The ship track everyone sees
Thousands of uneventful transits may demonstrate professional competence and operational reliability. They do not necessarily demonstrate that catastrophic exposure has been identified or adequately governed.
Catastrophic exposure governance for maritime infrastructure
Govern catastrophic exposure before failure reveals it.
HarborArc helps ports, infrastructure owners, insurers and maritime leaders examine how foreseeable operational failure can interact with physical and operational systems to produce unacceptable outcomes — before an accident reveals the exposure.
Consequence-first governance
Exposure assessment
Governance intelligence
Executive briefings
The governance gap
Preventing operational failure and governing catastrophic exposure are different — but complementary — tasks.
The same operational failure can have radically different consequences depending on where it occurs. A blackout in open water may result in delay and towage assistance; beneath a major bridge, alongside a fuel terminal or within a constrained approach channel, the same failure may open a pathway to catastrophic consequence.
01 — Failure
Operational failure remains foreseeable
Competence, procedures, engineering reliability and compliance reduce the occurrence of failure, but no credible governance framework can assume operational failure will be eliminated altogether.
02 — Context
Consequence is shaped by context
Physical configuration, operational context and the presence of consequence multipliers shape what a foreseeable operational failure is capable of becoming.
03 — Governance
Catastrophic exposure is a governance question
The objective is to make unacceptable outcomes, consequence multipliers and the conditions governing escalation explicit enough for leadership to decide whether the exposure is legitimate, recoverable and survivable.
The HarborArc framework
A consequence-first framework for governing catastrophic exposure.
The HarborArc framework begins by defining which outcomes are unacceptable. It then identifies the consequence multipliers capable of producing those outcomes and examines catastrophic exposure through three complementary governance functions: exposure legitimacy, recoverability and survivability.
1. Define unacceptable outcomes
Define the losses the system must ultimately protect against: loss of life, critical infrastructure failure, environmental harm, economic disruption or other outcomes judged unacceptable by the responsible organisation.
2. Identify consequence multipliers
Identify the physical features whose interaction with a vessel could transform a foreseeable operational failure into one or more defined unacceptable losses — for example bridges, fuel terminals, LNG facilities, environmentally sensitive areas, coastlines or confined waterways.
3. Test exposure legitimacy
Ask whether the operational practice creating the catastrophic exposure is appropriate in its present form, or whether the exposure should be reduced, constrained, redesigned or consciously accepted.
4. Test recoverability
If operational failure occurs, examine whether control can be regained before irreversible interaction with the identified consequence multiplier occurs.
5. Test survivability
If interaction with the consequence multiplier becomes unavoidable, examine whether structural resilience, protective systems, emergency response and other safeguards are sufficient to prevent the defined unacceptable outcomes.
Governance sequence
Operational failure may reveal catastrophic exposure that was already present.
Unacceptable outcomeswhat the system must protect against
↓
Consequence multiplierswhich physical features could produce those losses
↓
Exposure legitimacyis the operational practice creating the exposure appropriate?
↓
Recoverabilityif failure occurs, can control be regained before interaction?
↓
Survivabilityif interaction occurs, can unacceptable outcomes still be avoided?
See what normal operations can hide
Repeated operational success demonstrates reliability. It does not demonstrate the absence of catastrophic exposure.
The ship track no one sees
A catastrophic-exposure view asks what physical and operational conditions are already present, which consequence multiplier could be involved, and whether recovery or survivability remains if prevention is unsuccessful.
Engage HarborArc
Apply the framework to a real system.
HarborArc does not replace navigation simulation, engineering analysis, formal risk assessment, regulation or professional judgement. It provides a consequence-first governance lens intended to identify where those disciplines may need to be directed, integrated or challenged by the potential for unacceptable loss.
Pilot assessment
Catastrophic Exposure Assessment
A bounded application of the HarborArc catastrophic-exposure framework to one port system, asset or vessel–infrastructure interaction.
- Defined unacceptable outcomes and consequence multipliers
- Exposure pathways and operational context
- Exposure legitimacy, recoverability and survivability review
- Governance findings and evidence gaps
- Executive findings and priority next steps
Best for: organisations that want to test whether a consequence-first review reveals material exposure, governance questions or evidence gaps not already made sufficiently visible by existing processes.
Discuss a pilot assessmentExecutive / board
Catastrophic Exposure Briefing
A focused leadership session examining catastrophic exposure as a distinct governance problem that complements the prevention of operational failure.
- Prevention versus catastrophic-exposure governance
- Unacceptable outcomes and consequence multipliers
- Exposure legitimacy, recoverability and survivability
- Decision prompts for deeper analysis, protection, constraint or acceptance
Best for: boards, executive teams, insurers, port authorities and infrastructure owners.
Request a briefingSpeaking
Blind Spots Born of Skill
How repeated successful operation and professional competence can coexist with catastrophic exposure that remains unrevealed.
- Maritime, pilotage, port and infrastructure conferences
- Insurance and governance audiences
- Adaptable for executive leadership sessions
- Grounded in real maritime casualties and system geometry
Purpose: create a sharper shared language for the exposure that ordinary safety metrics may not show.
Enquire about speakingPublished and presented
The HarborArc proposition is published; the assessment approach remains subject to testing and refinement.
The central HarborArc proposition has been published in Seaways: catastrophic exposure may exist independently of the failure that eventually reveals it and, if so, can be identified, characterised and governed before an accident occurs. HarborArc does not present this as a replacement for established risk, resilience or engineering disciplines; the assessment approach must earn its value through application.
The Nautical Institute · Seaways · August 2026
Governing catastrophic exposure
“A new approach to identifying and managing consequence multipliers.” The article sets out the case for treating catastrophic exposure as a distinct object of governance alongside — not instead of — the prevention of operational failure.
AMPI Regional Ports & Pilotage Conference · Darwin · June 2026
Blind Spots Born of Skill
The conference presentation examined how competence, familiarity and successful history can coexist with exposure embedded in the geometry of a system.
Current development
From framework to application
The next stage is structured application against live port systems: test whether the framework identifies material exposure or governance questions beyond existing processes, challenge its assumptions, and refine the assessment method from evidence.
For leadership teams
The governance questions HarborArc is designed to make explicit.
What outcomes are unacceptable?
Begin with the losses the system must protect against rather than beginning only with a list of initiating hazards.
Which consequence multipliers could produce them?
Identify the physical features whose interaction with a vessel could transform a foreseeable operational failure into the defined unacceptable outcomes.
Is the exposure legitimate?
Ask whether the operational practice creating the exposure is appropriate given the magnitude and nature of the consequences at stake.
If failure occurs, can control be regained?
Examine whether there is sufficient time, sea room, vessel capability and operational support to prevent irreversible interaction with the consequence multiplier.
If interaction occurs, can unacceptable loss still be avoided?
Examine whether structural resilience, protective systems, emergency response and other safeguards are sufficient to interrupt escalation.
What decision and evidence follow?
Direct simulation, engineering, operational review, capital protection or formal acceptance to the governance level appropriate to the exposure identified.
Founder
Operational maritime experience applied to catastrophic-exposure governance.
HarborArc was founded by Andrew Baker AFNI, a marine pilot and maritime professional working at the interface between ship handling, port systems and catastrophic consequence. He holds a bachelor’s degree in Civil Engineering and a Master Mariner Unlimited certificate.
Andrew's work focuses on a narrow question: why can a foreseeable operational failure that is manageable in one location become catastrophic in another? HarborArc develops that question through the identification of unacceptable outcomes and consequence multipliers, followed by examination of exposure legitimacy, recoverability and survivability.
The objective is not to compete with existing safety systems or technical disciplines. It is to provide a consequence-first governance framework that helps ports, insurers, infrastructure owners and regulators see where deeper technical evidence, operational change or governance attention may be justified.
Start with one real exposure
Start with one catastrophic exposure that matters.
The strongest starting point is not a broad consultancy brief. It is one consequential port system, asset or vessel–infrastructure interaction where you want to know whether existing processes are making catastrophic exposure sufficiently visible.