GIS & Other Products  
  Products for GIS  
     •   NOAA ENC® Direct to GIS  
     •   Raster Navigational Charts: NOAA RNC®  
     •   U.S. Maritime Zones/Boundaries  
     •   Law of the Sea  
     •   nowCOAST  
  Historical Products  
     •   Historical Maps and Charts  
  GIS Services and Tools 
     •   VDatum Transformation Tool  
     •   Web Mapping and Feature Services  
     •   ENC Handler for ArcMap  
     •   North Amer. Horiz. Datum Conversion Utility  
     •   Seamless Raster Chart Server & Web Map Services  
  Learn About  
     •   Law of the Sea  
     •   Differences Between ENC and ENC Direct to GIS  
     •   Maritime Limits White Paper  
     •   Datums and Transformations  
     •   Geospatial Applications of Hydrodynamic Models  
  Data Portals 
     •   nowCOAST: Real-Time Coastal Data Map Portal  
     •   NOS Data Explorer  
     •   NOAA's National Geophysical Data Center  
     •   NOAA's Coastal Services Center  
     •   Technical Reports & Publications  

Enhancements added to ENC Direct to GIS 10.1

In September 2012 the Office of Coast Survey launched an experimental version of ENC Direct to GIS, which used an ESRI ArcGIS 10.0 server. We asked users to provide feedback on the symbology, accessibility, and attribution to charting data. That original version had been using the ESRI ArcIMS Server since inception in 2007.

Users suggested more than 50 improvements. Many of these recommendations are integrated into the current portal, which has been upgraded to ESRI ArcGIS 10.1 server technology.

Please note: the web portal has a new URL. Update bookmarks to encdirect.noaa.gov.

New ENC Scale Bands

The original web portal had four scale bands, where the approach and harbor scale bands were combined. This caused confusion as many of the features were duplicated. The new site has six scale bands that are displayed separately, depending on the resolution defined in the viewer.

Figure 1
Figure 1: Display of both Overview and Approach Scale Bands off the Louisiana Coast

Updated Frequently Ask Questions (FAQs) and How-To Pages

Based on customer input, we added new questions to the FAQ, specifically addressing the new look and feel of the viewer. The "how-to" procedures are updated to reflect improved map search function, extraction tools, and legend.

Point and Click Identify Object Function

The new "identify feature" function is a point and click away. In just a few seconds a box will appear that provides additional information about the feature being displayed. If more than one feature is available you can scroll through the identify box to gather information on each feature.

Figure 2
Figure 2: Identified Depth Contour of 9.1 meters in the approach to Baltimore Harbor

List of Additional Services

Navigational charting data is available for other GIS applications through different services. Examples include ESRI ArcMap using Rest URL map services, or Google Earth using the KML services available on the ENC Direct to GIS website.

Figure 3
Figure 3: Navigational Chart Information displayed in ArcMap

Coast Survey is continually improving access to navigational charting information through services like ENC Direct to GIS. Please let us know if you have any suggestions or comments on viewer improvements or other services through the online inquiry system.

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