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.
    • Introduction
    • Glossary
    • Application Scope of the MLC - Does it Apply to You?
    • Are You Ready for a PSC Inspection?
    • Carrying Out PSC Under the MLC: Main Elements of Inspection
    • Carrying Out PSC Under the MLC: Procedure
    • What Can Companies Do to Prepare?
    • References
    Date: Reason: Revision:
    Date:June 2024 Reason:Page 2 and bookmarking updated; no change to content Revision:Rev. 0.1
    Date:June 2018 Reason:Document reviewed - retained with no changes Revision:Rev.
    Date:December 2016 Reason:Initial publication Revision:Rev.
    • Abbreviations

    • Introduction to FMEA

    • DP FMEA Methodology

    • DP FMEA Proving Trials

    • References

    • Appendix 1 – Specifying an FMEA

    • Appendix 2 – The Requirements for Compliance with IMO DP Class

    • Appendix 3 – Comparison of Guidance – IMO MSC/Circ. 645 and IMO MSC.1/Circ. 1580

    • Appendix 4 – FMEA Checklist

    Date: Reason: Revision:
    Date:May 2024 Reason:Reviewed and upgraded to Code of Practice as part of IMCA Governance strategy; content updated to reflect current industry thinking, plus addition of Appendix 4 – FMEA Checklist, and class approval for Section 2.8 Revision:Rev. 3
    Date:October 2019 Reason:General update and to review that the guidance meets current industry practice following the recent publication of IMO MSC.1/Circ.1580 Revision:Rev. 2
    Date:April 2016 Reason:Full rewrite Revision:Rev. 1
    Date:April 2002 Reason:Initial publication Revision:Rev.
    • System Overview

    • Inspection Types

    • Inspector Competence and Accreditation

    • Inspection Process

    • Access to Inspection Reports

    • Findings Analytics

    • Quality Assurance Process

    • Glossary

    • Further Information

    Date: Reason: Revision:
    Date:May 2024 Reason:Foreword updated; print layout improved; no change to content Revision:Rev. 4.2
    Date:August 2023 Reason:Updated guidance on closing meetings (4.5.2), minor edit to 4.5.4 Revision:Rev. 4.1
    Date:November 2022 Reason:New sections 6-7 on analytics hub and QA process; general review and minor updates Revision:Rev. 4
    Date:October 2018 Reason:Rewritten to focus on system principles and consolidate guidance Revision:Rev. 3
    Date:February 2018 Reason:Updated to reflect IT changes and mandatory inspector accreditation Revision:Rev. 2
    Date:August 2023 Reason:Updated guidance on closing meetings (4.5.2), minor edit to 4.5.4 Revision:Rev. 4.1
    Date:November 2022 Reason:New sections 6-7 on analytics hub and QA process; general review and minor updates Revision:Rev. 4
    Date:October 2018 Reason:Rewritten to focus on system principles and consolidate guidance Revision:Rev. 3
    Date:February 2018 Reason:Updated to reflect IT changes and mandatory inspector accreditation Revision:Rev. 2
    Date:March 2013 Reason:Updated to include IMCA M 189 for small workboat inspections Revision:Rev. 1
    Date:June 2007 Reason:Updated to reflect release of IMCA M149 Issue 6 Revision:Rev. 0.6
    Date:September 2005 Reason:Updated to reflect release of IMCA M149 Issue 5 Revision:Rev. 0.5
    Date:March 2005 Reason:Updated to reflect release of IMCA M149 Issue 4 Revision:Rev. 0.4
    Date:June 2002 Reason:Initial publication Revision:Rev.