Guidance for diving supervisors
- Recommended Practice
- Revision 2 - October 2025
This IMCA Recommended Practice aims to improve performance in the marine contracting industry by providing diving supervisors with comprehensive guidance and best practice for all aspects of commercial diving operations
The document covers safety protocols, equipment handling, and emergency procedures, and includes information on IMCA certification schemes for diving supervisors and life support technicians, as well as guidelines for assessing and assuring competence.
Contents
- Introduction
- Diving Physics
- Diving Medicine and First Aid
- Environmental Conditions
- Communications
- Documentation
- Management and Planning
- Support Locations
- Gas Handling
- General Diving Procedures
- Surface Orientated Air Diving
- Surface Orientated Mixed Gas Diving
- Closed Bell Diving
- Chambers (PVHOs)
- General Safety Requirements
- References
- Appendix A – Definition of Terms
- Appendix B – List of Acronyms
- Appendix C – IMCA Certification Schemes
- Appendix D – Maximum Bottom Time Limitation
- Appendix E – Weather Terminology and Classifications
- Appendix F – Vessel Hazard Drawings
- Appendix G – Summary of Changes Incorporated in this Revision 2 of IMCA D022
Revision
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Rev. 2 - October 2025Full technical review to align with current industry best practice
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Rev. 1.3 - June 2024Section 10.1 updated with tables 1 &2 from DMAC 07
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Rev. 1.2 - August 2016Section 10.3 updated to incorporate AODC 020 (later replaced by IMCA D022)
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Rev. 1.1 - April 2015Sections 9.13, 14.34.2 and 15.21 updated
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Rev. 1 - May 2014To reflect changes in IMCA diving documentation
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Rev. - May 2000Initial publication