Leopard of London is one of the biggest racing yachts built in the United Kingdom since Sir Thomas Sopwith's J-Class America's Cup challenger Endeavour was launched in 1934. The stats are impressive, to say the least, and she is easily compared with the last of the IOR maxis, such as Bruce Farr's world championship winner Longobarda, which Slade also owned. The carbon-fiber Leopard of London has the same displacement despite being 10 feet longer, and she carries 40 percent more sail area. Structural engineering by SP Technologies turned out a hull that weighs just more than 2 tons, and a 90-by-21-foot, 6-inch deck that's light enough to be lifted out of the shed by eight workers. She spreads more than 4,000 square feet of 3DL sail on a carbon-fiber fractional rig built by Hall Spars, and her asymmetrical masthead spinnaker-should she be allowed to set it-seems big enough to smother all rivals at Antigua Sailing Week.