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The VDU patches below will update certified libraries on Edition 18 to 33/20.

* 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.*

Number Name Download
full library
Download VDU Patch
(Windows)
Download VDU Patch 
(Unix)
Cancelled or
New Libraries
   N/A  N/A NtM
date
A2720410 Port Clarence, Alaska N/A N/A N/A -
A2720460 Point Hope to Kukpowruk Pass, Alaska N/A N/A N/A -
A2720470 Point Lay to Peard Bay, Alaska N/A N/A N/A -
A2720480 Harrison Bay to Skull Cliff Vicinity, US N/A N/A N/A -
A2720483 Brownlow Point to Harrison Bay, Alaska N/A N/A N/A -
A2720486 Camden Bay to Demarcation Bay, Alaska N/A N/A N/A -
A2720490 McKinley Bay and Eskimo Lakes, Canada N/A N/A N/A -
A2720492 Approach to Police Point, Canada N/A N/A N/A -
A2720493 Approach to Paulatuk Harbor, Canada N/A N/A N/A -
COA27A Demarcation Point to M'Clure Strait, Canada N/A N/A N/A -
COA27B Norton Sound to Bering Strait, United States N/A N/A N/A -
COA27C East Siberian Sea, Russia N/A N/A N/A -
COA27D Chukchi Sea, Russia N/A N/A N/A -
COA27E Anadyrskiy Zaliv, Chukchi Sea, Russia N/A N/A N/A -
COA27F Anadyrskiy Zaliv, Russia N/A N/A N/A -
COA27G Demarcation Point to Amundsen Gulf, Canada N/A N/A N/A -
GEN27A East Siberian Sea and Anadyrskiy Zaliv, Russia N/A N/A N/A -
GEN27B Bering Strait, Chukchi Sea, Beaufort Sea N/A N/A N/A -
GEN27C Beaufort Sea, Canadian Arctic Ocean N/A N/A N/A -
H2720400 Nome Harbor, Alaska N/A N/A N/A -
H2720486 Bernard Harbor, Alaska N/A N/A N/A -
H2720490 Trent Bay, Canada N/A N/A N/A -
H2720491 Tuktoyaktuk Harbor, Canada N/A N/A N/A -
H2720492 Police Point, Wise Bay and Summers Harbor, Canada N/A N/A N/A -
H2720494 Pearce Point Harbor, Canada N/A N/A N/A -
H2720495 Tysoe Point, Canada N/A N/A N/A -
H2720496 Sachs Harbor and Jesse Harbor, Canada N/A N/A N/A -