See the before it becomes a cost.
OAS gives your planning team a view of every vessel, every berth, and every scheduling conflict across your full schedule. The earlier you see it, the more options you have to act on it. A single undetected berth conflict can generate significant avoidable demurrage costs.
Reduce controllable demurrage costs by 50% with OAS

The world's leading operators and terminals trust Maron.
Avoidable demurrage always starts somewhere. OAS shows you when and where before it costs you.
Our Product
Berth Board
Every vessel, berth, status, and ETA visible in one colour-coded view, updated as movements change. Berth board
Demurrage Mitigation
Track estimated demurrage exposure by vessel, berth, and schedule. See the patterns before they become costs. Demurrage mitigation
Full Visibility
Completed, active, and planned operations displayed across one dashboard. Every logged event visible to the right people, in real time. Full visibility
Terminal Safety
Shipment locking and safety clearance for every vessel movement. Terminal safety
The berth conflict you do not see today is the demurrage cost you face tomorrow.
Find out how OAS flags berth conflicts before they reach your P&L.
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Platform Capabilities
Everything in the Jetty Scheduling module
Drag-and-drop scheduling
Reschedule vessels on the berth board with built-in constraint checking. Every change is validated before it is confirmed.
Conflict Detection. Days Ahead
OAS flags berth overlaps before vessels arrive, giving scheduling teams the window to act before the cost is incurred.
Berth Planner
Plan and visualise vessel arrivals, departures, and berth allocation across the full schedule. Conflicts visible before they become commitments.
Demurrage reporting
Track demurrage exposure by vessel, berth, and month. Compare counterparty claims against OAS-calculated laytime to identify the patterns that keep generating costs
Connected to OAS Oil Accounting
Vessel event data flows directly into mass balance and oil accounting records. No manual re-entry and no data gaps when month-end arrives.
SOF. Built at the Jetty. Audit-Ready Before the Vessel Sails
Every key shipment event logged with required fields as it occurs. The Statement of Facts is complete and defensible by the time the vessel clears the berth.
Five questions. Real impact.
The diagnostic that helps refinery and terminal teams tackle demurrage reduction strategically. What you’ll gain:
- A sharper view tracing demurrage back to its source
- Practices that are set up to support analysis, attribution, and claims defence
- The foundation for turning your findings into a case for change
Free Guide
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