Oranjesluizen, Lock system in Amsterdam, Netherlands.
The Oranjesluizen are a lock system in Amsterdam comprising four navigation chambers, including three smaller ones for recreational boats and one large lock measuring 24 by 200 meters (656 feet). The system connects different waterways and regulates water levels between them.
King William III initiated construction in 1870 by laying the foundation stone, with the system completed in 1872. The locks were built to manage the city's growing maritime activity and its need for better water control.
The locks are named after Dutch monarchs and reflect the city's relationship with water management. Both locals and visitors use them daily to cross the IJ river and experience the connection between different waterways.
About 120,000 vessels navigate through the system per year, and it also provides safe passage for pedestrians and cyclists. The locks operate automatically, and visitors can watch boats pass through from the surrounding areas.
The largest lock, Prins Willem-Alexander, uses a special hydro base system where the sliding doors move on a thin water layer. This engineering detail made it one of the most innovative locks of its era.
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