Overview

Information to support you

​Below you will find information to support you in your use of the ADMIRALTY Raster Chart Service (ARCS), such as detailed user guides.

If you cannot find the answer to your questions, who you contact will depend on the nature of your query. Please see who to contact below for more details.

User guides and other useful resources

The ARCS full user guide includes information on getting started, installation and maintenance, troubleshooting and seeking support.

Download the ARCS User Guide

Digital media ordering schedule

Below you'll find issue dates for ARCS discs. Each disc corresponds to an area of coverage outlined in the diagram below. Please also note that RC11, which is not shown in the diagram, contains ocean charts (1: 3,500,000 and smaller).

Download the disc coverage diagram

Area CDROM

​Issue Date

Week of Issue

Re-issue Date

Area CDROM

RC1

​Issue Date

15 January 2026

Week of Issue

03/26

Re-issue Date

9 July 2026

Area CDROM

RC2

​Issue Date

20 November 2025

Week of Issue

47/25

Re-issue Date

25 June 2026

Area CDROM

RC3

​Issue Date

14 May 2026

Week of Issue

20/26

Re-issue Date

Area CDROM

RC4

​Issue Date

29 January 2026

Week of Issue

05/26

Re-issue Date

30 July 2026

Area CDROM

RC5

​Issue Date

12 February 2026

Week of Issue

07/26

Re-issue Date

Area CDROM

RC6

​Issue Date

19 March 2026

Week of Issue

12/26

Re-issue Date

Area CDROM

RC7

​Issue Date

28 May 2026

Week of Issue

22/26

Re-issue Date

Area CDROM

RC8

​Issue Date

5 March 2026

Week of Issue

10/26

Re-issue Date

Area CDROM

RC9

​Issue Date

4 December 2025

Week of Issue

49/25

Re-issue Date

Area CDROM

RC10

​Issue Date

16 April 2026

Week of Issue

16/26

Re-issue Date

Area CDROM

RC11

​Issue Date

9 October 2025

Week of Issue

41/25

Re-issue Date
CONTACT US

Who to contact

In the first instance, please contact your ADMIRALTY Distributor. If they are unable to help then our customer service team can be contacted on customerservices@ukho.gov.uk or phone +44 (0) 1823 484444.

Contact us