TankerMap takeaway
TankerMap data for the latest complete UTC day, 2026-07-21, points to a sharper pullback at the Red Sea gateway than at Suez itself. Bab el-Mandeb recorded 3 tanker transits, down 36% from the preceding seven-day average. By contrast, the Suez Canal logged 12 tanker transits, only 3% below its own prior-week average. That split suggests the immediate pressure is showing up first at the southern entrance to the Red Sea rather than as a full collapse in canal activity.
What changed
The Bab el-Mandeb chart has been volatile for a month, with several zero- or very low-transit days mixed with short rebounds. The latest point reverses the strong 9-transit reading seen on 2026-07-20 and lands well below the recent moving average of 4.7. The composition also mattered: of the 3 Bab el-Mandeb transits on 2026-07-21, 2 were crude tankers, 0 were product tankers, and 1 was LNG. At Suez, the latest 12-transit total was closer to recent norms and included 9 crude and 3 product tankers, with no LNG transit that day. This pattern fits reports that fresh Houthi threats are having a wider effect on tanker routing decisions.
Why it matters
Bab el-Mandeb is the operational choke point for tanker access between the Gulf of Aden and the Red Sea. A drop there can be an early signal of shipowners, charterers, or operators delaying voyages, rerouting, or waiting for clearer security conditions before committing to a passage northbound or southbound. The fact that Suez traffic has not fallen nearly as sharply may mean some vessels already in the Red Sea continued onward, while new entries at the southern gate became more cautious. If that divergence persists, it would imply mounting friction in route planning even before a clearer decline appears in canal counts.
Uncertainty
One day does not establish a trend, especially because both series are noisy on a daily basis. Bab el-Mandeb counts have swung from 0 to 9 within the same month, so a single low reading can reflect timing effects as well as security behavior. The source reporting points to fresh threats affecting tanker activity, but TankerMap alone cannot assign motive vessel by vessel. It also cannot show whether ships diverted around the Cape, paused nearby, or simply crossed on different dates.
What would confirm or refute
Confirmation would come from several more complete UTC days with Bab el-Mandeb transit counts staying materially below their recent average, especially if Suez then also begins to soften after a lag. More repeated low readings in crude and product segments would strengthen the case that the effect is broad-based. Refutation would come from a quick rebound in Bab el-Mandeb traffic back toward the 5-9 transit range seen on multiple recent days, alongside stable Suez counts, which would suggest the latest drop was a temporary fluctuation rather than a sustained deterioration in Red Sea tanker flows.