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The caisson lock is a type of canal lock in which a narrowboat is floated into a sealed watertight box and raised or lowered between two different canal water levels. It was invented in the late 18th century as a solution to the problem posed by the excessive demand for water when conventional locks were used to raise and lower canal boats ...
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. Graving docks at Birkenhead, closed by a variety of ship caissons and floating (sliding) caissons.
Slipway - Wikipedia ... Slipway
A dock plate is form of portable bridge used to both span the gap and adjust for elevation differences between a truck bed and a loading dock or warehouse floor. [1] Other devices used to achieve the same ends include dock boards, and electric and pneumatic dock levelers and lifts. [2][3] These various devices differ in construction ...
Shiplift. The Syncrolift shiplift is a piece of equipment for lifting boats, ships and vessels onto land and back at sea for maintenance work or repair. The vessel is maneuvered over a submerged cradle, which is then lifted by a set of synchronized hoists or winches. The vessel can be worked upon in place, or it can be moved inland.
Anderton Boat Lift. The Anderton Boat Lift is a two- caisson lift lock near the village of Anderton, Cheshire, in North West England. It provides a 50-foot (15.2 m) vertical link between two navigable waterways: the River Weaver and the Trent and Mersey Canal. The structure is designated as a scheduled monument, and is included in the National ...
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