Notorious is not so much a replica of a caravel - it IS a caravel. These were enigmatic ships. Built before use of detailed shipbuilding plans, caravels had a similar hull size but otherwise each ship was unique. Graeme's hand crafted caravel follows this tradition.
The Dutch (Dirk Hartog in 1616) and English (James Cook in 1770) are often credited with the discovery of Australia. Other evidence - such as the Mahogany Ship - suggests that Portuguese explorers were the first Europeans to sail the Australian coast as early as 1521.