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The VDU patches below will update certified libraries on Edition 23 to 18/23.

* 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
A2800640 Approach to Nuuk, Greenland N/A   Windows
       843.3 KB
N/A -
A2800660 Holsteinsborg-Faeringe Nordhavn, Greenland N/A   Windows
       628.6 KB
N/A -
A2800670 Egedesminde-Godhavn, Greenland N/A   Windows
       168.3 KB
N/A -
A2801000 Uummannaq (Dundas), Thule, Greenland N/A   Windows
       110.2 KB
N/A -
A2801010 Frobisher Bay, Baffin Island, Canada N/A   Windows
       2.2 KB
N/A -
A2801065 Igloolik Island, Canada N/A   Windows
       388 Bytes
N/A -
A2801220 Gray and Mclelan Straits, Labrador, Canada N/A   Windows
       2.2 MB
N/A -
A2801230 Osborne Point, Labrador, Canada N/A   Windows
       1.1 KB
N/A -
A2801238 Saglek Bay, Labrador, Canada N/A   Windows
       1,009 Bytes
N/A -
A2801260 Seniartlit Islands, Labrador, Canada N/A   Windows
       4.9 MB
N/A -
A2801290 Hopedale Run, Labrador, Canada N/A   Windows
       844.7 KB
N/A -
A2801300 Cape Harrison, Labrador, Canada N/A   Windows
       1.7 MB
N/A -
A2801340 Terrington Basin, Labrador, Canada N/A   Windows
       563.5 KB
N/A -
A2801420 Saint Anthony, Newfoundland, Canada N/A   Windows
       739 Bytes
N/A -
A2820510 Cambridge Bay, Victoria Island, Canada N/A   Windows
       201.8 KB
N/A -
A2820515 Korvigdjuak Island Channels, Canada N/A   Windows
       434 Bytes
N/A -
A2820520 Resolute Passage, Canada N/A   Windows
       911 Bytes
N/A -
A2820525 Erebus Bay & Radstock Bay, Canada N/A   Windows
       836 Bytes
N/A -
COA28A Strait of Belle Isle, Hamilton Inlet, Canada N/A   Windows
       342.1 KB
N/A -
COA28B Northern Coast of Labrador, Canada N/A   Windows
       674.4 KB
N/A -
COA28C Hudson Strait, Hudson Bay, Canada N/A   Windows
       2.4 KB
N/A -
COA28D Arsuk to Graedefjord, Greenland N/A   Windows
       193.8 KB
N/A -
COA28E Umanak Fjord to Innaanganeq, Greenland N/A   Windows
       408.7 KB
N/A -
COA28F Lincoln Sea to Baffin Bay, Canada to Greenland N/A   Windows
       3.1 KB
N/A -
COA28G Borden Island - Ellesmere Island, Canada N/A   Windows
       4.6 KB
N/A -
COA28H Clyde Inlet, Cape Jameson, Baffin Island / Prince of Wales Island to Bylot Island, Canada N/A   Windows
       3.9 KB
N/A -
COA28I Viscount Melville Sound, Canada N/A   Windows
       2.5 KB
N/A -
COA28J Amundsen Gulf, Coronation Gulf, Canada N/A   Windows
       1.5 KB
N/A -
COA28K Cambridge, Shephard and Boothia Bays, Canada N/A   Windows
       837.2 KB
N/A -
COA28L Foxe Basin, Canada N/A   Windows
       2.3 KB
N/A -
COA28M Cumberland Sound, Baffin Island, Canada N/A   Windows
       1.6 KB
N/A -
COA28N Upper Hudson Bay, Canada N/A   Windows
       875.0 KB
N/A -
COA28O Lower Hudson Bay, Canada N/A   Windows
       1.8 KB
N/A -
COA28P Graedefjord to Hamborgerland, Greenland N/A   Windows
       924.3 KB
N/A -
COA28Q Hamborgerland to Rifkol, Greenland N/A   Windows
       911 Bytes
N/A -
GEN28A Labrador, Canada / Lower Hudson Bay, Canada - 96W to 51W N/A   Windows
       253.2 KB
N/A -
GEN28B Baffin Bay, Davis Strait, Greenland / Lincoln Sea, Greenland - 63W to 51W N/A   Windows
       177.0 KB
N/A -
GEN28C Ellesmere Island, Canada - 90W to 63W N/A   Windows
       2.5 KB
N/A -
GEN28D Queen Elizabeth Islands/Arctic Ocean, Canada - 120W to 90W N/A   Windows
       2.4 KB
N/A -
GEN28E Victoria Island, Prince of Wales Island, Canada - 120W to 90W N/A   Windows
       2.8 KB
N/A -
GEN28F Upper Hudson Bay, Baffin Island, Canada - 90W to 63W N/A   Windows
       4.6 KB
N/A -
H2800640 Aqissersiorfik-Nuuk, Greenland N/A   Windows
       75.8 KB
N/A -
H2800660 Holsteinsborg, Greenland N/A   Windows
       407 Bytes
N/A -
H2800670 Egedesminde, Greenland N/A   Windows
       1.4 KB
N/A -
H2801000 North Star Bugt Anchorage, Greenland N/A   Windows
       1.2 KB
N/A -
H2801001 Grise Fjord, Canada N/A   Windows
       500 Bytes
N/A -
H2801010 Frobisher Bay, Baffin Island, Canada N/A   Windows
       724 Bytes
N/A -
H2801015 Frobisher Bay (Northwest), Canada N/A   Windows
       879 Bytes
N/A -
H2801090 Churchill Harbor, Hudson Bay, Canada N/A   Windows
       618 Bytes
N/A -
H2801220 Port Burwell, Labrador, Canada N/A   Windows
       77.0 KB
N/A -
H2801221 Bowdoin Harbour, Labrador, Canada N/A   Windows
       388 Bytes
N/A -
H2801222 Mclelan Strait East, Labrador, Canada N/A   Windows
       467 Bytes
N/A -
H2801223 Williams Harbour, Labrador, Canada N/A   Windows
       663 Bytes
N/A -
H2801238 Landings Beach, Labrador, Canada N/A   Windows
       369 Bytes
N/A -
H2801240 Hebron Harbor, Labrador, Canada N/A   Windows
       350 Bytes
N/A -
H2801241 Winnie Bay, Labrador, Canada N/A   Windows
       331 Bytes
N/A -
H2801242 Moss Harbor, Labrador, Canada N/A   Windows
       541 Bytes
N/A -
H2801290 Hopedale Harbour, Labrador, Canada N/A   Windows
       426 Bytes
N/A -
H2801340 Terrington Basin and Goose Bay, Labrador. Canada N/A   Windows
       407 Bytes
N/A -
H2801420 Saint Anthony Harbor, Newfoundland, Canada N/A   Windows
       64.0 KB
N/A -
H2820498 Bernard Harbor, Canada N/A   Windows
       533 Bytes
N/A -
H2820499 Lady Franklin Point, Canada N/A   Windows
       467 Bytes
N/A -
H2820500 Kugluktuk, Canada N/A   Windows
       692 Bytes
N/A -
H2820510 Cambridge Bay, Victoria Island, Canada N/A   Windows
       407 Bytes
N/A -
H2820515 Saint Peter Bay, Canada N/A   Windows
       724 Bytes
N/A -
H2820520 Resolute Bay, Canada N/A   Windows
       426 Bytes
N/A -