These boats are also used as recreational sailboats. Boats used in Gaelic Ireland include canoes, currachs, sailboats and Irish galleys. The vast majority of multihull sailboats are catamarans. The Brooklyn Marina is a recreational facility for sailboats and power boats. Scuba diving and kite boarding are available, as are catamaran sailboats. Sailing masts, the masts that support the sails on sailboats, are also typically guyed masts. Multihulls offer tradeoffs as cruising sailboats, compared with monohulls. Wind energy is used by sailboats and land yachts as the primary source of energy. Blind spots exist in a wide range of vehicles&colon; aircraft, cars, motorboats, sailboats, and trucks. It is used in a wide range of sailboats and motorboats. Some tugboats and small sailboats were stranded on Rocuant Island near Talcahuano. The exterior is stainless steel, formed like the sails of sailboats. NACRA is the brand name for a line of small catamaran sailboats, or beachcats. On small sailboats and some cruising sailboats a vang may be omitted. Hans Christian is a brand of heavilybuilt cruising sailboats.