Iamsar Volume 4 May 2026

. 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

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 iamsar volume 4

Actually, the International Aeronautical and Maritime Search and Rescue (IAMSAR) Manual officially consists of only three volumes This is the story of the Rescue Coordination Center (RCC)

. This is the story of the Rescue Coordination Center (RCC). It covers the complex math of search patterns, calculating drift, and managing the "Search Action Plan" while the clock is ticking. Volume III (The Boots on the Ground) Focuses on Mobile Facilities This is the most famous volume, carried on

. This is the most famous volume, carried on ships and aircraft. It tells the story of the "On-Scene Coordinator" (OSC)—the captain or pilot who arrives first and must take charge, launch lifeboats, and communicate with the distressed craft. Why you might see "Volume 4" references: