title: Sovereign (yacht)
text: # Sovereign (yacht)
  
  Sovereign (sail number K-12) was the unsuccessful challenger of the 1964 America's Cup for the Royal Thames Yacht Club.
  
  ## Design
  
  Designed by David Boyd and built by Alexander Robertson & Sons, Sovereign was built especially for the 1964 America's Cup challenge. This was the second post-war 12-metre yacht to be designed by David Boyd and built at Alexander Robertson & Sons, the first one being Sceptre.
  
  ## Career
  
  Sovereign was built for J. A. Boyden in 1963. Sovereign lost 4–0 to defender Constellation of the New York Yacht Club.
  
  ## Legacy
  
  Sovereign was the last yacht that represented United Kingdom in general and Royal Thames Yacht Club in particular. Many members at that time thought that for a club that was founded in 1775 and participated in America's Cup since 1870 withdraw from the tournament completely was an embarrassment. The boatyard that built a yacht was sold by the Robertson family, who ruled it since its foundation in 1876, one year after the race, essentially ending wooden boatbuilding there.
  
  