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The topping lift indicated Topping lift on a US Yachts US 22 sailboat 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 ]
The earliest B&R rig was the result of wind tunnel tests and research by Lars Bergstrom and Sven Ridder at Sweden's Royal Institute of Technology. [6] The first generation, built around 1970, included a backstay and was used on many production boats.
The gooseneck pivots allowing the other end of the boom to move freely. The clew (back corner) of the sail attaches to the free end of the boom. The entire foot of the sail may be attached to the boom or just the clew. If the foot is not attached to the boom, the rig is known as loose footed. A boom may be found on small headsails.
Running rigging is the rigging of a sailing vessel that is used for raising, lowering, shaping and controlling the sails on a sailing vessel—as opposed to the standing rigging, which supports the mast and bowsprit. Running rigging varies between vessels that are rigged fore and aft and those that are square-rigged.
Types of rig (ie the configuration of masts and sails) used on sailing vessels and specific items of rigging used on sailing vessels, from full-rigged ships to sailboats Contents Top
Clewlines (green) and buntlines (red) for a single sail. The sail here is semi-transparent; fainter lines are running behind it. Clewlines and buntlines are lines used to handle the sails of a square rigged ship. The leechlines are clearly visible running inwards and upwards from the edges of the sail.
While under sail, the opposite force to the vang is supplied by the sail itself. When the sail is furled, a topping lift supplies the upward force on the boom. Some line vang systems incorporate a piston to provide the topping lift force and to damp oscillations. Hydraulic vangs can inherently act in the topping lift role.
Running rigging on a sailing yacht: 1. Main sheet 2. Jib sheet 3. Boom vang 4. Downhaul 5. Jib halyard. Rigging comprises the system of ropes, cables and chains, which support and control a sailing ship or sail boat's masts and sails. Standing rigging is the fixed rigging that supports masts including shrouds and stays.