Lead Line, Chip Log, Walker Log, Compass, and Speaking Tubes
This diagram shows important tools of the navigator for dead reckoning and piloting, including the lead line, chip log, a mechanical log, and a compass. For communications, speaking tubes are shown on the left. This illustration is from H. Paasch's Illustrated Marine Encyclopedia, 1890, Plate 98. For a 17th century navigator only the mechanical log would have been new.