double gold medal in a contest to solve the problem. The contestant had to prove the causes of the silting up of the Amsterdam harbor, and propose a way to remedy this problem. Jan Blanken, the engineer who later designed the Noordhollandsch Kanaal won the contest.
Blanken's idea was rather original. Instead of trying to remedy the situation by attempting to move the currents closer to the city, he proposed to bring the city closer to the currents. Blanken proposed to lay a dam on the southern side of the IJ, north of the Laag. This would create a single large wet dock in front of the city. The plan was about to be put in motion when the French Empire fell in 1813.
Hub AI
Oosterdok AI simulator
(@Oosterdok_simulator)
Oosterdok
The Oosterdok ('Eastern Dock') is a former wet dock in Amsterdam. It was created in 1831–1832 by constructing the Oosterdoksdam and the Oosterdoksluis, forming a reliable deep port closed off from the tidal IJ.
The harbor of Amsterdam was basically a place were ships could conveniently anchor on the IJ, immediately before the city. Here smaller ships could attach to a series of interconnected mooring poles called De Laag. Larger ships anchored at a small distance from De Laag. There were docks immediately connected to the city, but these were open to the tides. Larger ships did not attach to a quay to unload, but transloaded goods on boats that brought these into the city via the many canals.
The approaches to the harbor of Amsterdam suffered from silting up. The most serious problem were the shallows near the island of Pampus in the Zuiderzee. After the French period, King William I of the Netherlands attempted to revitalize the Dutch economy by improving land- and waterways. One of these was the Noordhollandsch Kanaal, which was dug from Amsterdam to Nieuwediep (Den Helder) between 1820 and 1824.
The Amsterdam harbor gradually became unsuitable for big ships. Ships also suffered damage from anchoring before Amsterdam. This was caused by the bow and stern cutting into soft clay below the keel at ebb. The center of the ship would cut less deeply into the underground, and therefore supported the ship at ebb, causing the so-called katterug (cat's spine, or cat pose). The unsuitability of the harbor meant that ships had to anchor further away.
By the late 18th century the situation had become rather desperate. At that time, the navigable part of the IJ consisted of a trench of about 400 m wide and 7-12 m deep. The 'harbor' of Amsterdam was a mud bank south of this trench, with a depth of slightly more than a meter. Therefore only small vessels could use the harbor. Ships had to unload at considerable distance. During a neap tide with a harsh south or south west wind, the harbor would occasionally go completely dry.
The inhabitants of Amsterdam knew that in the past, vessels sailing to nearby European ports had anchored in the center of the city, at the Damrak. When efforts to remedy the problem by dredging had failed, they turned to science. In 1775 Jan van Houweningen suggested to give the shores of the IJ before the city a more regular profile, so the currents would increase, instead of being slowed by the many works present. This idea was not executed.
In 1805 the Koninklijke Hollandsche Maatschappij der Wetenschappen offered a double gold medal in a contest to solve the problem. The contestant had to prove the causes of the silting up of the Amsterdam harbor, and propose a way to remedy this problem. Jan Blanken, the engineer who later designed the Noordhollandsch Kanaal won the contest.
Blanken's idea was rather original. Instead of trying to remedy the situation by attempting to move the currents closer to the city, he proposed to bring the city closer to the currents. Blanken proposed to lay a dam on the southern side of the IJ, north of the Laag. This would create a single large wet dock in front of the city. The plan was about to be put in motion when the French Empire fell in 1813.
Recent media