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

    • Cable-Laid Slings

    • Termination

    • Sling Rating

    • Cable-Laid Grommets

    • Grommet Rating

    • Testing and Certification

    • Identification, Marking and Record of Lifts

    • Inspection and Thorough Examination

    • Informative References

    Date: Reason: Revision:
    Date:April 2025 Reason:Some sections were re-ordered; a new section on handling, transportation and storage; information on wire rope grading; sling-eye maximum opening angle included; nominal pin diameter added for slings > 451-500 mm; references updated. Revision:Rev. 2
    Date:April 2019 Reason:Reviewed by a workgroup and no changes required Revision:Rev. 1.1
    Date:September 2016 Reason:To include additional construction methods; to align with current codes; to amend formulae Revision:Rev. 1
    Date:August 2008 Reason:Initial publication Revision:Rev.
  • Date: Reason: Revision:
    Date:March 2025 Reason:Links updated Revision:Rev. 0.3
    Date:March 2024 Reason:Update of page 2, document categorisation, and layout; no change to technical content Revision:Rev. 0.2
    Date:March 2022 Reason:Minor edit to Section 3.5 Revision:Rev. 0.1
    Date:May 2019 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:February 2025 Reason:New requirements for vessel particulars completion; introduction of risk-based categories; general update Revision:Rev. 5
    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: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.
    • Introduction

    • DP station keeping summary for 2024

    • Conclusion

    • 2024 DP case studies

    Date: Reason: Revision:
    Date:February 2025 Reason:Initial publication Revision:Rev.
    • Aim

    • Acronyms

    • Introduction to Operational Activity Planning

    • Applicable Reference Documents

    • Decision Support Tools

    • References

    • Appendix 1 – Example of an ASOG Table

    • Appendix 2 – Example of a Configuration Table (CAM / TAM) in the ASOG

    Date: Reason: Revision:
    Date:January 2025 Reason:Committee & industry review, minor changes applied Revision:Rev. 3
    Date:November 2023 Reason:Document quality check; new template applied; no material change to content Revision:Rev. 2.1
    Date:January 2021 Reason: Revision:Rev. 2
    Date:December 2017 Reason:To review that the guidance meets current industry practice following recent publication of IMCA MSC.1/Circ.1580 Revision:Rev. 1
    Date:November 2012 Reason: Revision:Rev.