Crew-declared ETAs drift by hours.Ours are measured.
Predicted ETAs, live congestion, sanctions screening and chokepoint alerts — with a published accuracy benchmark, not a marketing claim.
open methodology · documented limits · no card for the demo
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Cargo timing drives your P&L, but crew-declared ETAs drift by hours.
Predicted ETAs and live congestion indices feed your pricing and positioning before the market moves.
Demurrage eats margin when a berth is congested and you didn't see it coming.
Live waiting times and congestion across 51 ports — spot the bottleneck days ahead, route around it.
Sanctions and dark-fleet exposure are a daily liability, priced manually.
Multi-regime screening (UKSL · OFAC · UN-SC · EU FSF), war-risk zones and AIS-gap detection in one screen.
One screen from globe to berth
Six building blocks, one public benchmark
Predicted ETA + published benchmark
Our ETA vs the broadcast ETA, with an open RMSE/MAE benchmark — measured, not claimed.
Ports & chokepoints, live
Real-time AIS coverage across the world's tanker hubs and the straits that matter.
Multi-regime sanctions screening
UKSL, OFAC, UN-SC and EU FSF in one pass, with an audit trail.
Chokepoint transit alerts
Hormuz, Suez, Bosphorus, Malacca — transit counts, dwell time and deviations.
Dark-event / AIS-gap detection
In-house detection of vessels going dark in contested waters — behavioural, not speculative.
Watchlist, alerts & API
Slack · Telegram · Email · Webhook alerts, plus a JSON API and CSV export.
Transparent by design — read the methodology and the data sources, limits included.
Pricing that undercuts the incumbents
A full Kpler or Lloyd's List seat runs into tens of thousands a year. Port Flow starts free, scales with you, and cancels anytime.
Read-only across all 51 ports & 12 chokepoints.
Watchlist, alerts and a single seat for one desk.
Sanctions screening, 60-day history, CSV export, API.
Dark-fleet detection, SAR fusion, priority support.
annual billing shown · monthly available · VAT not applicable (art. 293 B CGI)
The weekly data brief
Congestion anomalies, chokepoint moves, precision updates — one email a week, numbers first. The same briefs published on /news.
One email a week. Unsubscribe in one click. No sharing with third parties.
A live tanker desk, one click away
No signup, no card. A 10-minute Professional-tier session, instantly.