Businesses should assess sanctions and shipping disruption together, but not as the same risk: sanctions checks establish whether a transaction may proceed under the rules that apply, while continuity planning tests whether critical goods can still move if a route, port, carrier, or service is interrupted. Start by mapping parties, goods, routes, services, and payments; check applicable rules and investigate warning signs; then assess route vulnerabilities, plan responses, and keep the assessment current. The process below is a practical framework, not a legal determination for any particular company.
What should an integrated assessment answer?
A useful assessment gives decision-makers a traceable view of two related questions:
- Compliance: Are the parties, ownership and control relationships, goods, end use, services, routes, and payment arrangements permissible under the sanctions and trade-control rules that may apply?
- Continuity: If a critical supplier, carrier, port, corridor, insurer, payment service, or inland connection becomes unavailable, what happens to delivery, production, customer commitments, and recovery time?
Keep the two judgments distinct. A route disruption does not by itself establish a sanctions violation, and a transaction that passes a sanctions review may still depend on a fragile shipping link.
1. Establish which jurisdictions and activities are in scope
List the countries where the company and relevant group entities operate, where staff and counterparties are located, and where goods, services, financing, insurance, and payments pass. Identify which sanctions regimes and trade controls may reach the particular activity; do not treat one country’s rules as universal. The European Commission’s due-diligence guidance is focused on export-related sanctions, while UK guidance for non-UK businesses explains how UK-linked banks, suppliers, insurers, or shippers can create serious operational and commercial consequences when they cannot resolve sanctions concerns. Third-country laws may also regulate overlapping activity. See the European Commission due-diligence guidance and the UK government’s guidance for non-UK businesses.
For each material flow, record the relevant legal entities and their roles, the proposed transaction, and the possible jurisdictional connections. Where the applicable rules or their reach are uncertain, pause the decision for qualified legal or sanctions advice rather than assuming that a single screening result resolves the issue.
2. Map critical supply chains beyond direct suppliers
For each critical good or service, map both the commercial chain and the physical and financial paths. A tier-one supplier name alone will not show who ultimately owns or controls a party, who receives the goods, how the shipment travels, or which services enable it.
| Map this | Record or verify | Why it matters |
|---|---|---|
| Parties and relationships | Direct and indirect suppliers, customers, intermediaries, end users, beneficial owners, and controllers | Screening only the named contracting party can miss relevant ownership, control, or intermediary relationships. |
| Goods and use | Product description and classification, origin, destination, end use, and supporting documents | Restrictions and circumvention concerns can depend on what the goods are and who will use them. |
| Transport chain | Route, port calls, carrier, freight forwarder, inland links, warehouse, and relevant port actors | Each handoff can add a dependency, a delay point, or a visibility gap. |
| Enabling services and money | Insurers, financing or payment providers, payment path, and any changes to those arrangements | A shipment may be affected even when the vessel can sail if insurance, finance, or payment services are unavailable or unwilling to proceed. |
| Substitution and visibility | Inputs with few substitutes, single-port or corridor dependencies, available alternatives, and unknowns | Concentration and missing information help identify where to investigate or build contingencies first. |
Ports are connected systems, not isolated nodes: freight forwarders, carriers, shippers, customs, inland logistics, warehouses, and port actors all affect resilience. UN Trade and Development (UNCTAD) discusses this coordination in its guidebook for managing port risks and resilience.
3. Check sanctions exposure and investigate warning signs
Screen the parties and the underlying transaction
Check current official sanctions lists and relevant rules for the parties and other identifying details, then consider ownership and control rather than relying solely on a name match. Review the goods, end user, end use, route, services, and payment pattern as parts of the same transaction. UK government guidance describes screening and ownership-and-control considerations; the UK Office of Financial Sanctions Implementation (OFSI) also provides financial sanctions guidance for maritime shipping.
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For UK sanctions designations, OFSI says the UK Sanctions List became the sole source after the Consolidated List closed on 28 January 2026. Confirm the current official list and applicable rules when making a decision; a list check is not a substitute for the rest of the transaction analysis.
Treat red flags as prompts to investigate, not proof
Warning signs may include circuitous or commercially implausible routing, inconsistent end-use records, falsely declared origin or commodity codes, shell companies or opaque intermediaries, unusual trade patterns, goods that do not fit the buyer’s ordinary business, or unexplained last-minute changes to payment routing. Maritime-sector guidance from the UK and US describes indicators of concern, including the US Office of Foreign Assets Control’s maritime shipping compliance guidance.
No single indicator proves a breach or deliberate evasion. Ask for corroborating documents and a clear commercial explanation, verify the actual end user and relevant intermediaries, compare the declared goods and route with the transaction record, and document what was checked. Escalate unresolved inconsistencies to the responsible compliance or legal team and, where necessary, obtain specialist advice before proceeding.
4. Assess route, port, and transport-chain disruption
For each material flow, identify the ports, canals, straits, carriers, services, and inland connections it relies on. Consider hazards relevant to that dependency, including geopolitical conflict, sanctions restrictions, congestion, severe weather, infrastructure failure, labor disruption, or cyber incidents. UNCTAD’s port-risk method frames assessment around probability and severity and calls for considering consequences across the transport chain; see UNCTAD’s guide to assessing port vulnerability and potential impacts.
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Trace how an interruption could propagate: a port closure might require rerouting, which could affect transit time, vessel availability, inland connections, inventory, production, and customer delivery. For each plausible scenario, estimate the operational impact and the time, cost, and practical feasibility of switching to an alternative. Do not assume a nominally available alternate port or carrier is usable without checking capacity, service connections, contractual constraints, and sanctions exposure.
5. Prioritize risks without confusing a score with a decision
Use separate decision tracks. A sanctions concern is a compliance question that may require stopping, holding, escalating, or obtaining authorization under applicable rules; it should not be averaged away by a favorable continuity score. Shipping resilience can be prioritized by assessing likelihood and business impact, then considering how well the company can detect, control, or recover from the exposure.
A practical internal register can capture the following for each risk:
- Exposure: the affected party, good, route, service, or payment flow.
- Scenario: what could change or fail, and how disruption might propagate.
- Impact: consequences for compliance, supply, operations, customers, cost, and recovery.
- Control and visibility: what is verified, what remains unknown, and how quickly a change would be detected.
- Action owner: who must investigate, approve, monitor, or execute a contingency.
There is no universal risk-score threshold, probability cutoff, or stock buffer established for every business. Set scales and escalation tolerances using the company’s exposure, operating data, obligations, and ability to recover, and record the rationale for material decisions.
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6. Compare and select workable mitigation options
For each material exposure, compare feasible alternatives rather than assuming that the shortest route or lowest quoted freight cost is best. Use the same criteria for each candidate so that trade-offs are visible:
| Comparison criterion | Question to answer for each option |
|---|---|
| Sanctions permissibility and jurisdictional exposure | Can the parties, goods, services, route, and payment arrangement be verified as permissible under the rules that may apply? |
| Delivery time and reliability | What is expected under normal conditions, and how does the option perform in the disruption scenarios that matter? |
| Total cost | What are the combined freight, insurance, inventory, and switching costs? |
| Substitutability and concentration | Does the change reduce dependence on a single supplier, port, corridor, or service, or simply move the concentration elsewhere? |
| Visibility and verification | Can the company verify counterparties, goods, end use, and route throughout the transaction? |
| Recovery time and feasibility | How quickly can the option be put into operation, and what capacity, approvals, contracts, or operational changes are required? |
Possible actions include qualifying alternate suppliers, routes, ports, carriers, or transport modes; adjusting inventory decisions; improving shipment and counterparty visibility; and changing escalation or approval controls. Select measures the business can actually activate, not just alternatives that appear on a map or in a contract.
7. Prepare, respond, and recover
Before disruption
- Monitor relevant sanctions lists and rules, route and port status, carrier information, and material trade-pattern changes.
- Build scenarios around critical dependencies and confirm that proposed alternatives are operationally, commercially, and legally workable.
- Set named escalation owners, decision authority, communication contacts, and the information needed to switch or hold a flow.
During disruption
- Activate the relevant scenario and reassess the parties, route, service providers, and payment arrangements before changing a shipment.
- Coordinate decisions and communications with suppliers, logistics partners, customers, insurers, and relevant authorities as appropriate.
- Track affected shipments, delivery consequences, and decisions so that operational workarounds do not bypass compliance controls.
After disruption
- Restore critical flows in order of business need and monitor whether the chosen workaround creates new concentration or compliance exposure.
- Record delays, losses, costs, control issues, and what alternatives proved feasible.
- Update scenarios, supplier and route records, and response procedures based on actual outcomes.
UNCTAD groups resilience measures around actions before, during, and after disruption, and its 2024 maritime overview calls for monitoring, contingency planning, risk assessment, and proactive action. The overview quotes UN Trade and Development Secretary-General Rebeca Grynspan: “Building sustainable and resilient maritime transport and future-proofing global supply chains is not just an option – it’s a strategic necessity.” See the 2024 Review of Maritime Transport overview.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.8. Refresh the assessment and retain decision records
Set review triggers as well as routine review intervals. Revisit the assessment when sanctions rules or lists change; a counterparty, owner, or director changes; a product, service, route, or port call changes; transaction patterns become unusual; or a material disruption occurs. UK guidance recommends repeated due diligence, audits, staff training, and post-transaction review because sanctions rules can change rapidly.
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Retain records of screening and the identifiers checked, risk decisions and their rationale, investigation and escalation, licenses or exceptions relied on, control testing, and any post-transaction review. Assign owners for keeping the chain map and response contacts accurate; a plan that depends on stale counterparties or unavailable alternatives is not a reliable contingency.
What do recent maritime figures tell a business?
Global figures show why shipping resilience deserves attention, but they are context, not a forecast for a particular company’s lane, port, or shipment. UNCTAD’s 2025 Review of Maritime Transport reports that vessel ton-miles grew 5.9% in 2024, attributed to rerouting, and that Suez Canal tonnage by May 2025 was 70% below its 2023 level. It also reports that, from December 2023 to March 2024, average port waiting times rose 23% to 6.4 hours in developed economies and 7% to 10.9 hours in developing economies. The same review says rerouting increased delays, costs, and emissions and freight-rate conditions remained volatile. Those global or economy-group measures do not establish the likely delay or cost for an individual shipment. See UNCTAD’s 2025 maritime review.
UNCTAD’s 2024 overview says more than 80% of world trade volume is carried by sea. That global share explains the broad significance of maritime resilience; an individual company’s exposure still depends on its own goods, routes, dependencies, and alternatives.
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