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The VDU patches below will update certified libraries on Edition 31 to 15/24.

* 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.

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Aleutian       Eastern Gulf of Alaska       Western Gulf of Alaska      

 

*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
A2519520 Cross Sound to Lynn Canal, Alaska   Edition 31
       3.1 MB
  Windows
       2.3 KB
N/A -
A2519630 Controller Bay; Katalla, Alaska   Edition 31
       726.2 KB
  Windows
       1.3 KB
N/A -
A2519670 Eastern Prince William Sound; Valdez, Alaska   Edition 31
       3.6 MB
  Windows
       1.1 MB
N/A -
A2519740 Western Prince William Sound; San Juan Cannery, Alaska   Edition 31
       5.2 MB
  Windows
       2.0 KB
N/A -
A2519760 Blying Sound; Seward, Alaska   Edition 31
       2.4 MB
  Windows
       2.4 KB
N/A -
A2519781 Homer, Alaska   Edition 31
       2.6 MB
  Windows
       2.2 KB
N/A -
A2519788 Ninilchik, Alaska   Edition 31
       2.8 MB
  Windows
       3.3 KB
N/A -
A2519800 Anchorage, Alaska   Edition 31
       2.0 MB
  Windows
       3.1 KB
N/A -
A2519820 Marmot/Chiniak Bays; Kodiak, Alaska   Edition 31
       2.9 MB
  Windows
       2.2 KB
N/A -
A2519995 Cape Douglas to Cape Unalishagvak, Alaska   Edition 31
       2.4 MB
  Windows
       2.2 KB
N/A -
A2520090 Cold Bay; Pavlof Islands; Sanak, Alaska   Edition 31
       5.1 MB
  Windows
       1,007.1 KB
N/A -
A2520120 Krenitzin Islands; Dutch Harbor, Alaska   Edition 31
       2.0 MB
  Windows
       1.5 KB
N/A -
A2520160 Kiska Island to Amchitka Island, Alaska   Edition 31
       2.6 MB
  Windows
       2.2 KB
N/A -
A2520321 Cape Etolin, Nunivak Island, Alaska   Edition 31
       221.7 KB
  Windows
       739 Bytes
N/A -