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12 June 2026

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.

The news

The maritime headlines tell you something happened. They rarely tell you what the data underneath is doing — how many vessels are actually waiting, how many transits a strait saw this week, how far off the declared ETAs really are.

That's the gap these briefs fill. Port Flow already computes those signals live across 51 ports and 12 chokepoints. Each brief takes one of them, ties it to the news, and states the number — nothing inflated, nothing inferred.

What you'll find in every brief:

The signal
One real figure
congestion, transits, AIS gaps, ETA error
The context
Tied to the news
with a link to the source
The method
Open & dated
observable only — never intent

What it implies

If you trade, charter, insure or screen tankers, the point is simple: you can check the number yourself, on a live desk, in one click — no signup.

The line

We're publishing data briefs — the real numbers behind maritime headlines: port congestion, chokepoint transits, AIS gaps, ETA accuracy. Observed, dated, sourced. portflow.uk/news

Coverage is public AIS; where it's thin (parts of the Med and the Gulf), we say so rather than overstate. We describe what the data shows, not why.

Check any of these numbers yourself — live, no signup.

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