water depths and navigational routes
It shows depths of water and navigation routes, including islands and coastlines.
Such a map is commonly known as a nautical chart.
a physical map
when a pilot use a nautical map they can see what place they are going to.
The Mercator projection is the standard for nautical navigation.
Marine Chart or Nautical Chart.
It shows depths of water and navigation routes, including islands and coastlines.
Nautical chart
Such a map is commonly known as a nautical chart.
a physical map
when a pilot use a nautical map they can see what place they are going to.
navigation on water.
according to my map, its about 3 inches
See related link for a star map
Water depth.
Use a chart not a map. WGS 84 is probably the best datum
it's called a chart. Nautical maps are referred to as "Charts".