A boat was ripped apart after sharks attacked a catamaran off the northeastern coast of Australia.<br /><br />Three people were rescued following the terrifying attack.<br /><br />The Australian Maritime Safety Authority (Amsa) said both the hulls of the vessel, located in the Coral Sea near Cairns, were damaged after several shark attacks.<br /><br />Satellite images and a video available on the Amsa website showed a substantial portion of the yacht’s stern being ripped apart.<br /><br />The yacht was located about 835km (519 miles) southeast of Cairns in the Coral Sea when rescue teams responded to the emergency at about 1.30am on Wednesday.