Navigating PFAS Foam Regulations: What Marine and Offshore Operators Need to Know in 2025

November 24, 2025
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Between 2025 and 2035, every vessel and offshore installation using AFFF will need to transition - and the first deadline arrives in less than twelve months.

New PFAS restrictions from the EU, UK, and IMO are arriving in stages, directly impacting vessel operations, safety systems, and compliance planning across the marine and offshore sectors.

Here we’ll highlight the key regulatory changes and practical steps that matter most as deadlines approach. It's drawn from our comprehensive PFAS transition guide, available to download below.

Understanding the Regulatory Shift

Regulators across Europe and the UK are tightening controls on PFAS-containing firefighting foams due to their environmental persistence and contamination risks. The result is a phased transition away from legacy C8foams, with stricter rules around C6 AFFF use and increasing emphasis on validating fluorine-free alternatives (F3).

Two critical milestones are approaching:

  • 23 October 2025: PFAS foams banned aboard civil vessels calling at EU ports.
  • 1 January 2026: SOLAS ban on PFOS foams takes effect globally.

With these deadlines on the horizon, operators should already be assessing their foam inventories and developing transition plans.

Why Offshore Installations Require a Different Timeline

Offshore assets operate under conditions that extend well beyond those found on land or in sheltered waters. Extreme temperatures, wind exposure, and seawater induction all significantly influence foam performance. Recognising these operational realities, regulators have granted offshore installations an extended transition window until 2035.

This extended timeline allows operators to:

  • Maintain high-performance C6 AFFF during the transition period.
  • Thoroughly trial and validate emerging F3 formulations under actual operating conditions.
  • Align foam replacement activities with planned shutdowns and maintenance cycles.

Performance remains non-negotiable. Environmental benefits must be achieved without compromising operational safety and reliability.

Evaluating Your Foam Transition Options

C6 AFFF

A proven, compliant solution for offshore and high-risk environments.

  • Requires minimal system modifications.
  • Delivers reliable performance with seawater and in low-temperature conditions.
  • Permitted for use during the extended offshore transition period.

F3 Fluorine-Free Foams

Environmentally preferable, though performance characteristics vary significantly.

  • May face challenges in high-wind environments, sub-zero temperatures, or with seawater applications.
  • Often requires proportioner adjustments or broader system modifications.
  • Best suited for lower-risk applications or land-based operations unless comprehensively validated for offshore use.

Selecting the right approach depends on your specific operational environment and risk profile.

A Practical Four-Step Framework

Most organisations begin their transition with these foundational actions:

1. Conduct a comprehensive foam inventory audit

Identify any remaining C8 foams, verify PFOS content levels, and test for cross-contamination.

2. Develop a replacement timeline

Coordinate foam changeouts with scheduled surveys, maintenance windows, and port calls to minimise operational disruption.

3. Maintain complete documentation

Record all testing results, disposal procedures, Certificates of Analysis, and Inventory of Hazardous Materials (IHM) updates.

4. Verify system compatibility before deployment

Test proportioning equipment, flow rates, and expansion characteristics before commissioning new foam products.

Unique Operational Challenges Offshore

Offshore and marine platforms operate in high-risk, high-consequence environments with confined spaces, hydrocarbon processing, and limited emergency response options.

Key challenges include:

  • Extreme conditions: strong winds, seawater use, and low temperatures (down to −18 °C).
  • System reliability: forceful application and seawater compatibility are essential.
  • Operational continuity: foam replacement must align with maintenance windows.
  • Environmental sensitivity: operations occur within delicate marine ecosystems.

The extended 2035 transition period recognises these realities and allows operators to choose the most appropriate balance between performance, compliance, and environmental responsibility.

4-Step PFAS Foam Compliance Action Plan

Step 1: Audit Current Foam Inventory

  • Identify legacy C8 foams (foam purchased after 2015 is unlikely to be C8).
  • Conduct TOP assay testing for PFAS detection.
  • Verify Certificates of Analysis confirm PFOS <10 mg/kg for SOLAS compliance.
  • Test for tank contamination to prevent cross-contamination of new foams.

Step 2: Plan Your Replacement Strategy

  • Schedule removal and replacement before survey deadlines.
  • Follow a certified tank cleaning protocol and dispose of contaminated foam safely.
  • Choose your transition path:
    • Immediate F3 adoption for low-risk or land-based operations.
    • Managed C6 AFFF use for offshore and high-risk environments.

Step 3: Update Compliance Documentation

Maintain detailed records for inspections and audits, including:‍

  • Certificates of Analysis and test report.
  • Tank cleaning and disposal documentation.
  • Updated Inventory of Hazardous Materials (IHM).

Step 4: Verify System Compatibility

Before re-commissioning:

  • Confirm proportioner settings and flow rates.
  • Test expansion rates and system performance under operational conditions.
  • Record results as part of compliance evidence.

Balancing Multiple Priorities

While regulatory requirements are becoming more stringent, the fundamental objective remains unchanged: protecting people, assets, and the environment. The transition to PFAS-free operations is underway, but foam technology continues to evolve, particularly for demanding offshore applications. The extended timeline to 2035 provides valuable opportunity to evaluate emerging solutions without compromising safety

Prioritise vessels with approaching survey deadlines or regular EU port calls.

Access the Complete PFAS Transition Guide

This article covers the essential elements, but our full guide provides significantly more depth:

  • Detailed regulatory timelines extending through 2035
  • Comprehensive operational checklists
  • In-depth foam performance analysis
  • Offshore-specific implementation best practices
  • A structured transition framework ready for immediate application

The guide is designed specifically for operators superintendents, and HSEQ teams navigating this complex and rapidly evolving regulatory environment.

Download the complete guide to access all recommendations and ensure your foam transition strategy is fully prepared for upcoming deadlines.

Author's Photo

About the Author

Keith Robertson is a trusted leader in offshore, wind farm, and marine safety, with over 40 years in the industry. Known for his expertise in fire and safety systems, Keith has a proven track record of driving growth through direct sales, product innovation, and streamlined safety solutions that reinforce operational efficiency and core business values.

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