Mirrabooka VI is a S&S Defiance class 30-footer chartered by the RAAF of Williamstown. Mirrabooka will compete against the Navy for the Oggin Cup. The yacht will sport 300 mm RAAF Rondels on the bow, and the official entry warned all yachts in front of her to beware F-18 bombing attacks (subject to Government finance). Mirrabooka VI might beat Navy, but as one of the smallest yachts in the fleet and with an inexperienced Hobart crew, a high overall place is difficult to foresee.