The million-dollar catamaran being trialled by America's Cup teams in Auckland has flipped during training on the Waitemata Harbour.
No one was hurt during the accident and the AC45 class catamaran is being towed back into port.
The boat was being trialled by crew from the Swedish team Artemis.
It is the first of a fleet of ten to be built near Auckland, and used for a World Series starting later this year in the run-up to the 2013 America's Cup.
