Lulworth (1920) was built by the White Brothers' Yard for Richard H. Lee, who wanted a racing boat to compete in the premier yachting league in Europe: the British "Big Class". Shortages in the supply of premium spruce after World War I meant that Lulworth's original lower-mast was made of steel instead of wood. This constraint handicapped Lulworth greatly, leaving her trailing older, more famous Big Class racers like Thomas Benjamin Frederick Davis's Herreshoff-designed schooner Westward (1910), HMY Britannia I (1893) and Sir Thomas J. Lipton's Fife-designed 23mR Shamrock (1908). Her sail plan was updated several times to no avail, until America's Cup naval architect Charles Ernest Nicholson redesigned the rig with a wooden lower- mast and adjusted the keel balance. By 1924, Lulworth's flaws were corrected and she became an accomplished racer in all subsequent seasons of the Big Class: from 1920 to 1930, she took part in 258 regattas, taking 59 first places, 47 of which were after 1924.