Coastal
Harbors, headlands, and the line where land gives up.
The map
Coasts are where the land stops pretending it's solid. Harbors, headlands, and tide lines that shift with the moon.
How to draw it
scale 1:50 000 water bathymetric blues coast mean high water line features buoys, jetties, light houses legend depth in meters
What to include
The cove you swam in. The pier where the boats come in. The sandbar that appears at low tide and vanishes at high.