Definitions for "Datum Plane"
Keywords:  plane, depth, tide, elevation, ebt
An artificially established, well surveyed horizontal plane against which elevation, depths, tide, etc. are measured (for example mean sea-level).
A plane of reference for a system of levels which, generally, is taken as zero elevation.
A fixed reference point from which a vertical measurement is taken in recording a specific depth.
Keywords:  chart, see
See chart datum.