1550-1579 - worked as a pilot in Enkhuizen. 1577 - published a town plan of Enkuizen. 1579 - became the Receiver of License and Convoy Monies. 1582 - dismissed from the post of Receiver. 1584 - published Spieghel der zeevaerdt. 1592 - published Thresoor der zeevaerdt. 1601 - a pension of a hundred florins granted by the government.