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The boats can typically travel at speeds over 80 knots (150 km/h) in calm waters, over 50 knots (90 km/h) in choppy waters, and maintain 25 knots (47 km/h) in the average five to seven foot (1.5 to 2 m) Caribbean seas. They are heavy enough to cut through higher waves, although at a slower pace.
Nevertheless her average speed was around 10.5 knots. These are the record speeds set by the fastest sailing ships. It is probably fair to say that most sailing ships in the 19th and early 20th centuries averaged between 5 â 8 knots on average depending on the size of the ship, the route and the weather. There are nothing wrong with these speeds but they are not comparable with container ships, even those slow steaming at 12 knots.