Chokepoint & Maritime Risk Monitor (Hormuz, Suez, Red Sea, Black Sea)

Daily ship transit counts for 28 of the world's maritime chokepoints, from the Strait of Hormuz and Bab el-Mandeb to Suez, Panama, the Bosporus, Kerch, Malacca and the Taiwan Strait. Each chokepoint gets year-over-year comparisons and a disruption flag. Active navigational warnings (military exercises, firing areas, GNSS jamming, hazardous operations) are included and tagged by region.

Built for commodity and freight traders, shipping and insurance risk teams, supply-chain planners, journalists covering the Iran and Red Sea crises or the Russia–Ukraine war, and AI agents that need maritime context.

What you get

One row per chokepoint:

• Latest daily transits, and tanker transits.
• 7-day and 30-day average transits, overall and for tankers, compared with the same window one year earlier.
• disruption flag: severe (≤ −50% vs last year), elevated (≤ −25%) or normal.
• 7-day transits by ship type (tanker, container, dry bulk, general cargo, ro-ro) and average carried capacity in tons.
• Optional daily history (up to 400 days).

One row per active navigational warning:

• NAVAREA and subregion, message number and issue date.
• Full text.
• Region tags: Persian Gulf/Hormuz, Red Sea/Gulf of Aden, Black Sea/Ukraine, Eastern Mediterranean, Taiwan/South China Sea, Baltic.
• Risk keywords: missile, firing, drone, GNSS jamming, mine, piracy...

Example output (October 2026)

Chokepoint	7-day avg transits	Same week 2025	Change	Flag
Strait of Hormuz	3.1	86.4	−96%	severe
Kerch Strait	0	18.4	−100%	severe
Bosporus Strait	49.6	91.4	−46%	elevated
Bab el-Mandeb	27.1	33.3	−19%	normal
Suez Canal	40.0	42.7	−6%	normal

Input

{
  "include": ["chokepoints", "warnings"],
  "chokepoints": ["Hormuz", "Bab el-Mandeb", "Suez", "Bosporus"],
  "onlyDisrupted": false,
  "dailyHistoryDays": 30,
  "warningRegions": ["Black Sea / Ukraine"],
  "securityWarningsOnly": true
}

Data sources and caveats

• Transits: IMF PortWatch daily chokepoint data, derived from AIS ship tracking. It usually lags 4–7 days. Ships that switch off AIS ("dark" transits, common in conflict zones and shadow-fleet trades) aren't counted, so very low numbers mean traffic visible on AIS collapsed.
• Warnings: U.S. National Geospatial-Intelligence Agency (NGA) Maritime Safety Information broadcast warnings. Coverage is strongest for NAVAREA IV and XII and NGA's worldwide hydrographic warnings. Some regional authorities (e.g. UKMTO) aren't included.

Pricing

• $0.01 per chokepoint row. A full 28-chokepoint snapshot costs $0.28.
• $0.002 per warning.

No start fee.

Questions: open an issue or email hello@weirworks.com.

Independent tool by weirworks. Not affiliated with the IMF or NGA. Source: IMF PortWatch (portwatch.imf.org); NGA MSI.