Brazil’s New Biofouling Rules: What Ship Operators Need to Know

The rules for calling Brazil changed in 2025. Here’s what matters, what’s changed, and what to do before June 2026.

The Short Version

Brazil now requires vessels to arrive clean – not just managed. Under NORMAM-401, Chapter 4, any commercial vessel over 24 metres calling, anchoring, or conducting STS in Brazilian waters must demonstrate a hull with no macro-fouling, backed by high-resolution inspection evidence.

Penalties begin 10 June 2026. But vessels are already being exposed to delays and operational disruption if they arrive unprepared.

Who It Applies To

Any vessel ≥24 metres LOA that will anchor, berth, drift, or conduct STS in Brazilian Jurisdictional Waters (AJB).

If you run bulk, tank, or general cargo vessels with any Brazil rotation, this applies to your fleet.

The Key Dates (And Why There’s Confusion)

Many operators still have February 2026 in their heads from early circulars. That date was superseded, and June 2026 is the hard date.

Be aware that the “orientation phase” before June is not risk-free, however. Arriving without the right evidence pack can still mean delays, restricted operations, or being unable to proceed while you chase approvals as the enforcement of regulations is still not clearly defined.

What You Actually Need

Four things, in plain terms, to be prepared for Brazil’s biofouling regulations:

1. Biofouling Management Plan (BFMP): vessel-specific, must be onboard
2. Biofouling Record Book: current and actively maintained
3. Inspection evidence: high-resolution photos/video of hull and niche areas (sea chests, thrusters, rope guards), confirming fouling level ≤1. Brazil uses a 0–5 scale: Level 0 is a clean, bare hull; Level 1 is a slime film (microfouling); Level 2 and above means visible macrofouling (barnacles or worse). Level 1 is the maximum permitted for entry.
4.  If you need to clean on arrival: prior authorisation from port authorities, using a provider with approved capture and waste disposal

Inspection evidence is where most operators will be exposed. An inspection report loses its validity if the vessel has had significant idle time or prolonged slow-steaming after it was conducted – fouling accumulates fast in warm, productive waters. As a working rule: if more than four to six weeks have passed since the last inspection, or if the vessel has been at anchor for extended periods, factor a re-inspection into the pre-Brazil port call. The cost of an additional dive inspection is trivial compared to the cost of arriving with documentation that won’t hold up.

If You Arrive Fouled

Reactive in-water cleaning in Brazil is a regulated activity. You cannot simply arrange a dive team alongside.

To clean in Brazilian waters you need prior authorisation, an approved provider with biofouling capture technology, and a documented waste disposal chain. Getting all of that aligned during a port call window while cargo operations are waiting is where a hull condition problem becomes an off-hire problem.

Clean or inspect before you call Brazil. Don’t plan to fix it there.

Checklist: Brazil Port Call Readiness

This is how you prepare for compliance with Brazil’s new biofouling regulations.

Before the voyage
☐ BFMP and Biofouling Record Book onboard and current
☐ Biogeographic region transitions mapped across the full rotation
☐ Approved hull cleaning providers identified at relevant Brazilian ports (using local agents or an online platform like CleanQuote)

Pre-arrival
☐ Hull + niche area inspection completed at last port before Brazil
☐ Evidence confirms fouling ≤1, with recent timestamps
☐ No idle or slow steaming periods after latest inspection

If fouling risk exists
☐ Decision made: clean offshore before entry vs. authorised reactive hull cleaning in Brazilian waters
☐ Submission dossier ready: BFMP extracts, inspection media, AFS documentation, method statement

In Brazil
☐ Each inter-region move treated as a compliance checkpoint
☐ Re-inspection planned after prolonged anchor/berth stays
☐ All cleaning fully documented in the Record Book

The Bottom Line About Brazil Biofouling Regulations

Brazil’s biofouling regulations are manageable if you treat hull condition as a voyage planning discipline rather than a maintenance afterthought. Keep fouling low, keep documentation current, and don’t rely on fixing problems reactively inside a Brazilian port window.

The operators who will struggle after June 2026 aren’t the ones who didn’t know the rules. They’re the ones who knew, but didn’t build the systems to execute consistently.

How CleanQuote Helps

CleanQuote is built for exactly this kind of regulatory environment.

Your fleet’s underwater inspection history, cleaning records, idle periods, and fouling exposure data all live in one place; ready to pull as an evidence pack when you need it. Our global supplier network includes providers operating in Brazilian waters, so you’re not scrambling for a compliant hull cleaning vendor at the last minute.

If you’re building a Brazil compliance workflow into your voyage planning, get in touch and we can show you how other operators have set it up.