"""
Measured positive down in meters. c.f. altitude_coordinate_type in
OARIS Common_Types package.
"""
type depthCoordinateType {
  value: double!
}

"""
Used by waterborne craft to report depth information.
"""
type depthReportType {
  "The depth of the bed below the keel."
  depthBelowKeel: depthCoordinateType
  "The depth of the keel below the surface of the water."
  keelDepth: depthCoordinateType
  "The depth of the bed below the water's surface."
  waterDepth: depthCoordinateType
}