Watkin Tench served as a Marine officer on one of the vessels of the First Fleet and recorded his observations of the voyage in A Narrative of the Expedition to Botany Bay . Tench also wrote of the subsequent settlement in New South Wales in A Complete Account of the Settlement at Port Jackson . These accounts are among the most important documents of early settlement in Australia, giving an insight into the early colonial settlement, as told through the keen eyes of a curious young man.