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Hull Cleaning & Coatings: 2026 Compliance Guide for Australian Ports
Navigating Australia's Hull Cleaning and Biofouling Regime
For ship operators and masters preparing for a Port of Brisbane call in 2026, managing your vessel's underwater profile is about much more than fuel efficiency. Biofouling management is mandatory for all vessels arriving in Australian territorial seas from international locations. Crucially, this regime is administered by the Department of Agriculture, Fisheries and Forestry (DAFF) under the Biosecurity Act 2015, as detailed on their Biofouling in Australia page, and not by the Australian Maritime Safety Authority (AMSA).
While AMSA strictly enforces the Anti-Fouling Systems (AFS) Convention and port state control (PSC), DAFF holds the keys to biosecurity clearance. Operators must accurately report their hull condition and management strategies through the Maritime Arrivals Reporting System (MARS) prior to arrival. If you are relying on Berthfile's biofouling copilot to draft your MARS paperwork, you already know that precision in this reporting is non-negotiable.
Proactive Management: Coatings Are Not Enough
A common misconception is that a high-quality, compliant anti-fouling coating automatically satisfies Australian biofouling regulations. It does not. There are exactly three accepted proactive biofouling management practices a commercial vessel can rely on for arrival:
- Operating under a Biofouling Management Plan and Record Book consistent with the Australian Biofouling Management Requirements (ABFMR).
- Cleaning all biofouling from the hull and niche areas within 30 days prior to arrival.
- Implementing an alternative management practice pre-approved by DAFF (with applications required at least 30 days before arrival).
Under the ABFMR Version 4, which took effect on 30 April 2026, documentation standards for in-water cleaning reports are strictly defined in Appendix B. If your vessel underwent reactive cleaning prior to sailing for Brisbane, the resulting documentation must meet these exact standards to satisfy biosecurity officers.
The AFS Convention and Coating Degradation
The AFS Convention, strictly enforced by AMSA, prohibits the use of harmful organotins and cybutryne in anti-fouling paints. Operators must carry a valid International Anti-Fouling System Certificate. However, even with a compliant coating, its efficacy degrades over time depending on the dry-dock interval, trading patterns, and idle periods. When a vessel sits idle in warm, nutrient-rich waters, the biocide release rate may drop below the critical level needed to prevent colonization. This makes scheduled in-water grooming a necessity rather than an optional maintenance task.
Global Guidelines vs. Australian Rules
At the international level, the International Maritime Organization (IMO) introduced the updated 2023 Guidelines for the control and management of ships' biofouling (Resolution MEPC.378(80)), which superseded the older 2011 guidelines. While these IMO guidelines provide a globally consistent voluntary framework, Australia treats its own ABFMR as a binding minimum. Ship managers must ensure their Biofouling Management Plans are updated to reflect the latest IMO standards while strictly adhering to DAFF's specific documentary requirements.
Capture, Containment and Queensland Rules
When deploying remotely operated vehicles (ROVs) or diver-operated carts for hull cleaning, the equipment must feature active capture and containment mechanisms. Federal biosecurity standards mandate that all removed biological material and depleted coating flakes be filtered to a microscopic level to prevent viable propagules from escaping into the local marine environment. In-water cleaning without capture is generally prohibited in Australian waters unless the vessel only has a light slime layer (microfouling), and even then, operators must clear this through the proper reporting channels.
If you plan to conduct in-water hull cleaning while at anchor or alongside in Queensland, federal capture requirements are only the beginning. Operators must secure separate state-level approvals from Biosecurity Queensland and the Department of Environment, Tourism, Science and Innovation (DETSI). Unauthorized reactive cleaning can result in severe operational delays and regulatory action.
Niche Areas and PSC Risks
While the flat bottom and vertical sides are easy to inspect, niche areas, such as sea chests, thruster tunnels, and gratings, are notorious for harbouring invasive species and often trigger biosecurity interventions. Proper niche area management requires scheduled grooming and inspection in the period between dry-dockings.
Furthermore, poor hull maintenance can be an indicator of broader safety management issues, which remains a primary focus for PSC inspectors. According to AMSA's 2024 Annual Inspections Report, the authority recorded 133 detentions from 2,264 initial inspections (a 5.9% detention rate). Safety Management (ISM) was the largest detainable-deficiency category, accounting for 27.57% of detainable deficiencies. Utilizing Berthfile's free PSC risk check can help operators identify documentation and maintenance gaps before AMSA boards the vessel.
Actionable Takeaways for Your Next Call
- Verify Your Plan: Ensure your Biofouling Management Plan and Record Book align with both MEPC.378(80) and ABFMR Version 4.
- Document Niche Cleaning: If you conduct in-water cleaning within 30 days of arrival, ensure the service provider's report explicitly details the cleaning of sea chests, thrusters, and gratings, complying with ABFMR Appendix B.
- Plan Approvals Early: If in-water cleaning is required in Queensland, begin the dual approval process (Federal and State) weeks in advance.
Disclaimer: This article provides general information regarding hull cleaning and biofouling compliance and does not constitute legal or regulatory advice. Always consult official DAFF and AMSA publications or your legal counsel for specific operational guidance.