Primary specification

  • Attributed bathymetric contour intervals:
    • 10 m at depths from 0 m to 200 m
    • 20 m at depths > 200 m to 400 m
    • 100 m at depths > 400 m
  • The vertical datum is nominally based on Chart Datum/Mean Sea Level.
  • The horizontal co-ordinate system is based on WGS84 lat/long decimal degrees.
  • The coastline is based on World Vector Shoreline ©NIMA and is attributed with a value of 0 m.
  • DigBath250 is strictly for non-navigational use.