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Biofouling has long been seen as a performance and fuel-efficiency issue, but for a growing number of ports, it’s now a regulatory and financial one. Countries such as Brazil, Australia, New Zealand, and even U.S. states like California are moving beyond voluntary guidelines, enforcing strict hull-cleanliness rules backed by inspections, fines, and in some cases, outright denial of entry. For shipowners, this shift means biofouling management is no longer just about saving on fuel, it’s about avoiding operational delays, unexpected costs, and reputational risk in key trading regions.
Top Countries/Ports with Active Fines and Enforcement
1️⃣ Brazil 🇧🇷
Brazil just moved from guidance to real enforcement on hull fouling. The Navy’s revised NORMAM-401/DPC took effect in June 2025, and full penalty enforcement starts February 1, 2026. Ships ≥24 m calling Brazil must arrive with a clean hull and documented biofouling management, or face fines, delays, or denial of entry.
What Brazil Requires Now
Clean Hull on Arrival: Vessels must arrive free of macrofouling or conduct approved cleaning.
Biofouling Management Plan & Record Book: Documentation aligned with IMO 2023 guidelines is expected onboard.
Applies to ≥24 m LOA: Both foreign calls and transits between Brazil’s marine biogeographic regions.
Evidence on Request: Inspection teams may review records and recent hull-husbandry actions.
Enforcement Timeline & Consequences
Milestone
Meaning
June 2025 — Rules in force
NORMAM-401/DPC published and effective; inspections and documentation checks begin.
Feb 1, 2026 — Full penalties
Non-compliance may trigger fines, operational restrictions, and potential entry denial.
Fines & remedies
Penalty exposure up to BRL 2,000,000 in severe environmental cases; cleaning or detainment possible.
Bottom line: If you trade with Brazil from 2026 onward, hull hygiene and paperwork aren’t optional, they're mandatory.
Brazil Biofouling Compliance — Owner’s Quick Guide
Requirement
Who/When
What to Prepare
Operational Impact
Clean hull on arrival
All vessels ≥24 m calling Brazil
Recent cleaning/inspection evidence; photos, work orders
Avoid ad-hoc cleaning delays or off-hire at anchorage
Biofouling Management Plan (BFMP)
Effective now (June 2025)
Plan aligned to IMO 2023 guidelines; vessel-specific procedures
Faster inspections; demonstrates due diligence
Biofouling Record Book (BFRB)
Present on arrival
Up-to-date entries on coatings, dry-dock, in-water cleanings
Reduces risk of adverse findings during checks
Inter-region transits (within Brazil)
Moves between North/Northeast/South zones
Assess fouling risk before shifting biogeographic regions
Plan maintenance to avoid internal movement restrictions
Penalty exposure
From Feb 1, 2026
Compliance audit trail; agent briefed on evidence
Potential fines, detainment, or denial of entry if non-compliant
Preferred workflow
All Brazil calls 2025–26
Dry-dock/cleaning scheduling tied to Brazil rotations
Minimize last-minute in-water cleaning and schedule slippage
Note: Information is based on Brazil’s revised NORMAM-401/DPC regulations and industry P&I advisories as of 2025. Always verify current requirements with your local agent before arrival.
⚖️ Cost Exposure — Brazil (Quick Estimate)
Adjust fields — totals update live
Severity
Estimated fine (BRL)
Delay days
Off-hire per day (BRL)
Cleaning cost (BRL)
FX BRL→USD
Delay cost (BRL)
BRL 25,000
Total (BRL)
BRL 165,000
Total (USD)
—
Note: This tool is an estimate only. Fine ranges are drawn from Brazil’s NORMAM-401/DPC framework and industry advisories. Cleaning, delay, and FX inputs can vary. Always confirm current requirements and costs with your local agent and P&I club.
2️⃣ Australia 🇦🇺
Australia is already enforcing biofouling controls nationwide. Since June 15, 2022, vessels must report biofouling management in their pre-arrival submission, with an 18-month education phase that ended on December 15, 2023. Compliance is via three pathways: maintain an effective plan and record book, prove cleaning within 30 days of arrival (with report + photos/video), or use a pre-approved alternative method. Non-compliance can trigger enforcement actions.
How to Comply (Pick One)
Plan + Record Book: Keep an effective Biofouling Management Plan and Record Book onboard, current and vessel-specific.
Cleaned ≤30 Days: Provide a cleaning report plus supporting photos/video proving hull was cleaned within 30 days of arrival.
Pre-approved Method: Use an alternative management method that’s been pre-approved by the department.
Pre-Arrival Reporting: Declare biofouling status and documentation in the Australian pre-arrival report (MARS portal).
Ensures smooth inspections and compliance without extra cleaning
Cleaning ≤30 days before arrival
Any vessel choosing cleaning pathway
Cleaning report + photo/video evidence, completed within 30 days of arrival
Avoids issues if fouling level is higher than BFMP standards
Pre-approved alternative method
Vessels with special approval
Evidence of approval by Australian authorities for alternative measures
Provides flexibility for vessels unable to meet other pathways
Pre-arrival biofouling report
All vessels before entry
Submit via MARS portal, declare chosen compliance pathway and supporting evidence
Failure to report may lead to inspection delays or penalties
Evidence standards
All vessels using “cleaned ≤30 days” pathway
High-quality, date-stamped photos/video showing cleaned hull areas
Inadequate evidence may trigger additional inspection or cleaning orders
Note: Information is based on Australia’s Biosecurity Amendment (Biofouling) Regulations 2021 and official Department of Agriculture guidance. Always confirm current requirements before arrival.
⚖️ Cost Exposure — Australia (Quick Estimate)
Adjust fields — totals update live
Estimated penalty (AUD)
Delay days
Off-hire per day (AUD)
Cleaning cost (AUD)
FX AUD→USD
Delay cost (AUD)
AUD 30,000
Total (AUD)
AUD 100,000
Total (USD)
—
Note: This tool provides a rough estimate only. Australian enforcement may involve infringement notices or civil penalties on a case-by-case basis. Use current rates for off-hire and cleaning. Always confirm requirements and potential penalties with your local agent and P&I club.
3️⃣ California (U.S.) 🇺🇸
California’s Marine Invasive Species Program (MISP) requires vessels ≥300 GT to manage biofouling and submit the Annual Vessel Reporting Form (AVRF) at least 24 hours before their first California port call each calendar year via MISP.IO. Ships must maintain a Biofouling Management Plan and Record Book, with additional management required after extended residency (≥45 days in one location). Non-compliance can trigger administrative civil penalties, California law authorizes up to $27,500 per violation per day, and the State Lands Commission is updating procedures to assess these penalties.
How to Comply at a Glance
AVRF: Submit the Annual Vessel Reporting Form via MISP.IO ≥24 hours before your first CA port call each calendar year.
Plan & Record Book: Keep a Biofouling Management Plan and Biofouling Record Book onboard, current and vessel-specific.
Extended Residency: Apply biofouling management if the vessel remains ≥45 days in one location (laid-up, repair, etc.).
On Arrival: Be prepared to show documentation during inspections; ensure hull husbandry actions are logged and evidenced.
Enforcement Timeline & Consequences
Milestone
Meaning
2017 — Biofouling rules live
AVRF replaces prior hull-husbandry form; biofouling requirements take effect statewide.
Each year — AVRF due ≥24h
AVRF must be filed before the first California call of the calendar year via MISP.IO.
Extended residency (≥45 days)
Triggers mandatory biofouling management actions and documentation.
Penalties (active, ongoing)
State law authorizes administrative civil penalties up to USD $27,500 per violation per day.
Bottom line: In California, treat AVRF + biofouling documentation as a pre-arrival gate. If you’ve been idle ≥45 days, expect closer scrutiny and be ready with evidence.
California Biofouling Compliance — Owner’s Quick Guide
Requirement
Who/When
What to Prepare
Operational Impact
Annual Vessel Reporting Form (AVRF)
Vessels ≥300 GT; before first CA call each calendar year
Submit via MISP.IO ≥24 hours prior; keep submission receipt
Missing/late AVRF can trigger inspection delays and penalties
Biofouling Management Plan (BFMP)
All arrivals
Vessel-specific plan aligned with IMO 2023 guidance
Streamlines inspections; demonstrates due diligence
Minimizes delay risk; keeps port turnarounds predictable
Note: Summary based on California’s Marine Invasive Species Program requirements as applied to vessels ≥300 GT. Always confirm current guidance with the California State Lands Commission and your local agent.
⚖️ Cost Exposure — California (Quick Estimate)
Adjust fields — totals update live
Estimated penalty (USD)
Delay days
Off-hire per day (USD)
Cleaning cost (USD)
Delay cost (USD)
USD 30,000
Total (USD)
USD 85,000
Per-day sensitivity
+ USD 30,000 per extra day
Note: This tool is an estimate only. California can assess administrative civil penalties (statutory authority up to USD $27,500 per violation per day). Delay and cleaning costs vary by vessel and port. Confirm requirements and exposure with your agent and P&I club.
4️⃣ New Zealand 🇳🇿
New Zealand enforces one of the toughest clean-hull regimes under its Craft Risk Management Standard (CRMS). All vessels must provide evidence of biofouling management before arrival, and may be assessed against “clean hull” thresholds that vary by stay length (short-stay vs long-stay). Since May 1, 2025, a Biosecurity Pre-Arrival Report (PAR) is mandatory; non-compliance can lead to a Notice of Direction, cleaning orders, or being turned away.
How to Arrive Compliant
Evidence Before Arrival: Provide proof of biofouling management under CRMS (plan, records, recent cleaning/inspection).
Clean Hull Thresholds: Short-stay vessels may arrive with a slime layer and gooseneck barnacles (limited early-stage fouling); long-stay vessels face stricter “slime-only” expectations.
Pre-Arrival Report (PAR): File the Biosecurity PAR before arrival; expect risk-based assessment on entry.
Be Inspection-Ready: Keep date-stamped photos/diver reports and coatings history available for review.
Enforcement Timeline & Consequences
Milestone
Meaning
CRMS in force (ongoing)
All vessels must demonstrate biofouling management before arrival.
May 1, 2025 — PAR mandatory
Biosecurity Pre-Arrival Report required; vessels may be targeted for hull assessments.
Weak evidence increases chance of inspection, direction, or cleaning order
In-Water Cleaning Controls
If cleaning in NZ waters
Use approved methods/locations; capture & disposal requirements
Unapproved cleaning can be refused; schedule impact if redone to standard
Non-Compliance Actions
Upon inspection failure
Prepare contingency: cleaning slot, alternative port plans
Notice of Direction, enforced cleaning, or refusal of entry
Preferred Workflow
All NZ-bound voyages
File PAR early; verify threshold vs. stay length; assemble photo/diver pack
Reduces inspection time and avoids last-minute cleaning delays
Note: Summary reflects Biosecurity New Zealand’s Craft Risk Management Standard (CRMS) and recent guidance. Confirm current requirements with your local agent before arrival.
⚖️ Cost Exposure — New Zealand (Quick Estimate)
Adjust fields — totals update live
Estimated penalty/fees (NZD)
Delay days
Off-hire per day (NZD)
Cleaning cost (NZD)
Capture/disposal (NZD)
FX NZD→USD
Delay cost (NZD)
NZD 30,000
Total (NZD)
NZD 90,000
Total (USD)
—
Note: NZ typically uses Notices of Direction and cleaning orders rather than fixed fines. Contractor/agency fees, capture/disposal, and delays vary by port and method. Use current rates and confirm requirements with your agent and P&I club.
Biofouling Watchlist: Countries Ramping Up Inspections and Rules
While Brazil, Australia, California, and New Zealand are leading with strict biofouling enforcement, other regions are quietly tightening their requirements. From enhanced inspection regimes in Europe to expanding documentation demands in Asia, the global tide is turning toward more formalized hull cleanliness oversight. Shipowners calling at these ports may not face immediate fines, but growing scrutiny can still mean costly delays, additional cleaning orders, or extra compliance paperwork.
Biofouling Watchlist — Countries Tightening Requirements
Country
Current Status
Key Details
🇳🇱 Netherlands
Emerging stricter inspections
Increasing spot-checks on underwater hull condition. While no fixed fine structure exists yet, vessels with heavy fouling may face requests for voluntary cleaning or delayed clearance.
🇸🇪 Sweden
Emerging stricter inspections
Similar to the Netherlands, Sweden is expanding inspection protocols and may require proof of recent hull maintenance for certain vessel types.
🇸🇬 Singapore
Growing documentation requirements
Authorities increasingly require robust biofouling management plans and detailed cleaning/coating records. Poor documentation may trigger inspections before entry.
🇯🇵 Japan
Growing documentation requirements
Ports are moving toward stricter verification of maintenance records, especially for vessels arriving from biofouling “high-risk” regions.
🇨🇦 Canada (British Columbia)
Risk-based checks
Applies extra scrutiny to vessels from high-risk regions or with long idle times. Modeled after U.S./Australia approaches; inspections favored over fines.
🇿🇦 South Africa
Developing enforcement
Primarily monitoring-focused at present, but authorities have indicated plans to tighten biofouling requirements in the coming years.
🇨🇱 Chile
Developing enforcement
Similar to South Africa, Chile is aligning with global biofouling best practices and is expected to expand inspection and documentation demands.
Note: While fines are not yet widely imposed in these regions, failure to meet biofouling expectations can result in operational delays, off-hire costs, and mandated cleaning orders. Requirements are evolving — verify specifics with local agents prior to arrival.
