Chokepoint
Black Sea and the Turkish Straits
The Black Sea to the Mediterranean
Black Sea trade reaches the Mediterranean through the Turkish Straits — the Bosphorus and the Dardanelles — both narrow and heavily trafficked. The region is a major exporter of grain, vegetable oils and fertiliser, which gives disruption here an outsized effect on food supply chains relative to the container volumes involved.
What passes through it
- Grain, sunflower oil and fertiliser exports from Black Sea ports
- Regional container and general cargo services
- Energy movements between Black Sea terminals and the Mediterranean
Typical disruption
- Conflict affecting commercial shipping and port operations
- Escort and corridor arrangements being introduced, suspended or withdrawn
- Mine risk advisories in specific areas
- Insurance cover for the corridor tightening or becoming unavailable
The alternative, and what it costs
Rail and road through central Europe, at considerably higher cost per tonne and far lower volume. For bulk agricultural commodities, overland routing cannot replace sea freight at comparable scale.
What this means for your suppliers
For food and FMCG buyers this is usually the highest-consequence chokepoint on the map, because cover is thin and substitution takes time to arrange.
The signal to watch is the status of escort arrangements rather than the volume of news coverage. Status changes are discrete events with immediate effects on whether vessels sail.
Where a qualified alternative supplier exists outside the region, a suspension is the moment to switch rather than to wait for resolution.
Other chokepoints
The rest of the map
See it against your own lanes
We load a sample of your suppliers, run a live scenario, and show which orders would slip.