Strait of Hormuz — two complementary sources

Strait of Hormuz — how two sources fit together

Use MarineTraffic / Kpler for dated daily history (who crossed, by risk class). Use Hormuz Strait Monitor for a live operational snapshot — especially past 24 hours transit counts — which does not expose a full downloadable time series.

Source	What it is good for	Time horizon
History Kpler via MarineTraffic	Daily stacked counts (sanctioned / shadow / all rest), analyst-verified, citable for charts and CSV work.	Day-by-day series (e.g. March 1–25 in the published monitor).
Live Hormuz Strait Monitor	Real-time strait status, throughput, and transits in the last 24 hours (rolling window).	No historical archive in the product — values refresh; yesterday’s “24h” number is not stored for export here.

Source

What it is good for

Time horizon

History Kpler via MarineTraffic

Daily stacked counts (sanctioned / shadow / all rest), analyst-verified, citable for charts and CSV work.

Day-by-day series (e.g. March 1–25 in the published monitor).

Live Hormuz Strait Monitor

Real-time strait status, throughput, and transits in the last 24 hours (rolling window).

No historical archive in the product — values refresh; yesterday’s “24h” number is not stored for export here.

Historical chart data

For time-series charts (day-by-day bars or lines), the data path in this project is: Kpler Risk and Compliance as published in MarineTraffic’s daily monitor → transcribed into strait_of_hormuz_vessels_mar2026.csv → plotted in hormuz_dashboard.html.

That CSV is the only local historical series here: one row per calendar day with sanctioned, shadow, all rest, and total vessels.

Updating history: when MarineTraffic publishes a new daily article, the chart in that article extends the series — you add new dates (or revise cells) in the CSV to match, then refresh the chart page.
Hormuz Strait Monitor: does not replace this. It does not ship a table of past daily transits comparable to the Kpler buckets; it shows a live rolling 24h readout instead.

Download latest SOH CSV Open main dashboard (stacked + live)

Historical series & article

Kpler MarineTraffic maritime news

Daily “Vessels crossed SOH by risk level” tables/charts with source attribution to Kpler Risk and Compliance. Pairs with a local CSV tabulation for your own plots.

Find latest monitor (Risk & Compliance) Sample article (Apr 2026 series) Download latest SOH CSV (local)

Live tracker — past 24 hours

Live Hormuz Strait Monitor

Interactive dashboard: current strait status, traffic overview, and metrics such as transits (24h) and ships transiting now. Figures are a rolling snapshot, not a history file.

Open Hormuz Strait Monitor

Live page embed (optional)

If the frame is blank, the site may block embedding — open hormuzstraitmonitor.com directly. The dashboard shows a rolling past 24 hours view (not a downloadable history).

Why not merge the two into one chart? They measure related ideas on different bases: Kpler’s series is daily classified crossings for completed days; the monitor’s “24h transits” is a live operational counter that moves with the clock. For trends and accountability, prefer the MarineTraffic/Kpler series; for “what’s happening right now,” open the monitor. Primary view: hormuz_dashboard.html (stacked chart + live tracker, then facet tabs). Older layout: hormuz_stacked_comparison.html (charts only from strait_of_hormuz_vessels_mar2026.csv).