The boom years of the clipper ship era began in 1843 as a result of a growing demand for a more rapid delivery of tea from China. It continued under the stimulating influence of the discovery of gold in California and Australia in 1848 and 1851, and ended with the opening of the Suez Canal in 1869.
To sailors, three things made a ship a clipper. She must be sharp-lined, built for speed. She must be tall-sparred and carry the utmost spread of canvas. And she must use that sail, day and night, fair weather and foul.
Among the most notable clippers were the China clippers, also called Tea clippers or Opium clippers, designed to ply the trade routes between Europe and the East Indies. The last example of these still in reasonable condition was Cutty Sark, preserved in dry dock at Greenwich, United Kingdom. Damaged by fire on 21 May 2007 while undergoing conservation, the ship was permanently elevated three meters above the dry dock floor in 2010 as part of a plan for long-term preservation.
There are many ways of judging the speed of a ship: by knots, by day's runs, by port-to-port records. Judged by any test, the American clippers were supreme.
Donald McKay's Sovereign of the Seas reported the highest speed ever achieved by a sailing ship – 22 knots (41 km/h), made while running her easting down to Australia in 1854. (John Griffiths' first clipper, the Rainbow, had a top speed of 14 knots...) There are eleven other instances of a ship's logging 18 knots (33 km/h) or over. Ten of these were recorded by American clippers... Besides the breath-taking 465-nautical-mile (861 km) day's run of the Champion of the Seas, there are thirteen other cases of a ship's sailing over 400 nautical miles (740 km) in 24 hours...
And with few exceptions all the port-to-port sailing records are held by the American clippers.
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