Shipping cyber risk is easy to describe broadly and difficult to own operationally. “Ransomware”, “GPS spoofing” and “supplier compromise” are threat labels. A risk register needs to show what could happen to a specific operation, who owns the exposure and what evidence proves the control works.
IMO’s revised Guidelines on Maritime Cyber Risk Management provide a current international reference for managing cyber risk across maritime systems. The practical leadership task is to translate that guidance into vessel, shore and supplier scenarios.
Write risks as scenarios
Use the form: cause → event → operational consequence.
Instead of “ransomware risk”, write: “A compromised shore credential allows ransomware to disrupt voyage-planning and document systems, delaying departures and forcing manual fallback.”
That wording immediately improves control design.
The Certified Maritime Risk Management Professional develops the broader capability to structure and assess maritime operational risks.
Include six risk families
- Vessel operational technology: propulsion, machinery monitoring, cargo systems and integrated control.
- Navigation and positioning: GNSS, ECDIS inputs, AIS-related dependencies and integrity of navigational data.
- Shore systems: identity, email, fleet management, planning and business applications.
- Vessel–shore connectivity: remote access, satellite links and data exchange.
- Supply chain: vendors, service engineers, software updates and managed services.
- AI and automation: new model, agent and autonomous-function dependencies where deployed.
For the last category, the Certified AI Cyber Risk Assessor adds specialist AI risk capability.
Give every risk six fields
Record asset/function, initiating cause, operational consequence, preventive control, recovery control and accountable owner. Add evidence and review date.
Avoid scoring before the scenario is clear. A red number with a vague description creates false precision.
Test recovery, not only prevention
Assume a digital system becomes unavailable or untrusted. Can the vessel or shore team continue safely? Which manual or isolated capability remains? How long can the fallback operate?
Recovery exercises often reveal dependency chains that a vulnerability scan cannot see.
Connect governance to operations
Boards need aggregated cyber risk, but owners need specific thresholds and actions. The Certified Maritime Governance Professional supports the link between oversight and operational accountability.
Set escalation triggers for loss of critical capability, repeated control failure, supplier changes and incidents that cross vessel/shore boundaries.
Example register entry
Scenario: A third-party remote-maintenance account is compromised and used to alter a vessel system configuration.
Consequence: unsafe or unavailable equipment, voyage disruption and loss of confidence in system integrity.
Prevention: time-limited privileged access, MFA, approved maintenance windows, segmentation and supplier assurance.
Recovery: isolate access, restore known-good configuration, verify equipment and preserve logs.
Owner: named technical/operational executive, with vessel and cyber responsibilities defined.
Add evidence to every control
A control description such as “MFA enabled” is not the same as assurance. Add an evidence field: access review, configuration extract, drill record, restore test, supplier report or vessel inspection result. State how recent the evidence must be.
This turns the register from an opinion about risk into a management record that can be challenged. It also exposes controls that exist on paper but have never been tested under operational conditions.
Review risk at operational change points
Annual review is too slow when vessels receive software upgrades, new connectivity, remote support or autonomous functions. Trigger a review after a material system change, new supplier connection, cyber incident, major maintenance period or new vessel/shore integration.
For maritime AI programmes, the AI in Maritime: What Leaders Must Know course can help leadership understand how autonomy and AI alter existing operational dependencies rather than creating an entirely separate risk universe.
Run one cross-boundary exercise
Choose a scenario that crosses organisations: a vendor credential compromise during a port call, for example. Include vessel, shore, IT/security, technical management and the supplier. Test who notices, who can isolate access, how the vessel maintains a safe state and who communicates externally.
The exercise should end with named corrective actions and dates, not a general statement that “communication needs improvement”.
Final takeaway
A maritime cyber risk register becomes useful when threats are translated into operational scenarios with named owners, evidence and tested recovery.
Shipping is a connected system of vessel, shore, port and supplier dependencies. Cyber governance should follow those operational connections rather than remain an IT-only list.
Responses