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The VDU patches below will update certified libraries on Edition 21 to 03/23.

* 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
A1900105 Approaches to Reykjavik and Keflavik, Iceland N/A   Windows
       842.5 KB
N/A -
A1900210 Djupavik, Iceland N/A   Windows
       828.8 KB
N/A -
A1900310 Akureyri, Iceland N/A   Windows
       388.2 KB
N/A -
A1900400 Seydisfjordur, Iceland N/A   Windows
       2.2 KB
N/A -
A1900581 Nunarsuit to Qaarsuarsuk, Greenland N/A   Windows
       1.2 KB
N/A -
A1900600 Ivigtut, Greenland N/A   Windows
       1.3 KB
N/A -
A1900610 Frederikshab Isblink, Greenland N/A   Windows
       1.4 KB
N/A -
A1932690 Approaches to Faroe Islands N/A   Windows
       131.1 KB
N/A -
A1932790 Scotland - West Coast N/A   Windows
       468.0 KB
N/A -
A1932830 Aultbea, Scotland; United Kingdom N/A   Windows
       290.0 KB
N/A -
A1932920 Broadford Bay, Scotland; United Kingdom N/A   Windows
       356.9 KB
N/A -
A1933830 Londonderry, Northern Ireland; United Kingdom N/A   Windows
       226.6 KB
N/A -
A1934150 River Shannon, Ireland N/A   Windows
       947 Bytes
N/A -
A1934260 Bantry Bay, Ireland N/A   Windows
       237.9 KB
N/A -
A1934360 Cork, Ireland N/A   Windows
       76.7 KB
N/A -
A1934480 Dublin, Ireland N/A   Windows
       128.8 KB
N/A -
A1935290 Approaches to Isles of Scilly, England N/A   Windows
       779 Bytes
N/A -
A1936460 Rade De Brest, France N/A   Windows
       25.1 KB
N/A -
COA19A Greenland - Southwest N/A   Windows
       1.2 KB
N/A -
COA19B Greenland - Southeast N/A   Windows
       505.1 KB
N/A -
COA19C Greenland - Northeast N/A   Windows
       2.3 KB
N/A -
COA19D Iceland - North Coast N/A   Windows
       329.1 KB
N/A -
COA19E Northern Ireland; Hebrides N/A   Windows
       429.0 KB
N/A -
COA19F Ireland N/A   Windows
       467.8 KB
N/A -
COA19G Celtic Sea; Saint George's Channel, Ireland N/A   Windows
       141.5 KB
N/A -
COA19H Faroe Islands (Denmark) N/A   Windows
       76.3 KB
N/A -
COA19I Jan Mayen (Norway) N/A   Windows
       468 Bytes
N/A -
COA19J Iceland - South Coast N/A   Windows
       240.7 KB
N/A -
GEN19A United Kingdom; Ireland N/A   Windows
       359.4 KB
N/A -
GEN19B Greenland; Iceland N/A   Windows
       488.1 KB
N/A -
H1900070 Keflavik, Iceland N/A   Windows
       241.8 KB
N/A -
H1900080 Hafnarfjordur, Iceland N/A   Windows
       65.2 KB
N/A -
H1900100 Reykjavik, Iceland N/A   Windows
       149.9 KB
N/A -
H1900105 Hvalfjordur, Iceland N/A   Windows
       267.0 KB
N/A -
H1900110 Akranes, Iceland N/A   Windows
       433 Bytes
N/A -
H1900250 Saudarkrokur, Iceland N/A   Windows
       540 Bytes
N/A -
H1900260 Siglufjordur, Iceland N/A   Windows
       87.2 KB
N/A -
H1900310 Akureyri, Iceland N/A   Windows
       80.8 KB
N/A -
H1900320 Husavik, Iceland N/A   Windows
       452 Bytes
N/A -
H1900400 Seydisfjordur, Iceland N/A   Windows
       606 Bytes
N/A -
H1900420 Neskaupstadur (Nordfjordur), Iceland N/A   Windows
       99.1 KB
N/A -
H1900430 Eskifjordur, Iceland N/A   Windows
       82.3 KB
N/A -
H1900440 Budareyri, Iceland N/A   Windows
       112.4 KB
N/A -
H1900580 Qaqortoq, Greenland N/A   Windows
       414 Bytes
N/A -
H1900600 Arsuk Fjord, Greenland N/A   Windows
       1.6 KB
N/A -
H1900620 Ravns Storo, Greenland N/A   Windows
       750 Bytes
N/A -
H1932680 Tvoroyri, Faroe Islands, Denmark N/A   Windows
       573 Bytes
N/A -
H1932690 Torshavn, Faroe Islands, Denmark N/A   Windows
       74.7 KB
N/A -
H1932702 Runavik, Faroe Islands, Denmark N/A   Windows
       573 Bytes
N/A -
H1932710 Kollafjordur, Faroe Islands, Denmark N/A   Windows
       452 Bytes
N/A -
H1933285 Sound of Islay, England, United Kingdom N/A   Windows
       471 Bytes
N/A -
H1933770 Belfast, Northern Ireland; United Kingdom N/A   Windows
       357 Bytes
N/A -
H1933820 Coleraine, Northern Ireland; United Kingdom N/A   Windows
       639 Bytes
N/A -
H1933830 Londonderry, Northern Ireland; United Kingdom N/A   Windows
       355.8 KB
N/A -
H1934130 River Shannon, Ireland N/A   Windows
       178.7 KB
N/A -
H1934240 Castletown Bearhaven, Ireland N/A   Windows
       65.7 KB
N/A -
H1934260 Bantry Bay, Ireland N/A   Windows
       471 Bytes
N/A -
H1934360 Cork, Ireland N/A   Windows
       198.5 KB
N/A -
H1934470 Dun Laoghaire, Ireland N/A   Windows
       65.6 KB
N/A -
H1934480 Dublin, Ireland N/A   Windows
       88.1 KB
N/A -
H1934490 Howth, Ireland N/A   Windows
       40.4 KB
N/A -