
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.
Total entries: 515
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European Commission takes action to simplify sustainability reporting and due diligence
On 26 February 2025, the European Commission published a simplification package on sustainability reporting and due diligence, which consists of two Omnibus Directives aimed at simplifying and streamlining the regulatory framework.
March 2025
Information Note
Other
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Guidelines for isolation and intervention: Diver access to subsea systems
This document provides comprehensive guidelines for isolation and intervention in subsea systems, specifically for diver access. It is aimed at project managers, engineers, and safety personnel involved in developing safe isolation schemes for subsea systems.
Revision 0.1 | March 2025
Guidance
Recommended Practice
Introduction
Glossary
Principles of Isolation
Flowline/Manifold/Tree and Wellhead Systems
Subsea Control and Umbilical Systems
Isolation Flowchart and Isolations Summary Table
Typical System Drawings
References
Date: Reason: Revision: Date:March 2025 Reason:Page 2, reference links & bookmarking updated; no change to technical content Revision:Rev. 0.1 Date:October 2009 Reason:Initial publication Revision:Rev. Date: Reason: Revision:Rev. -
DP practitioner accreditation scheme handbook
This DP Practitioner Accreditation Scheme Handbook outlines IMCA's accreditation process for Dynamic Positioning (DP) practitioners, detailing the requirements, examination process, and revalidation criteria.
Revision 0.3 | March 2025
Guidance
Informative Guidance
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. -
Summary of the 18th Intersessional Working Group on the Reduction of Greenhouse Gases from Ships (ISWG_GHG 18)
The revised IMO GHG Strategy which was adopted in 2023 (see RESOLUTION MEPC.377(80)) committed Member States to agreeing and adopting mid-term measures (MTMs)
February 2025
Information Note
Other
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Guidance on deck decompression chamber (DDC) operations for the therapeutic treatment of divers
The document provides comprehensive guidance on the operation of Deck Decompression Chambers (DDCs) for the therapeutic treatment of divers, emphasising the importance of competence, emergency planning, and adherence to safety standards.
February 2025
Guidance
Recommended Practice
Background
IMCA’s Position on DDCs
Application
Project Planning
Roles and Responsibilities
Third Party Hyperbaric Facilities
Familiarisation, Drills and Exercises
DDC: Technical Specifications
Medical Support and Equipment
Next of Kin, Family, and Media Liaison in the Event of an Incident
Annex 1 – Example of a Generic DDC Checklist
Date: Reason: Revision: Date:February 2025 Reason:Initial publication Revision:Rev.