#clipperroundtheworldrace – London waved off the crews of the world's longest ocean race as they started their 40,000 mile adventure from Tower Bridge.
Crowds estimated in excess of 120,000 lined the banks of the Thames to cheer on the colourful pageant to mark the start of the Clipper 2013-14 Round the World Yacht Race.
The fleet of twelve 70-ft ocean racing yachts and a flotilla of support vessels, spectator boats and well-wishers participated in a spectacular parade with Tower Bridge lifting to salute the crews who will face the ultimate endurance test.
The armada was joined by a paddleship steamer, pilot boats, police boats, RIBs, spectator boats and other pleasure craft as Britain waved off the 270 crew sailing from London to Rio de Janeiro on Leg 1.
It is the first time London has hosted the Clipper Race and is 40 years since the Thames last featured a round the world sailing event.
The fleet will not be returning until July 2014 after a total of 670 crew race 40,000 miles and visit 16 ports on six continents.
The first leg of the Clipper Race ends in Marina da Gloria, Rio de Janeiro, the destination for the 2016 Olympic sailing events. They then continue on via South Africa, Western Australia, Sydney (including the world famous Sydney-Hobart Race), Brisbane, Singapore, China, San Francisco, Panama, Jamaica, New York, Derry Londonderry and the Netherlands before returning to London's St Katharine Docks for Race Finish in July 2014.