Find out more about the types of IMCA documents and our definitions.

Our Guidance Register also lists documents in each series, with status, latest revision and a website link for details and downloading.

    • Introduction 

    • Abbreviations and Definitions 

    • Man Overboard Risk 

    • Autonomous Mobile Radio Beacon 

    • Legislation and Standards

    • Assessment of MOB Systems 

    • Conclusion 

    • Reference Standards

    Date: Reason: Revision:
    Date:November 2024 Reason:Correcting date in Introduction from 2015 to 2024 Revision:Rev. 1.1
    Date:August 2024 Reason:Name changed from 'Research on personal locator beacons' to 'Research on autonomous maritime radio devices' Revision:Rev. 1
    Date:October 2016 Reason:Initial publication Revision:Rev.
    Date: Reason: Revision:Rev.
    • Glossary of Terms
    • Introduction
    • Scope
    • Background
    • Health and Safety
    • Principles of Operation - How Magnetic Rope Testing (MRT) Works
    • Parameters
    • Verification and Calibration
    • Manufacturers' Operating Guidelines
    • Competence and Training
    • Interpretation of Data
    • MRT Trace Reports
    • Rejection Criteria
    • Recording and Retention of Records
    • References
    Date: Reason: Revision:
    Date:July 2024 Reason:Complete document revision to remain current with industry practice Revision:Rev. 2
    Date:February 2024 Reason:Amendment to MRT definition and addition of MFL definition; updating preface, reference links and layout Revision:Rev. 1.1
    Date:October 2018 Reason:Extensive document revision which includes rejection criteria and MRT equipment operator levels of competence and training Revision:Rev. 1
    Date:August 2009 Reason:Initial publication Revision:Rev.
  • Date: Reason: Revision:
    Date:June 2024 Reason:Page 2 and bookmarking updated; no change in content Revision:Rev. 0.1
    Date:February 2003 Reason:Initial publication Revision:Rev. 0
  • Date: Reason: Revision:
    Date:June 2024 Reason:Revision of bookmarking and withdrawal of reference to out of date information note; no other change in content Revision:Rev. 0.1
    Date:March 2005 Reason:Initial publication Revision:Rev. 0
  • Date: Reason: Revision:
    Date:June 2024 Reason:Page 2 and bookmarking revised; no change to content Revision:Rev. 0.1
    Date:March 2004 Reason:Initial publication Revision:Rev. 0