The Big Five consisted of Britannia, Terpsichore(now Lulworth), Shamrock, White Heather II and the schooner Westward (a replica exists named Eleonora).
White Heather II was a 23-Metre designed and built in 1907 by William Fife III for Myles Burton Kennedy. Subsequently she was converted to the J-Class.
Shamrock was a 23-Metre designed by William Fife in 1908 and built for Sir Thomas Lipton with the intention of challenging in the America’s Cup. However, halfway through her build the challenge was refused but Lipton decided to continue with her construction anyway.