Input (grade 6): The Kaz II, dubbed "the ghost yacht", is a 9.8-meter catamaran which was found drifting 88 nautical miles (160 km) off of the northern coast of Australia on April 18, 2007.
Output (grade 10): The Kaz II is a 12 metre catamaran that was found drifting 160 km (80 nautical miles) off the northern coast of Australia on April 18, 2007.