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

    • Executive Summary 

    • Abbreviations 

    • Introduction 

    • Design Guidance 

    • Operational Guidance 

    • Appendix 1 – Diving Support Vessels 

    • Appendix 2 – Pipelay Vessels 

    • Appendix 3 – ROV Support Vessels

    • Appendix 4 – Crane Vessels

    • Appendix 5 – Float-over Vessels 

    • Appendix 6 – Accommodation Vessels 

    • Appendix 7 – Drilling Vessels 

    • Appendix 8 – FPSO Vessels 

    • Appendix 9 – Shuttle Tankers 

    • Appendix 10 – Trenching Vessels 

    • Appendix 11 – Cable Lay/Repair Vessels 

    • Appendix 12 – Jack-up Vessels 

    • Appendix 13 – Offshore Supply Vessels (OSVs) 

    • Appendix 14 – Anchor Handling Vessels (AHVs) 

    • Appendix 15 – Well Stimulation Vessels 

    • Appendix 16 – Rock Placement Vessels 

    • Appendix 17 – Dredging Vessels 

    • Appendix 18 – Service Operations Vessels (SOVs) 

    • Appendix 19 – DP Station Keeping Event Reporting 

    • Appendix 20 – Referenced Guidance Documents

    Date: Reason: Revision:
    Date:April 2024 Reason:QA review – Page 2, bookmarking and reference links updated; no change to content Revision:Rev. 5.2
    Date:August 2022 Reason:Appendix 1 – Paragraph 2.4 wording Revision:Rev. 5.1
    Date:June 2021 Reason:Revision of Appendix 18 (SOV). Plus, changes throughout the document to ensure position keeping reflects control of both position and/or heading Revision:Rev. 5
    Date:January 2019 Reason:To review that the guidance meets current industry practice following the recent publication of IMO MSC.1/Circ.1580 Revision:Rev. 4
    Date:February 2017 Reason: Revision:Rev. 3
    Date:August 2022 Reason:Appendix 1 – Paragraph 2.4 wording Revision:Rev. 5.1
    Date:June 2021 Reason:Revision of Appendix 18 (SOV). Plus, changes throughout the document to ensure position keeping reflects control of both position and/or heading Revision:Rev. 5
    Date:January 2019 Reason:To review that the guidance meets current industry practice following the recent publication of IMO MSC.1/Circ.1580 Revision:Rev. 4
    Date:February 2017 Reason: Revision:Rev. 3
    Date:April 2016 Reason: Revision:Rev. 2
    Date:September 1991 Reason:Initial publication Revision:Rev.