Class | 15-metre |
---|---|
Designer(s) | Charles Ernest Nicholson |
Builder | Camper & Nicholsons Gosport, Hampshire |
Launched | 1912 |
Owner(s) | Charles Carrick Allom |
Fate | Broken up 1924 |
The 15mR racing yacht Istria was designed by Charles Ernest Nicholson and built at the Camper & Nicholsons yard in Gosport, Hampshire, in 1912 for Sir Charles Carrick Allom (Yard number 204). She was the first large yacht to be built with laminated frames and planking to save weight, the first to feature a Marconi topmast [1] and the first to feature a dinghy cockpit. She was broken up in 1924 in Norway.
In order to reduce the wetted surface yet retain stability, Istria's hull shape consisted of a long forward overhang and a wide beam at the waterline. Yachting Monthly described her as "Short on the waterline, with large displacement, a fine tail and a useful snout, she would not have been a pretty vessel had she not proved clever. But as I have always insisted that efficiency is beauty, the blue 'fifteen' was admired". Her midsection also featured a distinctive tumblehome, a feature that Nicholson would repeat in subsequent boats designed to the IYRU International rule. [2]
Nicholson devised a topmast that slotted atop the mainmast, and fitted with a track to fasten the topsail luff. This design eliminated the need for a topsail yard, thus permitting a lighter and loftier rig as well as easier hoisting and dowsing. Nicholson produced similar rigs for Pamela and Paula III and the rig was dubbed "Marconi mast" because the elaborate standing rigging reminisced a radio mast.
For the sake of safety in case a yacht should flounder, the rules at the time stated that a dinghy should be on the deck of the yacht during racing, and was typically stored over the main skylight. In order to reduce the windage, Nicholson created an open dinghy with a gunwale overhang which could be recessed into an aperture of the deck of the yacht, the open dinghy cockpit thus serving as the yacht's cockpit. When the Istria attended her first race, all the opposition protested against the arrangement. However, after successfully proving that the dinghy could be launched in under 10 seconds, the protests subsided.
Length on deck | 23.94 m |
Load waterline length | 14.7 8m |
Beam | 4.16 m |
Draught | 2.82 m |
Displacement | 40 tons |
In her first season, the Istria started in 31 races in European waters [3] and won 29 of them. Originally 60 races had been planned but due to very strong winds there were only 43 starts. Over the following seasons up to the start of the First World War; The Istria won a further 43 races from 50 starts, thus making a very impressive 72 wins from 81 starts.
The Istria''s success briefly encouraged Allom to build a challenger for the America's Cup in 1913, but he decided to concentrate on improving the Istria when she faced a stiffening competition from newer European boats. [3] The Istria' remained dominant throughout her racing career.
A sloop is a sailboat with a single mast typically having only one headsail in front of the mast and one mainsail aft of (behind) the mast. Such an arrangement is called a fore-and-aft rig, and can be rigged as a Bermuda rig with triangular sails fore and aft, or as a gaff-rig with triangular foresail(s) and a gaff rigged mainsail.
A sailboat or sailing boat is a boat propelled partly or entirely by sails and is smaller than a sailing ship. Distinctions in what constitutes a sailing boat and ship vary by region and maritime culture.
A sailing vessel's rig is its arrangement of masts, sails and rigging. Examples include a schooner rig, cutter rig, junk rig, etc. A rig may be broadly categorized as "fore-and-aft", "square", or a combination of both. Within the fore-and-aft category there is a variety of triangular and quadrilateral sail shapes. Spars or battens may be used to help shape a given kind of sail. Each rig may be described with a sail plan—formally, a drawing of a vessel, viewed from the side.
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A topsail ("tops'l") is a sail set above another sail; on square-rigged vessels further sails may be set above topsails.
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Charles Ernest Nicholson was a British yacht designer.
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Camper and Nicholson was a yacht design and manufacturing company based in Gosport, England, for over two hundred years, constructing many significant vessels, such as Gipsy Moth IV and Prince Philip's yacht Bloodhound. Its customers included Thomas Sopwith, William Kissam Vanderbilt II and George Spencer-Churchill, 6th Duke of Marlborough. Its yachts competed in The America's Cup, The Fastnet Race, the Olympics, the Ocean Race and many other yacht races.
A sail plan is a drawing of a sailing craft, viewed from the side, depicting its sails, the spars that carry them and some of the rigging that supports the rig. By extension, "sail plan" describes the arrangement of sails on a craft. A sailing craft may be waterborne, an iceboat, or a sail-powered land vehicle.
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