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The VDU patches below will update certified libraries on Edition 31 to 47/25.

* 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
H2519410 Sitka, Baranof Island, Alaska   Edition 31
       4.8 MB
  Windows
       1.8 MB
N/A -
H2519415 Neva Strait; Neva Point to Zeal Point, Alaska   Edition 31
       2.3 MB
  Windows
       753.3 KB
N/A -
H2519420 Sergius Narrows, Alaska   Edition 31
       3.6 MB
  Windows
       1.0 MB
N/A -
H2519450 Elfin Cove; Chichagof Island, Alaska   Edition 31
       142.5 KB
  Windows
       33.7 KB
N/A -
H2519451 Inian Cove, Inian Island, Alaska   Edition 31
       83.3 KB
  Windows
       29.7 KB
N/A -
H2519588 Haines, Alaska   Edition 31
       157.5 KB
  Windows
       75.7 KB
N/A -
H2519589 Tanani Point, Alaska   Edition 31
       127.6 KB
  Windows
       45.6 KB
N/A -
H2519590 Skagway, Alaska   Edition 31
       207.2 KB
  Windows
       99.0 KB
N/A -
H2519640 Cordova, Alaska   Edition 31
       443.8 KB
  Windows
       231.2 KB
N/A -
H2519670 Valdez & Valdez Marine Terminal, Alaska   Edition 31
       1.5 MB
  Windows
       438.9 KB
N/A -
H2519680 Whittier, Alaska   Edition 31
       591.2 KB
  Windows
       190.5 KB
N/A -
H2519700 Drier Bay, Knight Island, Alaska   Edition 31
       1.3 MB
  Windows
       721.1 KB
N/A -
H2519760 Seward, Alaska   Edition 31
       195.6 KB
  Windows
       70.7 KB
N/A -
H2519781 Homer, Alaska   Edition 31
       211.7 KB
  Windows
       61.7 KB
N/A -
H2519788 Ninilchik, Alaska   Edition 31
       88.3 KB
  Windows
       403 Bytes
N/A -
H2519790 Kenai, Alaska   Edition 31
       372.3 KB
  Windows
       134.7 KB
N/A -
H2519795 Nikiski, Alaska   Edition 31
       182.1 KB
  Windows
       87.3 KB
N/A -
H2519800 Anchorage, Alaska   Edition 31
       1.3 MB
  Windows
       302.6 KB
N/A -
H2519803 North Foreland, Alaska   Edition 31
       99.6 KB
  Windows
       51.4 KB
N/A -
H2519805 Drift River, Alaska   Edition 31
       150.7 KB
  Windows
       63.9 KB
N/A -
H2519808 Iliamna Bay, Alaska   Edition 31
       215.7 KB
  Windows
       112.5 KB
N/A -
H2519809 Whale Passage, Alaska   Edition 31
       144.5 KB
  Windows
       44.5 KB
N/A -
H2519810 Ouzinkie, Spruce Island, Alaska   Edition 31
       225.0 KB
  Windows
       84.4 KB
N/A -
H2519820 Kodiak, Kodiak Island, Alaska   Edition 31
       2.1 MB
  Windows
       1.5 MB
N/A -
H2519995 Alinchak Bay, Alaska   Edition 31
       181.4 KB
  Windows
       99.4 KB
N/A -
H2520120 Dutch Harbor, Unalaska Island, Alaska   Edition 31
       2.1 MB
  Windows
       1.0 MB
N/A -
H2520140 Adak Naval Air Station, Adak Island, Alaska   Edition 31
       1.8 MB
  Windows
       558.8 KB
N/A -
H2520150 Constantine, Amchitka Island, Alaska   Edition 31
       392.0 KB
  Windows
       183.7 KB
N/A -
H2520160 Kiska Island; Little Kiska Island, Alaska   Edition 31
       963.8 KB
  Windows
       735.6 KB
N/A -