Demurrage exposure calculator
What is waiting at anchor costing you today? Pick a port, set your demurrage rate, and get the exposure — computed from live anchorage dwelland each port's own historical baseline, not a static average.
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Don't discover the queue after your vessel joins it
Paid tiers watch your vessels and alert you — Slack, Telegram, email or webhook — when waiting times surge at the ports you care about, with a live demurrage risk score per arrival.
How it's computed
- Right now: median time-at-anchor of vessels currently anchored in the port's anchorage zones (public AIS, refreshed continuously).
- Typical / bad-day: the port's own P50 / P95 of completed anchor-dwell episodes, recomputed daily per cargo class. Ports without enough history fall back to sector defaults — flagged when that's the case.
- Exposure = dwell hours × your day rate ÷ 24. Anchor dwell is a proxy for waiting-for-berth; loading/discharge laytime is not included.
- Same data feeds the public ETA benchmark and prediction receipts.
The weekly data brief
Congestion anomalies and waiting-time surges across 51 ports — one email a week.
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