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

• All MET Observation Stations listed and worldwide coverage.
• Revised every 18 months.

Volume 5 – Global Maritime Distress and Safety System (GMDSS) NP285

• The Worldwide communication requirements for Distress Search and Rescue.
• The only SOLAS compliant guide for GMDSS published in English.
• Contains pull out chart size diagrams showing world coverage for all Maritime search and Rescue Regions.
• Diagrams depicting worldwide operational DSC ranges.
• Essential information for GMDSS students.
• Updated from Weekly Notices to Mariners.
• Revised Annually.

Volume 6 – Pilot Services, Vessel Traffic services and Port Operations NP 286 ( Parts 1,2,3,4 & 5)