News & live signals
The real numbers behind the maritime news — port congestion, chokepoint transits and ETA accuracy, pulled live from AIS across 51 ports and 12 chokepoints. Observed, dated, sourced. We state the figure; we don't infer intent.
Briefs
We checked our ETA against the ship's own: 2.8 h vs 32.8 h
Across 371 closed voyages to Rotterdam over the last 30 days, Port Flow's predicted ETA was off by 2.8 hours on average. The crew-broadcast ETA those same ships transmit was off by 32.8.
Read →Port Flow data briefs: the numbers behind the maritime news
Each brief crosses a real Port Flow signal with the story you're already reading — port congestion, chokepoint transits, AIS gaps, ETA accuracy. Observed, dated, sourced.
Read →In the news — tied to our coverage
Named sources, headlines & links only. Where a story overlaps a place we track, our live figure is attached.
- gCaptain · Strait of HormuzMaritime Industry Demands Clarity on Hormuz Reopening as Mine Risks Persist
- gCaptain · Strait of HormuzIran Deal Raises Serious Questions Over Future Management of the Strait of Hormuz
- gCaptain · Strait of HormuzIran Deal Opens Door to Hormuz Reopening, But Shipping Industry Warns of Long Road Ahead
- gCaptain · Strait of HormuzThree Saudi-Flagged Supertankers Sail Through Hormuz After Iran Deal Signed, Data Shows
- gCaptain · Strait of HormuzTrump Signs Interim Iran Deal as Focus Shifts to Hormuz
- gCaptain · Persian GulfBarnacle Boom: Divers Race to Clean Ships Stranded in Persian Gulf
- gCaptain · Strait of HormuzHormuz Crisis Leaves Lasting Mark on Oil Markets as Demand Slumps, IEA Says
Numbers worth sharing
Predicted ETA error: 2.3h vs 40.5h for the crew-broadcast ETA, on 336 closed voyages (Rotterdam, 30d). We publish the number. portflow.uk/precision
🇸🇬 Singapore: 54 vessels at anchor right now — 42% of everything in port is waiting. Live on Port Flow. portflow.uk
Strait of Malacca: 5607 vessel transits tracked in the last 7 days. We watch 12 chokepoints live. portflow.uk
Live now
| Port | At anchor | Total | % waiting |
|---|---|---|---|
| 🇸🇬 Singapore | 54 | 129 | 42% |
| 🇯🇵 Yokohama / Tokyo Bay | 6 | 25 | 24% |
| 🇪🇸 Valencia | 13 | 62 | 21% |
| 🇮🇹 Trieste | 12 | 57 | 21% |
| 🇫🇷 Le Havre | 13 | 70 | 19% |
| 🇫🇷 Marseille-Fos | 8 | 48 | 17% |
- Strait of Malacca5607
- Skagerrak2791
- Bosphorus1936
- Dover Strait1802
- Singapore Strait1306
- Strait of Gibraltar1116
Methodology: figures are from public AIS across 51 ports and 12 chokepoints. We also run AIS-gap (dark) and loitering detection, but raw counts conflate intentional gaps with coverage holes — so we treat those as leads to investigate, not headline numbers. Where coverage is thin (parts of the Med and the Gulf) we say so rather than overstate. See the methodology and accuracy benchmark.