What is ALRS or Admiralty List of Radio Signals and its volume in detail ?

• Listing of all Radio Direction Finding Stations.
• Listing of all Major Satellite Navigation System fully explained and illustrated with full colour diagrams and photographs.
• Worldwide Listing of Beacon Transmitting DGPS corrections.
• International Standard and Daylight Saving Times and Dates.
• International Time Signal Broadcast Details.
• Electronic Position Fixing System details including illustrative diagrams.
• Easily updated from weekly Admiralty Notices to Mariners.
• Revised Annually.

Volume 3 – Maritime Safety Information Services NP 283 (Parts 1 & 2)

• Maritime Weather services and Maritime safety information broadcasts.
• Worldwide listing of NAVTEX Stations.
• Submarine and Gunnery warning Details (Subfacts and Gunfacts)
• Worldwide Listing of Radio-Fascimile Stations, frequencies and index of map areas.
• Easily Updated from weekly Admiralty Notices to Mariners.
• Revised Annually.

ALRS Volume 3 offers worldwide coverage in two parts:

1. Part 1 : NP282 (1) – Maritime Safety Information Services; Europe Africa and Asia (excluding Far east)
2. Part 2 : NP282 (2) – Maritime Safety Information Services; Oceania, the Americas and Far East.

Volume 4 – Meteorological Observation Stations NP284