Why the IMO is enforcing change from 2026

From 1 January 2026, the International Maritime Organization (IMO) will prohibit the use and storage of PFOS-containing firefighting foams under amendments to SOLAS (Chapter II-2, Regulation 10, MSC.532(107)). The ban applies to both new and existing ships, which must comply by their first safety survey after that date.

PFOS, a type of PFAS (“forever chemicals”), is environmentally persistent and poses serious health risks, including cancer and hormonal disruption .

What it means for vessels

Ships must:

• Thoroughly clean PFOS residues from firefighting systems.
• Dispose of PFOS-containing agents responsibly at approved shore-agent facilities.
• Replace them with IMO-approved PFOS-free firefighting media, with proper certification
• Test samples when documentation is missing to confirm compliance by recognized methods Transition to PFAS-Free, Fluorine-Free Foams

Fluorine-free foams are now available and match the performance of traditional AFFF f. In 2024, the US Coast Guard approved the first PFAS-free foam completing NFPA 11 Annex F. Systems may require modifications to ensure compatibility with new solutions, under MED or EN‑1568 standards

Compliance roadmap

To meet the 2026 deadline:

1. Ensure all firefighting media are PFOS-free.

2. Clean foam systems of PFOS residues.

3. Dispose of PFOS media at accredited shore facilities

4. Install IMO-approved PFOS-free foams and update vessel hazardous inventory.

5. Document everything onboard for survey compliance SAFETY4SEA+5infomarine.net+5mail.infomarine.net+5iims.org.uk+1.

Benefits of early action

Acting early enables:

• Regulatory compliance and avoidance of penalties.
• Updated, eco-friendly, and safe firefighting capabilities.
• Improved ESG rating and sustainable credentials.
• Smooth survey process post-1 January 2026.