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High-performance sailing. High-performance sailing is achieved with low forward surface resistance—encountered by catamarans, sailing hydrofoils, iceboats or land sailing craft—as the sailing craft obtains motive power with its sails or aerofoils at speeds that are often faster than the wind on both upwind and downwind points of sail ...
Sunfish (sailboat) The Sunfish is a personal-size, beach-launched sailing dinghy. It features a very flat, boardlike hull carrying an Oceanic lateen sail mounted to an un- stayed mast . Sunfish was developed by Alcort, Inc. and first appeared around 1952 as the "next generation" improvement on their original boat, the Sailfish.
The square sail, deployed via a spinning motion using 0.5-kilogram (1.1 lb) tip masses (key item 1 in figure at right), is 20 m (66 ft) on the diagonal and is made of a 7.5-micrometre (0.00030 in) thick sheet of polyimide (key item 3 in figure at right). The polyimide sheet had a mass of about 10 grams per square metre (0.033 oz/sq ft ...
Forces on sails. Aerodynamic force components for two points of sail. Left-hand boat: Down wind with stalled airfow— predominant drag component propels the boat with little heeling moment. Right-hand boat: Up wind (close-hauled) with attached airflow—predominant lift component both propels the boat and contributes to heel.
The Wayfarer is a wooden or fibreglass hulled fractional Bermuda rigged sailing dinghy of great versatility; used for short 'day boat' trips, longer cruises and for racing. Over 11,000 have been produced as of 2016. The boat is 15 feet 10 inches (4.83 m) long, and broad and deep enough for three adults to comfortably sail for several hours.
The International 210 is a racing keelboat that was originally built from plywood, with a single hard chine. In 1967 the class allowed fiberglass construction and most boats since that have been constructed of foam-cored fiberglass, with teak trim. The design has a fractional sloop masthead sloop rig with wooden spars, with aluminum spars ...