sentences:  Trickett claims the Carronade Island cannons originate from this voyage.Most of the book, however, focuses on the claimed voyage of a fleet of four ships commanded by Cristóvão de Mendonça, along the eastern and southern coasts of Australia then to New Zealand shortly afterwards, and another Portuguese voyage along the west coast.Trickett uses one of the Dieppe maps in the highly decorated "Vallard" atlas of 1547 to demonstrate this.