Clipper Race yachts depart London
1 September 2013 Last updated at 17:46 BST
Thousands of spectators lined the banks of the Thames to see off the yachts taking part in the Clipper Round the World Yacht Race.
It is the first time the capital has hosted the event.
BBC London's Gareth Furby spoke to crew member Nikki Banks, chef Lawrence Linguard and round the world yachtswoman Dame Ellen MacArthur.