Chart Datum For Charted Depths Finest Magnificent
chart datum for charted depths. Each datum is associated with a particular reference. A chart of a given region will show depths two feet greater than another chart of thd same region if the datum used in the former is two feet higher.
chart datum for charted depths Chart datum is marked on the diagram below as a purple dotted line and as you can see it is used both: “a horizontal datum is a reference system for specifying positions on the earth’s surface. Chart datum is the plane below which all depths are published on a navigational chart.