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Topping lift. The topping lift (more rarely known as an uphaul) is a line which applies upward force on a boom on a sailboat. Part of the running rigging, topping lifts are primarily used to hold a boom up when the sail is lowered. [1] This line would run from near the free end of the boom (s) forward to the top of the mast.
The boat lift was designed during the Canal du Centre's modernisation program in order to replace a system of two locks and four 16-metre (52 ft) lifts dating from 1888 to 1919. [1] The canal itself began operations in 1879 and its locks and lifts were able to accommodate vessels of up to 300 tonnes.
Geheyan dam boat lift, also in Hubei Province, capable of lifting vessels of 300 tons displacement. The dam was completed in 1994, but technical difficulties delayed the opening of the ship lift for four more years. Longtan dam boat lift, capacity to lift vessels of 250 tons, in a basin 40×10.8×1.8 meters, and a vertical lift of 68.5 meters. [2]
Shiplift. A shiplift is a modern alternative for a slipway, a floating dry dock or a graving dry dock. A shiplift is used to dry dock and launch ships. It consists of a structural platform that is lifted and lowered exactly vertically, synchronously by a number of hoists. First, the platform is lowered underwater, then the ship is floated above ...
The Peterborough Lift Lock is a boat lift located on the Trent Canal in the city of Peterborough, Ontario, Canada, and is Lock 21 on the Trent-Severn Waterway. For many years, the lock's dual lifts were the highest hydraulic boat lifts in the world, raising boats 65 ft (20 m). This was a considerable accomplishment in the first years of the ...
The tensioned portion of the rope would fasten the ship to the quay, hoist a foresail, lift a spar into position on the mast or be used to transfer cargo to or from a dock or lighter. A capstan is a vertical- axled rotating machine developed for use on sailing ships to multiply the pulling force of sailors when hauling ropes, cables , and hawsers .
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 ...
Transom (nautical) Vertical transom and stern of a modern cargo ship. In some boats and ships, a transom is the aft transverse surface of the hull that forms the stern of a vessel. Historically, they are a development from the canoe stern (or "double-ender") wherein which both bow and stern are pointed. Transoms add both strength and width to ...
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