A bulk-carrier operator based in Canada signs a time-charter with a counterparty whose beneficial ownership traces, through several intermediate holding companies, to a person on an OFAC list. The vessel calls at a port where a transshipment hub is involved. The operator's compliance team asks two questions: are we blocked under US rules, and what does Canadian law require of us separately? The answers are not the same – and the gap between them can determine whether the charter proceeds, whether the financing bank withdraws, and whether a voluntary disclosure is needed in one or both jurisdictions.
As of January 2026, the United States and Canada both maintain maritime-oriented sanctions programmes, but the administering authorities, the legal bases, the ownership and control tests, the licence architecture, and the enforcement postures differ materially. Businesses operating vessels, chartering tonnage, providing ship finance, or handling cargo across these two regimes must map both sets of obligations before a transaction closes.
This analysis sets out the key divergences criterion by criterion, identifies the points of practical friction, and explains when a cross-border operation requires coordinated advice under both regimes simultaneously.
How the two regimes are constituted and who administers them
OFAC administers US economic sanctions under authority derived principally from the International Emergency Economic Powers Act and related executive orders, applying prohibitions to US persons, US-flagged vessels, and – through secondary-sanctions mechanisms – to non-US actors that engage with designated parties or sanctioned jurisdictions. The SDN List (OFAC's list of Specially Designated Nationals and blocked persons) is the primary designation tool. Maritime-specific guidance from OFAC addresses vessel registration, ship-to-ship transfers, and the use of automatic identification system manipulation as a red flag. The legal architecture is statutory and executive-order-based; guidance documents carry strong practical weight even where they are not formally binding.
Canada's autonomous sanctions are administered by Global Affairs Canada (GAC) under authority derived from the Special Economic Measures Act and the Justice for Victims of Corrupt Foreign Officials Act. GAC maintains its own consolidated list of designated persons. Unlike OFAC, GAC does not operate a separate secondary-sanctions mechanism of the breadth associated with OFAC's sectoral orders. Enforcement sits with the Royal Canadian Mounted Police and the Public Prosecution Service of Canada. The two regimes share a broad policy alignment at the designation level – particularly for listings that follow UN Security Council resolutions – but they diverge significantly in the mechanics of how they apply to maritime activity.
What does this mean in practice for a vessel operator? It means that a ship managed from Canada by a Canadian company may be simultaneously subject to OFAC's reach (if the vessel calls at a US port, uses a US correspondent bank, or touches US-dollar clearing) and to GAC's rules. Neither authority defers to the other. Where obligations conflict, the stricter prohibition governs within each jurisdiction separately.
Divergence on the ownership and control test for vessels and counterparties
OFAC applies the 50 percent rule (OFAC's rule treating entities owned 50 percent or more in the aggregate by one or more blocked persons as themselves blocked) mechanically and without reference to control. Aggregation across multiple blocked persons is required. A vessel-owning entity in which two SDN-listed shareholders hold, say, twenty-eight percent each is itself treated as blocked under that rule, even though neither shareholder alone triggers the threshold. The test asks only about ownership percentages; management arrangements, operational control, and day-to-day authority are irrelevant to whether the rule is met.
Canada's regime under GAC does not reproduce the 50 percent aggregation rule in identical form. The Canadian framework focuses on whether a person is themselves listed, and on whether transactions with or for the benefit of a listed person are prohibited. The concept of entity-level blocking through ownership aggregation – a cornerstone of OFAC practice – is less mechanically codified in Canadian sanctions law. This divergence matters most for ship-owning structures: a vessel-owning entity that is automatically blocked under OFAC's aggregation rule may not, on a strict reading of the Canadian instrument, be treated as prohibited under GAC's rules unless GAC has separately listed the entity.
The practical implication is that a Canadian operator's in-house screening tool calibrated primarily to GAC's list will miss OFAC-derived blocking of entities that have not been independently designated by GAC. We regularly advise Canadian shipping businesses that their screening programmes need a dual-track design: one track checking the GAC consolidated list, a second track running the same counterparty and its full ownership chain against the SDN List using OFAC's aggregation logic. Single-track screening against one list only is a structural gap in this sector.
How do the secondary-sanctions mechanisms differ – and why does that matter for shipping?
OFAC's secondary-sanctions architecture is the central asymmetry between the two regimes for non-US maritime operators. Secondary sanctions – measures that expose non-US persons to US penalties for conduct that occurs entirely outside the United States – are a distinct feature of several US sanctions programmes. They operate through a mechanism that does not require any US nexus in the underlying transaction beyond the operation of the measure itself. For a vessel flagged outside the United States, operated by a non-US manager, carrying non-US cargo between non-US ports, secondary-sanctions exposure can still arise if the activity falls within the scope of a relevant executive order targeting specific sectoral conduct.
Canada does not operate a secondary-sanctions mechanism of comparable reach. GAC's prohibitions bind Canadian persons, persons in Canada, and, in some instruments, Canadian-flagged vessels; they do not purport to reach the global conduct of non-Canadian actors in the way that OFAC's secondary measures do. This creates a material asymmetry for third-country shipping companies: a Greek-owned, Marshall Islands-flagged vessel chartered by a Canadian company may be entirely outside GAC's primary reach, yet squarely within OFAC's secondary-sanctions exposure if it carries cargo that meets OFAC's designated criteria.
The position above covers the standard case. Your facts – the flag state, the operator's nationality, the cargo type, the port sequence, the financing currency, and the counterparty structure – change the analysis materially.
For an assessment of your exposure under OFAC and Canadian sanctions simultaneously, contact Calder & Vance at info@caldervance.com.
Licensing architecture: specific licences, general licences, and Canadian permits compared
OFAC issues two categories of authorisation: general licences (standing authorisations that permit a defined category of transactions without a separate application) and specific licences (case-by-case authorisations to conduct an otherwise prohibited transaction). In the maritime context, OFAC has issued general licences in various programme-specific regulations permitting, among other things, certain vessel safety operations, overflight, emergency services, and – in some programmes – limited port services. The scope of each general licence is programme-specific and must be read against the precise programme under which the counterparty or vessel is designated. Specific licences are available for transactions that fall outside any applicable general licence; the application process involves a written submission to OFAC setting out the proposed transaction, the parties, and the policy basis for the authorisation.
Canada's equivalent mechanism is the ministerial permit issued under the relevant Special Economic Measures Act regulation. Permit applications are directed to the Minister of Foreign Affairs through GAC. The criteria and the turnaround expectations for Canadian permits differ from OFAC's process: the statutory basis, the evidentiary requirements, and the policy considerations that inform a Canadian permit decision are distinct from those that OFAC applies. A transaction that obtains an OFAC specific licence does not thereby obtain a Canadian permit, and vice versa. For a cross-border shipping transaction that requires authorisation under both regimes, the two licensing processes must run in parallel, coordinated but not merged.
In our experience, the sequencing of parallel licensing applications is a point where maritime operators make costly errors. Submitting to one authority and assuming the other will follow the outcome is not a sound approach. Each authority makes an independent decision on its own criteria, and the timelines do not track each other. A business that obtains an OFAC specific licence and then discovers that a Canadian permit has been refused – or is subject to conditions that the OFAC licence did not contemplate – may find itself with an authorised transaction under one regime that it cannot lawfully complete under the other.
Maritime-specific red flags: where the two regimes converge and where they diverge
Both OFAC and GAC treat certain maritime behaviours as red flags warranting enhanced scrutiny. The points of convergence include: counterparties that cannot produce vessel documentation; AIS (Automatic Identification System) manipulation or disabling; ship-to-ship transfers in international waters with no commercial explanation; cargo that does not match the vessel type or the declared routing; and beneficial ownership that is obscured through multiple layers of non-transparent holding structures.
OFAC has published detailed maritime-advisory guidance identifying these behaviours specifically, naming AIS manipulation as a sanctions-evasion indicator and directing operators, port authorities, and financial institutions to treat it as a due-diligence trigger. GAC's guidance on maritime red flags is less granular at the published level, though Canadian financial intelligence guidance from FINTRAC (Canada's financial intelligence unit) addresses maritime trade-based financial crime indicators in a broader anti-money-laundering context.
The practical divergence here is one of specificity. OFAC's published maritime advisories create a detailed, citable standard against which an operator's due-diligence procedures will be measured in any enforcement review. A Canadian operator that follows OFAC's advisory guidance on maritime red flags will likely meet or exceed GAC's own due-diligence expectations – but the converse is not reliably true. Calibrating due diligence to the more demanding of the two published standards is the prudent approach for a business with exposure to both regimes.
If a transaction has already been flagged, or a filing has been refused, an early review can preserve options that narrow with time. Contact Calder & Vance at info@caldervance.com.
Enforcement posture and the voluntary self-disclosure calculus under each regime
OFAC's enforcement posture in the maritime sector has been active: the authority has issued civil-penalty findings, engaged deferred-prosecution cooperation with financial institutions, and published detailed public guidance on the factors it considers in assessing whether a violation is egregious. The enforcement framework distinguishes between apparent violations that are voluntarily self-disclosed and those that are not, with a VSD (voluntary self-disclosure to a regulator) typically carrying a significant reduction in the base civil penalty. OFAC's published penalty framework also considers the existence of an effective sanctions compliance programme as a mitigating factor.
Canada's enforcement history in the sanctions space is less publicly documented than OFAC's. Criminal sanctions violations in Canada can attract significant penalties under the Special Economic Measures Act, but the volume of publicly reported enforcement actions is lower, and the penalty framework does not include a codified voluntary-disclosure reduction mechanism of the specificity that OFAC's does. This does not mean enforcement risk in Canada is negligible – it means the evidentiary base for calibrating that risk is more limited, and prudent advisers apply a conservative posture.
For cross-border operators, the VSD calculus is complicated by the dual-jurisdiction problem. A business that identifies a potential violation involving both OFAC and GAC obligations must decide whether to disclose to one authority, the other, or both – and in what sequence. Disclosure to OFAC does not constitute disclosure to GAC, and the standards for what information must be included in a disclosure differ between the two regimes. We have acted for businesses in this position and consistently advise that the decision on sequencing and content of any multi-jurisdiction disclosure requires legal advice tailored to the specific facts before any filing is made.
A side-by-side decision framework for cross-border maritime operators
For a compliance team or general counsel assessing a maritime transaction with both OFAC and Canadian sanctions exposure, the analysis should proceed through four sequential questions, each of which governs the next.
First: is any party to the transaction – the vessel owner, the operator, the charterer, the cargo owner, the port agent, or any intermediate holding company in the ownership chain – on the SDN List, or owned 50 percent or more in the aggregate by SDN-listed persons? If yes under OFAC's aggregation test, the transaction is blocked under US rules unless an applicable licence exists. The answer to this question under GAC's list may be different. Both must be checked independently.
Second: does the transaction involve any US nexus – US-dollar clearing, a US-flagged vessel, a US person in the chain, a US port call, or a US financial institution providing the letter of credit or ship finance? If yes, OFAC's primary prohibitions apply directly to those elements, regardless of the nationality of the vessel operator. Canadian nexus questions follow the same logic for GAC's primary prohibitions.
Third: does the transaction fall within the scope of any OFAC secondary-sanctions measure targeted at the relevant sector or jurisdiction? If yes, even a transaction with no US person and no US-flagged vessel may expose non-US parties – including Canadian operators – to US designation risk or to the loss of access to US financial markets. GAC does not operate an equivalent secondary mechanism, so this question is OFAC-specific.
Fourth: if a prohibition is identified, is there an applicable general licence or, if not, is a specific licence or Canadian permit application feasible and within the likely policy scope of either authority? The licensing route, the timeline, and the realistic prospect of success differ materially between OFAC and GAC, and both must be assessed before the transaction is structured.
Situation A – the counterparty is on the SDN List but not on the GAC list, and the transaction has a US-dollar financing element: the US prohibition is absolute absent a specific licence; the Canadian prohibition turns on whether GAC has separately designated the party or the transaction benefits a listed person under Canadian law. Dual advice is required. The US prohibition is the binding constraint.
Situation B – the counterparty is on both the SDN List and the GAC consolidated list, and there is no US person or US nexus beyond dollar clearing: both regimes are engaged; both licensing applications are needed; and the dollar-clearing constraint means the transaction cannot proceed until OFAC authorises it, regardless of the Canadian position. The more restrictive prohibition governs the viable timeline.
A common misconception: that compliance with one regime is sufficient for both
The most persistent myth we encounter in cross-border maritime practice is that a business which is compliant with OFAC is therefore compliant with Canadian sanctions obligations, or vice versa. The reasoning offered is usually that the two regimes are policy-aligned and that the major designations appear on both lists. This reasoning is wrong in two respects.
The first problem is the ownership and control divergence set out above. An entity blocked under OFAC's 50 percent aggregation rule may not be independently designated on the GAC list. A Canadian operator whose programme screens only against GAC's list will transact with that entity without a GAC violation while simultaneously incurring an OFAC violation if a US nexus exists. Conversely, a GAC-listed entity may not appear on the SDN List if Canada has made an autonomous designation that the US has not followed. Treating the two lists as interchangeable is structurally incorrect.
The second problem is the secondary-sanctions asymmetry. Even where both lists align perfectly, OFAC's secondary-sanctions reach extends to conduct that falls entirely outside GAC's jurisdictional scope. A Canadian company that concludes, correctly, that it has no GAC obligation in respect of a particular third-country maritime transaction may still find itself within OFAC's secondary-sanctions perimeter. The two assessments must be performed separately.
In our cross-border practice, we design screening and due-diligence programmes that run both regime tracks simultaneously, map the ownership chain to OFAC's aggregation standard as well as GAC's entity-level approach, and flag secondary-sanctions exposure as a distinct risk category. This is not duplication of effort; it is the minimum adequate approach for businesses with material exposure to both jurisdictions.
Related practices
- Correspondent banking and de-risking under OFAC – managing US sanctions exposure in financial institution and payment relationships
- OFAC vs OFSI: maritime and shipping sanctions analysis – a criterion-by-criterion comparison of the US and UK maritime regimes
- OFSI vs EU: maritime and shipping sanctions analysis – how the UK and EU regimes diverge for vessel operators and cargo interests