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Coastal Libraries return to region


The VDU patches below will update certified libraries on Edition 20 to 12/24.

* To download individual libraries or patches, right-click on the link and choose 'Save Target As' (for IE) or 'Save Link As' (for Netscape). To download multiple files at once, use the checkboxes to select the files, and click the 'Download' button at the bottom of the list. Once the files have been downloaded, the user must use Winzip 9.0 or earlier editions to extract from the .zip files.



*Rows highlighted below in this color are cancelled libraries since the latest New Edition.*
*Rows highlighted below in this color are new libraries available with the latest New Edition.*

IMPORTANT: As of 15 November 2021, NGA's Maritime Safety Office no longer supports DNC VDU UNIX patches. If you have questions or concerns please contact NGA via the Maritime Quality Feedback System (MQFS)

Number Name Download
full library
Download VDU Patch
Download VDU Patch 
Cancelled or
New Libraries
     N/A NtM
COA27A Cape Kellett to Discovery Point, Canada N/A   Windows
       1.3 KB
N/A -
COA27B Norton Sound to Bering Strait, United States   Edition 20
       1.6 MB
       371.2 KB
N/A -
COA27C East Siberian Sea, Russia N/A   Windows
       514.8 KB
N/A -
COA27D Chukchi Sea, Russia N/A   Windows
       506.7 KB
N/A -
COA27E Anadyrskiy Zaliv, Chukchi Sea, Russia N/A   Windows
       682.5 KB
N/A -
COA27F Anadyrskiy Zaliv, Russia N/A   Windows
       176.0 KB
N/A -
COA27G Demarcation Point to Amundsen Gulf, Canada N/A   Windows
       1,006.2 KB
N/A -