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The VDU patches below will update certified libraries on Edition 24 to 38/26.

* 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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*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    N/A NtM
date
COA28A Strait of Belle Isle, Hamilton Inlet, Canada N/A   Windows
       432.2 KB
N/A -
COA28B Northern Coast of Labrador, Canada N/A   Windows
       853.9 KB
N/A -
COA28C Hudson Strait, Hudson Bay, Canada N/A   Windows
       644.4 KB
N/A -
COA28D Arsuk to Graedefjord, Greenland N/A   Windows
       1.0 KB
N/A -
COA28E Umanak Fjord to Innaanganeq, Greenland N/A   Windows
       439.7 KB
N/A -
COA28F Lincoln Sea to Baffin Bay, Canada to Greenland N/A   Windows
       3.8 KB
N/A -
COA28G Borden Island - Ellesmere Island, Canada N/A   Windows
       897.5 KB
N/A -
COA28H Clyde Inlet, Cape Jameson, Baffin Island / Prince of Wales Island to Bylot Island, Canada N/A   Windows
       720.4 KB
N/A -
COA28I Viscount Melville Sound, Canada N/A   Windows
       290.4 KB
N/A -
COA28J Amundsen Gulf, Coronation Gulf, Canada N/A   Windows
       760.0 KB
N/A -
COA28K Cambridge, Shephard and Boothia Bays, Canada N/A   Windows
       831.8 KB
N/A -
COA28L Foxe Basin, Canada N/A   Windows
       310.4 KB
N/A -
COA28M Cumberland Sound, Baffin Island, Canada N/A   Windows
       1.3 MB
N/A -
COA28N Upper Hudson Bay, Canada N/A   Windows
       1.1 KB
N/A -
COA28O Lower Hudson Bay, Canada N/A   Windows
       2.3 KB
N/A -
COA28P Graedefjord to Hamborgerland, Greenland N/A   Windows
       1.1 KB
N/A -
COA28Q Hamborgerland to Rifkol, Greenland N/A   Windows
       903.0 KB
N/A -
GEN28A Labrador, Canada / Lower Hudson Bay, Canada - 96W to 51W N/A   Windows
       273.5 KB
N/A -
GEN28B Baffin Bay, Davis Strait, Greenland / Lincoln Sea, Greenland - 63W to 51W N/A   Windows
       304.3 KB
N/A -
GEN28C Ellesmere Island, Canada - 90W to 63W N/A   Windows
       3.2 KB
N/A -
GEN28D Queen Elizabeth Islands/Arctic Ocean, Canada - 120W to 90W N/A   Windows
       3.1 KB
N/A -
GEN28E Victoria Island, Prince of Wales Island, Canada - 120W to 90W N/A   Windows
       3.6 KB
N/A -
GEN28F Upper Hudson Bay, Baffin Island, Canada - 90W to 63W N/A   Windows
       5.5 KB
N/A -