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The VDU patches below will update certified libraries on Edition 25 to 19/22.

* 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.

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General Libraries      

 

*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
(Windows)
Download VDU Patch 
(Unix)
Cancelled or
New Libraries
     N/A NtM
date
GEN22A Kara Sea - Southern Part, Russia N/A   Windows
       314.2 KB
N/A -
GEN22B Svalbard, Norway - Central Zemlya, Russia N/A   Windows
       4.7 KB
N/A -
GEN22C Barents Sea, Russia - Norway N/A   Windows
       279.1 KB
N/A -
GEN22D Gulf of Bothnia to Gulf of Finland N/A   Windows
       436.0 KB
N/A -
GEN22E Baltic Sea N/A   Windows
       216.3 KB
N/A -
GEN22F Novaya Zemlya to Zemlya Frantsa Iosifa, Russia N/A   Windows
       2.2 KB
N/A -
GEN22G Northern Barents Sea, Russia-Norway N/A   Windows
       2.4 KB
N/A -
GEN22H Kara Sea - Northern Part, Russia N/A   Windows
       534.8 KB
N/A -