Security Related Information to Mariners
ADMIRALTY Maritime Security Planning Charts contain safety-critical information to assist bridge crews in the planning of safe passages through high risk areas. All information has been gathered by the UKHO through work with NATO and other government organisations, ensuring each chart has the most accurate, up-to-date and verified information available.
These charts should be maintained so that they are fully up-to-date with the latest security-critical navigational information. The Security Related Information to Mariners (SRIM) service provides all of the data you need to maintain the Q Series charts as well as additional security related information which will aid passage planning.
Security Related Information to Mariners is provided free of charge on this website. ADMIRALTY Maritime Security Planning Charts are available for purchase from official ADMIRALTY Chart Agents.
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Promulgation of Corrections to Q Series Planning Charts
These charts will be updated/corrected using the established ADMIRALTY Notices to Mariners process.
Promulgation of Security Related Information to Mariners (SRIM)
New threats, embargo, exclusion zones and specific advice will be promulgated using the Security Related Information to Mariners (SRIM) and can be viewed by clicking on the relevant Q Chart Tab.
The SRIM for each chart will sequentially numbered and identified by a unique title as follows: Q Chart / Year / Sequence Number (e.g. Q6111 / 16 / 001) meaning the first SRIM of 2016 for chart Q6111.
The data and information within the Security Related Information to Mariners (SRIM) is compiled and validated by government authorities and provides advice to the master mariner, in support of the passage planning process in accordance with SOLAS Ch V Reg 34 (Safe navigation and avoidance of dangerous situations.) Where possible any safety critical information will be promulgated by the World Wide Navigational Warning System (WWNWS).