Model yachting is the pastime of building and racing model yachts. It has always been customary for ship-builders to make a miniature model of the vessel under construction, which is in every respect a copy of the original on a small scale, whether steamship or sailing ship. There are fine collections to be seen at both general interest museums such as the Victoria and Albert Museum in London and at many specialized maritime museums worldwide. Many of these models are of exquisite workmanship, every rope, pulley or portion of the engine being faithfully reproduced. In the case of sailing yachts, these models were often pitted against each other on small bodies of water, and hence arose the modern pastime. It was soon seen that elaborate fittings and complicated rigging were a detriment to rapid handling, and that, on account of the comparatively stronger winds in which models were sailed, they needed a greater draught. For these reasons modern model yachts, which usually have fin keels, are of about 15% or 20% deeper draught than full-sized vessels, while rigging and fittings have been reduced to absolute simplicity. This applies to models built for racing and not to elaborate copies of steamers and ships, made only for show or for " toy cruising." Model yacht clubs Model yacht clubs have existed for many years in Great Britain, Ireland and the United States, most of them holding a number of regattas during each season. The rules do not generally require the owner or skipper of a model to build his own craft, but among model yachtsmen the designing and the construction of the boats constitute as important and interesting a part of the sport as the actual sailing. Sail–driven yachts Construction and rigging Traditional models are constructed of some light, seasoned wood, such as pine, preferably white pine, white cedar or mahogany free from knots. The hull may either be hollowed out of a solid block of wood, or cut from layers of planks in the so-called bread-and-butter style, or planked over a frame of keel and cross-sections. The first two methods are used in constructing dugout models. Hollowing out from the solid block entails a great deal of labor and has therefore fallen into disfavor. In the bread-and-butter style a number of planks, which have been shaped to the horizontal sections of the model and from which the middle has been sawn