Why Should Maritime Operators Screen Crew Against the OFAC SDN List? $356,579 Per Violation Is Why

Most US charter operators I talk to have never screened a single crew member against the OFAC SDN List. They've heard of OFAC, vaguely. They know "sanctions" are a thing. They assume it doesn't apply to a 6-pack out of Maalaea or a sport-fish operation out of San Diego.

The math says otherwise. The current civil penalty for an OFAC violation under the International Emergency Economic Powers Act (IEEPA) is $356,579 per violation, adjusted annually for inflation. It's strict liability — Treasury can fine you for an unintentional violation. And maritime sanctions enforcement is up roughly 40% since the 2022 Russia and Iran sanctions expansions, with the Office of Foreign Assets Control specifically targeting tanker operators, charter brokers, and small commercial fleets that touch international waters or international cargo.

If you've never run an OFAC screen on your crew or vessels, this is one of the highest-leverage 30-minute tasks in your compliance backlog.

Why this matters: $356,579 per violation, strict liability

The headline number comes from 31 CFR 501 and the Federal Civil Penalties Inflation Adjustment Act. As of 2024, the maximum IEEPA civil penalty per violation is $356,579 — and it ticks up every year.

Three things make this a real risk for small maritime operators:

1. Strict liability. You don't have to know your crew member is sanctioned. You don't have to intend to violate. You just have to do it. "I didn't know" is not a defense — it's at most a mitigating factor that might reduce the penalty.

1. "Per violation" can compound. Each voyage where you employed a sanctioned person is potentially a separate violation. Each port call. Each charter. A single missed screen can produce a half-dozen counts.

1. Civil + criminal exposure. Civil penalties are administrative, settled with Treasury. Criminal penalties — up to $1M and 20 years per violation — apply to willful violations, but Treasury sometimes refers cases to DOJ when the pattern looks like deliberate evasion.

Treasury's Office of Foreign Assets Control publishes enforcement actions. Pattern-matching the recent maritime cases will give you a cold sweat.

What you actually have to screen

OFAC publishes several lists. The one most operators care about is the Specially Designated Nationals and Blocked Persons List (SDN List). Three other lists matter for maritime:

• Sectoral Sanctions Identifications (SSI) List — entities with restricted but not fully prohibited dealings (lots of Russian energy)
• Foreign Sanctions Evaders (FSE) List — entities sanctioned for helping others evade sanctions
• Non-SDN Menu-Based Sanctions (NS-MBS) List — newer, more granular

You're screening for matches on three categories of person/thing:

Crew names

Every new hire. Every contractor. Every officer transfer. Match against full names, aliases, dates of birth, nationalities, and known passport/document numbers. The SDN List provides all of this in CSV format.

Vessels by name and IMO number

Every vessel you charter, manage, or acquire. The SDN List includes specially-designated vessels with full IMO numbers, flag, and tonnage. The 2022 Russia "specially-designated tankers" expansion alone added hundreds of vessels.

Charterers, agents, and customers

Every charter party. Every shipping agent. Every cargo customer. Especially relevant if you do international freight, but also matters domestically — there are SDN-listed individuals and entities with US addresses.

When to screen

Build screening into your operational workflow at these moments:

• Crew onboarding — before the first paycheck, before the I-9 is signed
• Vessel acquisition — before purchase, definitely before flagging or registering
• Charter party signing — before any new charterer, especially international
• Agent appointment — before contracting with a foreign port agent
• Cargo customer onboarding — before accepting cargo from a new customer
• Periodic re-screening — every 30 days for active personnel, every 90 days for vessels and counterparties (sanctions lists update weekly)

That last bullet is the one most operators miss. SDN List changes are published continuously — sometimes multiple updates per week. A clean screen on day 1 means nothing if you don't re-run it.

Free OFAC tools — and their limits

Treasury provides free screening tools. They are minimal, manual, and not appropriate for any operation with more than a handful of people or vessels.

sanctionssearch.ofac.treas.gov

The official OFAC Sanctions List Search takes a name and returns possible matches. It's free, it's authoritative, and it's manual — you type one name at a time and read the results.

Fuzzy-match scoring is built in (it'll suggest "Vladimir Petrov" might match "Vladimir Petrof"), but the threshold is conservative and you'll get false positives.

SDN List CSV download

Treasury publishes the SDN List in CSV and XML formats, updated as often as Treasury makes changes (sometimes daily). You can ingest it into your own systems if you have a developer.

Federal Register notices

When Treasury adds someone to the list, it publishes a Federal Register notice. Subscribing to those notices via federalregister.gov is free, but the volume is massive. Most operators ignore this and rely on the CSV.

Common gotchas

1. "It won't happen to me." Treasury enforcement is up roughly 40% since 2022. Maritime is on their list. Tanker operators, charter brokers, and any operation that touches international cargo are particular targets. Small size is not protection.

2. Screening only on day 1. Sanctions lists update weekly. A captain you screened clean two years ago could have been added to the SDN List last Tuesday. If you don't re-screen periodically, you're flying blind.

3. Name matching is hard. Common Filipino names overlap. Common Spanish, Russian, and Arabic names overlap. The SDN List has thousands of entries; matching against it requires fuzzy logic (Levenshtein distance, token-set ratio) and you will get false positives. The right answer is to flag potential matches for human review, not to ignore them.

4. The "50% rule." This is the trap that catches sophisticated operators. Per OFAC's 50 Percent Rule guidance, an entity owned 50% or more by one or more SDN-listed persons is itself sanctioned — even if it's not explicitly on the list. Screening just for the entity name misses this. You need to screen for ultimate beneficial owners.

5. Charter party clauses. Modern charter party agreements should include sanctions warranties — clauses where the counterparty represents they're not sanctioned and agree to indemnify if a sanctions issue arises. If your CP boilerplate is from 2015, it's missing this. Update it.

What to do if a possible match comes up

You ran a screen. The system flagged a potential match. Now what?

1. Stop. Do not proceed with hire, booking, or contract until the match is resolved. This is the entire point of the screen.

1. Document the encounter. Date, time, name screened, list version, match score, who reviewed it. This becomes your audit trail if Treasury asks.

1. Run additional verification. Date of birth, nationality, passport number, last known address — all SDN entries include these. If your candidate's DOB is 1985 and the SDN entry is 1962, it's not the same person.

1. Call the OFAC Compliance Hotline at 1-800-540-6322 if you're genuinely unsure. They'll give guidance.

1. Engage maritime/sanctions counsel if the match is plausible. A few hundred dollars of legal time is worth it before a hiring decision that could trigger a $356k penalty.

1. If you decide to proceed because the match was a false positive, document the reasoning in writing and keep it in the personnel/vessel file.

What Binnacle does

OFAC screening is built into Binnacle AI for every crew member and every vessel:

• Weekly-synced SDN list. We pull the Treasury CSV every week (and on Federal Register triggers) and update our matching index. You don't have to do anything.
• Fuzzy-match scoring. Levenshtein distance + token-set ratio + DOB and nationality cross-checks. Confidence score 0-100.
• Admin review workflow. Possible matches surface at /admin/ofac-matches for human review. Approve, reject, or escalate. Every decision is logged with reviewer, timestamp, and rationale.
• Re-screening on schedule. Crew members are re-screened every 30 days, vessels every 90 days, automatically.
• Audit-ready exports. PDF or CSV of all screens run, all matches reviewed, all decisions made — ready to hand to outside counsel or Treasury if asked.
• 50% rule prompts. When you onboard a new charterer or customer, we prompt you to capture beneficial ownership data so the screen can include it.

This is a feature where the value is mostly invisible until something happens. You'll never get a "we just stopped you from hiring an SDN" celebration email — what you'll get is an absence of the kind of phone call that ends a business.

A real example

A West Coast charter outfit — sport fish, 6-pack license, three boats — hired a foreign-flagged tugboat captain with a partial name match to a SDN-listed vessel master. They didn't run an OFAC screen because they didn't know they were supposed to. The captain ran two voyages before he transferred to another company.

The captain turned out to be a different person. Lucky.

If it had been the same person, the operator faced two voyages × $356,579 = $713,158 in potential civil penalties before any negotiation. That would have ended a small charter business.

The screen would have taken 30 seconds.

Start here

Two next steps depending on your operation:

If you've never run an OFAC screen

Tonight. Right now. Pick your three most-recent hires and run them through sanctionssearch.ofac.treas.gov. It's free, it's manual, and it will surface the most obvious problems in 5 minutes.

If you have more than ten people in your organization, you need an automated solution. Binnacle handles this; so do dedicated sanctions tools like Refinitiv World-Check or Dow Jones Risk & Compliance (those run $5-15k/year for small ops).

If you're not sure whether OFAC screening even applies to your operation

Run the Binnacle AI free compliance calculator. It will tell you whether OFAC screening is required for your operation type, alongside the rest of your federal 46 CFR obligations:

[Try the free compliance calculator →](/compliance-calculator)

It takes under two minutes, no login, and produces a starting checklist with real CFR citations and OFAC obligations called out where they apply.

If you'd rather see a side-by-side of what OFAC screening looks like inside a working compliance tool, the Binnacle docs walk through the screening workflow with screenshots.

The one outcome you cannot afford is a Treasury letter on a Tuesday morning saying "we noticed you employed an individual on our SDN List." Don't be that operator.

Capt J is the founder of Binnacle AI. He runs a small maritime tech company on Oʻahu that builds compliance tools for commercial fleets. None of this article is legal advice — consult a qualified maritime attorney or sanctions counsel for specific regulatory questions.