The UKHO produces an Annual Summary of Notices to Mariners (NP247) which is split into two parts. Part one contains the Annual Statutory Notices to Mariners Numbers 1-26, a summary of Temporary and Preliminary Notices to Mariners still in force at the start of the year, and part two contains a Cumulative Summary of Amendments to Admiralty Sailing Directions and other miscellaneous Admiralty publications.