ENC layers

ENC layers are used to visualize and interact with electronic navigational charts (ENCs). ArcGIS Pro supports ENCs that conform to the International Hydrographic Organization (IHO) S-57 standard.

You can use ENC layers to do the following:

  • View S-57 data in compliance with S-52 standards and specifications for chart content display.
  • Use S-57 data as an additional data source for situational awareness and decision-making.
  • Combine S-57 datasets with other sources to inform geospatial analysis.

ENC layers are created from S-57 cells (.000 files) which represent navigational chart data at a particular scale. The data in a single cell corresponds to a single navigational use, such as: overview, general, or coastal (a navigational use corresponds to a scale range suitable for a particular use).

ENC layers are symbolized with S-52 symbology accessible from the Symbology pane. It's important to set all symbology options to the same settings when viewing a series of cells in a single map so that the chart view is consistent.

ENC layers support pop-ups that show attribute information for the identified objects. Attributes differ across object types in the ENC layer.