Ongoing Houthi attacks on Saudi-linked vessels, including strikes near Yanbu and the Jizan refinery in late August, have sustained elevated war-risk premiums and prompted selective rerouting or AIS-dark transits, compressing mainstream tanker flows through Bab el-Mandeb while supporting resilient overall volumes from other operators. Weekly crossing data from late August showed 48- to 72-hour periods ranging 60–81 vessels, consistent with full-week totals near 180–220 when including dark movements and non-tanker traffic. This keeps the 170–189 and 190–209 bins closely contested, as modest fluctuations in daily activity—driven by attack timing, shadow-fleet participation, and Suez recovery—can shift the outcome. Key differentiators include visibility improvements from fewer dark transits versus persistent Saudi export constraints, with any escalation or lull in incidents before resolution likely determining the final tally.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHow many ships transit Bab el-Mandeb Strait week of August 31?
190-209 40%
170-189 35%
210-229 22%
230+ 5%
$34,574 Vol.
$34,574 Vol.
<170
2%
170-189
35%
190-209
40%
210-229
22%
230+
5%
190-209 40%
170-189 35%
210-229 22%
230+ 5%
$34,574 Vol.
$34,574 Vol.
<170
2%
170-189
35%
190-209
40%
210-229
22%
230+
5%
Transit calls include container, dry bulk, roll-on/roll-off, general cargo, and tanker ships. Ships not reported by IMF Portwatch will not be considered.
This market will resolve as soon as all relevant data has been published. If the relevant data is not published within 14 calendar days of the specified date, this market will resolve based on the most recent data published up to that point.
In case of obvious data integrity issues (i.e., erroneous data), the market may remain open until the end of the third calendar day (ET) after the date on which such data is first released to allow for corrections. Data integrity issues refer only to clerical or other similar errors in the underlying data, and do not include cases where IMF Portwatch differs from alternative sources.
Only revisions to previously published data points made before all relevant data has been published will be considered.
The resolution source for this market will be IMF PortWatch, specifically the “Arrivals of Ships” data published for the Bab el-Mandeb Strait at https://portwatch.imf.org/pages/6b1814d64903461b98144a6cc25eb79c.
Market Opened: Aug 28, 2026, 6:08 PM ET
Resolver
0x69c47De9D...Transit calls include container, dry bulk, roll-on/roll-off, general cargo, and tanker ships. Ships not reported by IMF Portwatch will not be considered.
This market will resolve as soon as all relevant data has been published. If the relevant data is not published within 14 calendar days of the specified date, this market will resolve based on the most recent data published up to that point.
In case of obvious data integrity issues (i.e., erroneous data), the market may remain open until the end of the third calendar day (ET) after the date on which such data is first released to allow for corrections. Data integrity issues refer only to clerical or other similar errors in the underlying data, and do not include cases where IMF Portwatch differs from alternative sources.
Only revisions to previously published data points made before all relevant data has been published will be considered.
The resolution source for this market will be IMF PortWatch, specifically the “Arrivals of Ships” data published for the Bab el-Mandeb Strait at https://portwatch.imf.org/pages/6b1814d64903461b98144a6cc25eb79c.
Resolver
0x69c47De9D...Ongoing Houthi attacks on Saudi-linked vessels, including strikes near Yanbu and the Jizan refinery in late August, have sustained elevated war-risk premiums and prompted selective rerouting or AIS-dark transits, compressing mainstream tanker flows through Bab el-Mandeb while supporting resilient overall volumes from other operators. Weekly crossing data from late August showed 48- to 72-hour periods ranging 60–81 vessels, consistent with full-week totals near 180–220 when including dark movements and non-tanker traffic. This keeps the 170–189 and 190–209 bins closely contested, as modest fluctuations in daily activity—driven by attack timing, shadow-fleet participation, and Suez recovery—can shift the outcome. Key differentiators include visibility improvements from fewer dark transits versus persistent Saudi export constraints, with any escalation or lull in incidents before resolution likely determining the final tally.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated


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