Walking6 min read
Reading a walking map where the contour lines tighten
Crowded contour lines reveal a steep hillside, but a walker's route depends on the contour interval, map scale and the path's direction through the slope.
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Hydrography6 min read
Reading a seabed through sound
A sonar return is a measurement, not a picture of the ocean floor. Turning it into a useful chart means accounting for the water, the moving vessel, and what the echo cannot identify on its own.
Navigation3 min read
I found the service page after three clicks and one small tantrum
A navigation menu can make perfect sense to the people who built it while sending everyone else on a tiny, unnecessary expedition.