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

    • Introduction

    • Glossary

    • Purpose of this Guidance Note

    • Safety and Environmental Issues

    • Equipment

    • Specification, Design and Fabrication of Concrete Mattresses

    • Handling, Deployment, Installation, Repositioning and Decommissioning

    • Anti-Scour and Fronded Mattresses

    • References

    • Appendices

      • Tick Box Checklists

      • Example Drawings

    Date: Reason: Revision:
    Date:February 2024 Reason:Updated to include systems for handling multiple concrete mattresses Revision:Rev. 2
    Date:September 2011 Reason:Updated to include reference to the use of ROVs in mattress handling Revision:Rev. 1
    Date:November 2007 Reason:Initial publication Revision:Rev. 0