How To Use Contour Lines To Navigate Safely
Here’s some great advice from Skipper Tips about how to use contour lines on land to help you navigate, either when coastal cruising or when making a landfall: Think of land elevation contours like those found in water–depth contours. Cartographers will sometimes indicate the height of a contour prominent enough to be sighted by a mariner. Heights will be shown as a number, so always check the chart datum to understand the height value. It could be in feet or meters. Make this your first step so that you know at-a-glance what the height values indicate. 1. Why Stagger Contour…