DNC® Home     Maritime     Contact DNC®     FAQ                        
Approach Libraries return to region


The VDU patches below will update certified libraries on Edition 20 to 07/23.

* 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.

England, Northern Ireland, And Scotland       England, Wales, And Northern France      


*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
Download VDU Patch 
Cancelled or
New Libraries
 N/A    N/A NtM
A2031470 Thames River, England N/A   Windows
       223.6 KB
N/A -
A2031530 Harwich, England N/A   Windows
       189.5 KB
N/A -
A2031660 Hull, England N/A   Windows
       194.3 KB
N/A -
A2031765 Tyne, England N/A   Windows
       116.8 KB
N/A -
A2031980 Firth of Forth, Scotland N/A   Windows
       175.5 KB
N/A -
A2032170 Approaches to Dundee, Scotland N/A   Windows
       131.6 KB
N/A -
A2032220 Aberdeen, Scotland N/A   Windows
       85.4 KB
N/A -
A2032350 Invergordon, Scotland N/A   Windows
       134.5 KB
N/A -
A2032600 Lerwick, Shetland Islands, Scotland N/A   Windows
       331.2 KB
N/A -
A2032790 Scotland; Southwest Coast N/A   Windows
       1.4 KB
N/A -
A2032830 Aultbea, Scotland N/A   Windows
       266.0 KB
N/A -
A2032920 Broadford Bay, Scotland N/A   Windows
       196.1 KB
N/A -
A2033090 Mallaig, Scotland N/A   Windows
       169.9 KB
N/A -
A2033490 Approach to Glasgow, Scotland N/A   Windows
       1.3 MB
N/A -
A2033770 Approach to Belfast, Northern Ireland N/A   Windows
       171.9 KB
N/A -
A2034480 Dublin, Ireland N/A   Windows
       39.8 KB
N/A -
A2034600 Approach to Maryport and Silloch, United Kingdom N/A   Windows
       975 Bytes
N/A -
A2034690 Liverpool, England N/A   Windows
       137.8 KB
N/A -
A2034850 Fishgard, Wales N/A   Windows
       85.2 KB
N/A -
A2034880 Milford Haven, Wales N/A   Windows
       97.9 KB
N/A -
A2035070 Bristol Channel, England N/A   Windows
       1.2 MB
N/A -
A2035290 Approaches to Falmouth, England N/A   Windows
       621.3 KB
N/A -
A2035370 Plymouth, England N/A   Windows
       1.1 MB
N/A -
A2035450 Portland Harbor, England N/A   Windows
       795.6 KB
N/A -
A2035600 Portsmouth, England N/A   Windows
       593.6 KB
N/A -
A2035710 Dover Harbor, England N/A   Windows
       248.3 KB
N/A -
A2035730 Dunkerque, France N/A   Windows
       125.6 KB
N/A -
A2035810 Dieppe, France N/A   Windows
       209.6 KB
N/A -
A2035840 Le Havre, France N/A   Windows
       627.7 KB
N/A -
A2036130 Saint Malo, France N/A   Windows
       708.4 KB
N/A -
A2036460 Approaches to Brest, France N/A   Windows
       251.9 KB
N/A -