A bulk carrier transiting a Canadian port discharges its cargo and moves on. Three days later, the operator's compliance team discovers that the vessel's registered owner traces back to a person on Canada's autonomous sanctions list. The transaction is complete. The exposure is live. What happens next – and how much worse could it have become with a different set of facts?
Canada's maritime and shipping sanctions regime operates under the Special Economic Measures Act ("SEMA") and the Justice for Victims of Corrupt Foreign Officials Act, administered by Global Affairs Canada ("GAC"). The regime prohibits Canadian persons and entities from dealing with listed persons, and those prohibitions extend to vessel ownership, chartering, flag registration, port access, and financing. As of January 2026, the prohibitions apply on an extraterritorial basis to Canadian persons operating abroad, and they interact directly with OFAC, OFSI, and EU maritime controls.
This guide walks through the regime step by step – who is caught, what is prohibited, how to run a compliant diligence process, and when Canadian sanctions diverge critically from the positions taken by allied regimes.
Step 1: Understand who and what Canadian maritime sanctions cover
Canadian maritime sanctions under SEMA bind any "Canadian" – a broad category that includes Canadian citizens wherever they are located, permanent residents, incorporated entities with a registered office in Canada, and persons physically present in Canada. This reach matters for shipping: a Canadian resident who manages chartering operations from a foreign city is still caught. So is a Canadian-incorporated freight forwarder acting as agent for a foreign principal.
The prohibitions cover a wide range of maritime activity. Dealing in property of a listed person is prohibited, and "property" in the shipping context encompasses vessel ownership interests, cargo, freight receivables, bunker payments, and port dues. Rendering services to a listed person – including crewing, insurance, classification, and ship management – is separately prohibited. Providing financial services that benefit a listed person, such as arranging trade finance or issuing a letter of credit for a voyage, is caught on the same basis.
Port access is a distinct pressure point. Canadian ports are administered at federal and provincial level. A vessel that is owned by, or is carrying cargo for the account of, a listed person may be denied port clearance or detained. In practice, the port authority acts on guidance from GAC. A compliance failure that permits a listed-person vessel to call at a Canadian port can expose the port agent, the charterer, and the cargo owner simultaneously.
One question practitioners often face is whether the prohibition extends to non-Canadian sub-contractors in a supply chain where the primary contractor is Canadian. The short answer is yes – the primary contractor, being Canadian, cannot arrange services through a sub-contractor if the end beneficiary is a listed person, regardless of the sub-contractor's nationality. We regularly advise on exactly this kind of indirect exposure, which screening tools focused only on direct counterparties routinely miss.
Step 2: Identify the applicable lists and screening obligations
GAC maintains the Consolidated Canadian Autonomous Sanctions List, which is the primary screening reference for maritime operators. It consolidates listings made under SEMA's country-specific regulations, which cover a range of designated states, as well as the Magnitsky-style listings under the Justice for Victims of Corrupt Foreign Officials Act. The list is updated on an irregular basis without advance notice, and historical versions are not always archived in a way that makes point-in-time verification straightforward.
Screening in a maritime context requires a broader target set than in a simple goods-trade transaction. For a single voyage, a compliance officer should check:
- The registered owner of the vessel.
- The beneficial owner or owning trust, if different from the registered owner.
- The commercial manager and the technical manager, where they differ from the owner.
- The charterer – both voyage charterer and, if applicable, time charterer.
- The shipper and the consignee named in the bill of lading.
- The notify party and any intermediate traders.
- The flag state – not itself a legal person, but an indicator of opacity risk.
- The vessel's classification society, insurer, and P&I Club, where those details affect GAC guidance on services.
The Consolidated Canadian Autonomous Sanctions List should be checked against each of those parties. A match at any layer triggers a hold on the transaction until the position is clarified. Screening that stops at the shipper and consignee is, in our experience, the single most common source of undetected maritime sanctions exposure for Canadian operators.
In parallel, operators should cross-reference the UN Security Council Consolidated List. Canada implements UN Security Council measures through separate legislation, and UN-listed persons will ordinarily also appear on Canadian lists – but the timing of domestic implementation can create a gap. Checking both lists closes that gap.
Step 3: Apply the ownership and control test
SEMA does not adopt a purely mechanical ownership percentage in the way OFAC's 50 percent rule does. The Canadian test turns on whether a person is listed, and whether a Canadian person is dealing in the property of, or providing services to, that listed person. The question of whether an entity is effectively controlled by a listed person – and therefore whether its property is indirectly the property of that listed person – is a matter of legal analysis rather than a bright-line threshold.
That said, GAC guidance treats entities owned or controlled by listed persons as being caught by the same prohibitions. In practice, compliance teams often apply a working threshold analogous to the 50 percent or more rule used under OFAC, because it is a defensible and conservative analytical starting point. Where a listed person holds a significant minority stake and exercises operational control through board representation or contractual rights, a well-advised operator will treat that as caught and seek confirmation from GAC or legal counsel before proceeding.
The divergence between the Canadian and OFAC positions is most acute in two scenarios. First, where a listed person holds a minority interest in a vessel-owning entity. Under OFAC, a sub-50-percent stake does not automatically trigger the 50 percent rule (absent a control finding), but under Canadian analysis the control question remains open. Second, where a listed person has recently divested, but the sale is to a connected party: GAC has shown willingness to look through transactions designed to shift legal ownership while leaving effective control in place.
Under OFSI in the United Kingdom, the ownership and control test explicitly captures both ownership at any percentage and practical control through any means. EU regulations take a similarly broad approach. Canadian law sits between the OFAC mechanical rule and the OFSI/EU functional approach – closer to the functional end. That means the same transaction can be analysed very differently across regimes, and the stricter prohibition governs for any Canadian person who also has connections to US, UK, or EU regulators.
Step 4: Assess flag, port, and cargo risk factors
Vessel flags and ports of call carry independent risk significance in a Canadian maritime sanctions analysis. A vessel registered in an open-registry jurisdiction with limited transparency around beneficial ownership requires deeper diligence, because the registered owner may not be the party that actually controls the commercial operation. GAC expects Canadian persons to take reasonable steps to verify beneficial ownership; "we only had the registered name" is unlikely to constitute an adequate defence in a well-documented enforcement matter.
Port risk is a two-way issue. A Canadian port can deny entry to a vessel associated with a designated person. Conversely, if a Canadian freight forwarder or ship agent facilitates a call at a third-country port by a vessel associated with a designated person, that Canadian party faces exposure even though the port is outside Canada. The prohibition turns on the Canadian person's involvement in the services, not on where the vessel is located.
Cargo analysis is similarly not limited to the named shipper and consignee. Sanctions-sensitive commodities – crude oil, refined petroleum products, certain metals and minerals, arms and dual-use items – attract heightened scrutiny. A Canadian person providing financing or logistics services for a cargo voyage involving these commodities should, as a matter of standard practice, satisfy itself that neither the underlying cargo seller nor the end buyer appears on a relevant list. What is the origin and destination of the cargo, and who economically benefits from the transaction? These are the two questions that shape the risk picture most directly.
The position above covers the standard diligence cycle. Your specific facts – the vessel, the commodity, the counterparties, and the financing structure – change the analysis. For a cross-border transaction review or a vessel-specific exposure assessment, contact Calder & Vance at info@caldervance.com.
Step 5: Manage insurance, financing, and services restrictions
The prohibition on providing services to a listed person has direct implications for the shipping-services ecosystem. Marine insurers writing Canadian-connected risks must confirm that the insured, the vessel owner, and the operator do not include listed persons. P&I Clubs that are underwriting on a call basis for a vessel subsequently found to be associated with a listed person face the question of whether paying a claim would constitute a prohibited dealing. Classification societies and ship management companies based in Canada or with Canadian personnel involved in the service face the same analysis.
Trade finance is a further pressure point. A Canadian bank providing a letter of credit or a standby credit for a maritime transaction must screen all parties named in the transaction documents, as well as the vessel. A mismatch between the documentary parties and the economic beneficiaries – for example, where a trading company interposes itself between a buyer and a listed seller – is a recognised evasion pattern that responsible compliance programmes are expected to detect and escalate. Calder & Vance does not advise on constructing such arrangements; we advise on detecting and managing them.
Bunker supply is a discrete risk area. A Canadian company supplying fuel to a vessel at a foreign port provides a "service" within the meaning of SEMA. If the vessel is controlled by a listed person, the bunker supply is prohibited. The fact that payment flows through a non-Canadian sub-agent does not remove the exposure for the Canadian originator of the supply arrangement.
If a transaction has already been flagged or a compliance hold has been raised, an early legal review preserves options that narrow with time. GAC has a licensing function that allows Canadian persons to seek an authorisation for an otherwise prohibited activity. That route requires a formal application and does not guarantee a result, but it is available, and the window to use it is narrowest when the transaction is already in progress. Contact Calder & Vance at info@caldervance.com for a confidential review.
Step 6: Understand the cross-border dimension – OFAC, OFSI, and EU divergences
For a Canadian shipping operator with US dollar-denominated freight receivables, US-incorporated subsidiaries, or US-citizen directors, OFAC's maritime sanctions regime runs in parallel to SEMA. OFAC's extraterritorial reach means that a transaction that involves US persons, US-dollar clearing, or US-origin goods is caught by OFAC even if the principal parties are non-American. A Canadian operator that clears freight payments in US dollars through a correspondent bank is, in practical terms, subject to OFAC scrutiny on every such transaction.
The secondary-sanctions dimension is also relevant. OFAC's secondary-sanctions programmes – which target non-US persons who engage in specified activities with designated parties – can affect Canadian shipping companies that have no direct US nexus beyond dollar clearing. The risk of losing access to the US financial system is a material deterrent, and Canadian operators should assess secondary-sanctions exposure as part of any transaction that touches a high-risk regime.
Under OFSI in the United Kingdom, the maritime-sanctions regime shares a similar services-and-property architecture to SEMA, but the ownership and control test is explicitly broader. UK-flagged vessels, UK-incorporated ship-management companies, and UK-based marine insurers are all subject to OFSI's prohibitions. A transaction that involves both a Canadian party and a UK party requires compliance with both regimes simultaneously; the stricter prohibition governs at each point of analysis.
The EU's maritime sanctions regime under the relevant Council regulations includes a prohibition on access to EU ports for certain vessels, as well as restrictions on ship-to-ship transfers and on the provision of EU-based maritime services to designated parties. Canadian operators whose cargo transits EU ports, or who use EU-based P&I cover, must assess EU compliance alongside Canadian obligations. We advise on exactly this kind of multi-regime analysis. In our cross-border practice, we regularly see matters where a transaction is assessed in isolation under one regime but creates unmanaged exposure under another.
For a detailed comparison of the maritime-shipping regimes across the major jurisdictions, see our guide at Maritime Shipping Sanctions: Cross-Border Guide, and for the EU-specific position see Maritime and Shipping Sanctions under the EU.
Step 7: Common risk flags and when to involve counsel
Certain patterns in maritime transactions are well-recognised indicators of elevated sanctions risk, and a Canadian compliance function should treat any of the following as requiring escalation before proceeding.
- Vessel identity anomalies: frequent name or flag changes, AIS signal gaps or manipulation, or a vessel that has recently left a designated port without a declared cargo.
- Ownership opacity: a registered owner in an open-registry jurisdiction with no publicly identifiable beneficial owner, or a chain of holding companies that terminates in a trust or nominee arrangement.
- Counterparty substitution: a last-minute change of shipper, consignee, or paying party shortly before sailing, particularly where the replacement party is less well-known.
- Commodity mismatches: a declared cargo that is inconsistent with the vessel type, the voyage route, or the declared origin and destination.
- Payment routing anomalies: payment instructions that route through third-country intermediaries, or requests to pay in a currency that departs from market norms for the commodity.
- Requests to omit or alter documentation: pressure to leave fields blank on bills of lading, to omit the vessel name from correspondence, or to describe cargo in generic terms.
Any one of these flags, on its own, may have an innocent explanation. Two or more together, in our experience, warrant a formal compliance hold and a legal review before the transaction proceeds. The cost of an early review is a fraction of the cost of managing an enforcement matter or an asset freeze.
A common misconception among Canadian shipping operators is that the prohibitions only apply to transactions with a visible Canadian nexus – a Canadian port, a Canadian bank, or a Canadian company as principal. That reading is incorrect. SEMA binds Canadian persons wherever they operate, and GAC has taken the position that a Canadian person who is a minority participant in a deal – as a broker, a sub-agent, or a funder – is not exempt simply because the primary commercial parties are foreign. If you are Canadian, SEMA applies to you regardless of where the transaction is booked.
When should counsel be involved? At minimum: before a transaction proceeds where a screening alert has been raised and cannot be immediately resolved; whenever a vessel, owner, or counterparty has a connection to a high-risk jurisdiction; when a GAC licence application is contemplated; and immediately upon receiving a compliance inquiry or a voluntary disclosure request from any regulator.
Related practices
- Correspondent banking and de-risking under OFAC – managing the OFAC exposure where US dollar transactions are in play
- Maritime shipping sanctions: cross-border guide – regime-by-regime comparison for multi-jurisdiction shipping transactions