2013 Australian Formula 18 catamaran championships

From the following Sail-World Article

http://www.sail-world.com/Australia/F18-top-guns-ready-for-take-off-in-national-championships/105904

A squadron of F18s will do battle on Lake Macquarie, near Newcastle, over the Australia Day long weekend, as the top guns of catamaran sailing contest the 2013 Australian Formula 18 National Championships.

With revolutionary wave-piercing hulls, twin trapezes, a high aspect square-top mainsail, asymmetric spinnaker, plus carbon-fibre centreboards and rudders, the flying F18s can reach speeds of over 25 knots (46 km/h), making them one of the world’s fastest racing classes.

There’s close tacking and gybing duels aplenty as the windward/leeward courses are relatively tight and each race takes approximately 45 minutes for the first boat to finish.

read more here

'The F18s are one of the fastest sailboat racing classes on the water' photo Mark Rothfield