A nautical chart (map) shows the shore and land-marks, sea bed conditions, navigation hazards, buoyed channels, and so on, relating to the safe navigation of vessels and inshore boats.
it's called a chart. Nautical maps are referred to as "Charts".
A nautical map, or nautical chart, is a representation of maritime areas designed for the use of marine navigation. It provides detailed information about water depths, hazards, coastlines, navigational aids, and other important features relevant to safe navigation at sea. Nautical maps are essential tools for mariners to plot courses and avoid dangers while navigating through various bodies of water.
nautical
Different kinds of maps are created for different purposes. To navigate from one place to another, one would prefer a physical (geographic) map, but to locate a country, one would need a political map and a world map is for the world. Further refinements include road maps, topographic maps, nautical and aeronautical charts, each of which represent more physical details. Thematic maps can be used to display distribution of various measurements, such as people, oil, cellphone coverage, etc.
A pilot should use a nautical map because it provides essential information about water depths, navigational hazards, and the location of buoys and other aids to navigation, which are crucial for safe navigation over water. Nautical maps also indicate tides, currents, and other environmental factors that can affect flight paths. Using these maps ensures pilots can plan their routes effectively and avoid potential dangers while maintaining situational awareness. Overall, they enhance safety and efficiency during flight operations over maritime areas.
Nautical chart
Such a map is commonly known as a nautical chart.
water depths and navigational routes
Water depth.
Marine Chart or Nautical Chart.
See related link for a star map
according to my map, its about 3 inches
navigation on water.
Use a chart not a map. WGS 84 is probably the best datum
The word nautical miles are frequently used by mariners, seafarers, a measure of distance on a geographic map and standard of measure S.I.
it's called a chart. Nautical maps are referred to as "Charts".
In this context, a minute is 1/60 of a degree.