Actually, the International Aeronautical and Maritime Search and Rescue (IAMSAR) Manual officially consists of only three volumes
The system is built on a "triad" structure where each volume serves a specific character in a rescue mission: Volume I (The Architect) Focuses on Organization and Management iamsar volume 4
. There is no official "Volume 4" published by the IMO or ICAO; however, some regional frameworks or national plans (like the Asia/Pacific SAR Plan ) are currently in their Version 4.0 , which might be the source of the confusion. International Civil Aviation Organization It tells the story of how a country
. It tells the story of how a country builds its SAR system, sets up laws, and signs international treaties so that help is always ready before an emergency even happens. Volume II (The Brain) Focuses on Mission Coordination sets up laws
If you are following the "story" of how the global SAR system works through its intended volumes, it typically flows like this: The "Story" of the IAMSAR System