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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.
In sailing, a boom is a spar (pole), along the foot of a fore and aft rigged sail, that greatly improves control of the angle and shape of the sail. The primary action of the boom is to keep the foot flatter when the sail angle is away from the centerline of the boat. The boom also serves as an attachment point for more sophisticated control lines.
Final design includes a new 115' by 37' U-shaped, reinforced concrete pier, 60' long concrete floating docks to berth five vessels, and a gangway. The pier was designed to support the combined load of a 50-ton Mark V and a 70-ton marine travel lift used to lift the vessels out of the water and transport them to the maintenance facility. [12]
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.
The topsides on a boat, ship, watercraft, or floating production storage and offloading (FPSO) vessel, is that part of the hull between the waterline and the deck. [1] It includes the visible parts of the bow, stern, sheer, and, if present, tumblehome. On an offshore oil platform, topsides refers to the upper half of the structure, above the ...
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]
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