Shamrock (yacht)
Shamrock  and Columbia in 1899  | |
| Yacht club | Royal Ulster Yacht Club | 
|---|---|
| Nation | United Kingdom | 
| Designer(s) | William Fife III | 
| Builder | J. Thorneycroft & Co. | 
| Launched | 26 June 1899 | 
| Owner(s) | Sir Thomas Lipton | 
| Racing career | |
| Skippers | Captain Archibald "Archie" Hogarth | 
| America's Cup | 1899 | 
| Specifications | |
| Displacement | 156.9 metric tonnes | 
| Length | 
  | 
| Beam | 7.46 m (24.5 ft) | 
| Draft | 6.15 m (20.2 ft) | 
| Sail area | 1,214.30 m2 (13,070.6 sq ft) | 
Shamrock was a racing yacht built in 1898 that was the unsuccessful Irish challenger for the 1899 America's Cup against the United States defender, Columbia.