By Bosphorus News Geopolitics Desk
Three major Russian grain terminals on the Black Sea have restricted truck deliveries as attacks on commercial shipping, tighter navigation controls and cargo diverted from the Sea of Azov place growing strain on the country's export system.
Five industry sources told Reuters that the measures affected the Novorossiysk Grain Terminal, known by its Russian abbreviation as NZT, the KSK Grain Terminal in Novorossiysk and the Taman Grain Terminal Complex, known by its Russian abbreviation as ZTKT. The three facilities have combined annual capacity exceeding 20 million tonnes, compared with Russian seaborne grain exports of about 50 million tonnes.
The terminals have not halted operations. Grain loading continues, and the two Novorossiysk facilities can still receive cargo by rail. The limits apply to road deliveries, although the effect is greater at ZTKT because it depends entirely on trucks.
The measures show how disruption is spreading beyond ships and ports. Security constraints are beginning to alter the road, rail and storage networks that feed Russian grain exports before cargo reaches the coast.
Sea of Azov restrictions redirect grain
The immediate strain followed restrictions on shipping through the Sea of Azov after Ukrainian drones struck Russian commercial vessels operating along the route.
The Sea of Azov handles about one quarter of Russia's grain exports. Cargo from southern production regions that would normally leave through Azov ports has instead been redirected by road and rail towards the deeper-water terminals at Novorossiysk and Taman.
Russia's Transport Ministry said on July 14 that measures were being taken to protect civilian shipping and maintain cargo movements in the Sea of Azov. Port captains were adjusting vessel traffic and shortening processing times, while bulk cargo could be shifted to other transport modes and routes when required by the security situation.
That redistribution sent additional volumes towards facilities already operating under tighter controls.
Industry sources cited by Reuters said vessel movements at Novorossiysk had also been restricted between midnight and 5 a.m. because of the drone threat. Daytime operations continue, but the loss of overnight access reduces flexibility at a port handling roughly one third of Russia's grain exports.
The truck limits reflect both the diversion of cargo from the Sea of Azov and the reduced operating window at Russia's main Black Sea export hub.
The terminals face different levels of strain
About one third of the grain delivered to the Novorossiysk terminals arrives by truck, with most of the remainder transported by rail.
KSK, Russia's leading deep-water grain terminal, has annual capacity of 10.5 million tonnes. It can receive about 800 grain trucks and 180 rail wagons a day and has silo capacity of roughly 220,000 tonnes.
The facility handled 7.4 million tonnes of grain exports in 2025, down from a record 10.3 million tonnes in 2024, but retained its leading position in Russia's deep-water grain transshipment market.
NZT can also maintain part of its inbound flow through rail. ZTKT is more exposed because it receives grain only by road, leaving it with fewer alternatives when truck arrivals are restricted.
Russian grain exports have not stopped. The immediate effect is a loss of flexibility, with a higher risk of queues, storage constraints and delayed vessel loading when cargo volumes shift unexpectedly.
War risk spreads into port logistics
The truck restrictions are the latest stage in a broader Black Sea maritime campaign that has spread from vessels to ports, terminals and grain corridors.
Russia and Ukraine have increasingly targeted the commercial systems supporting each other's maritime trade. Russian strikes have damaged Ukrainian ports, storage facilities and vessels around Odesa, while Ukrainian attacks have placed Russian ships, Azov routes and export infrastructure under greater strain.
Turkish-linked shipping has repeatedly been caught between the two sides.
The Turkish-owned ATA 2 was struck by three drones after leaving Ukraine's Port of Chornomorsk with a cargo of corn. The bridge and accommodation block were hit, although all 13 crew members survived.
The Turkish-managed Golden Leo later sank off Odesa after a missile attack killed nine crew members and a Ukrainian maritime pilot.
The Turkish-flagged MV Reyhan Sarı was also struck while carrying Russian coal, showing that the exposure extends to vessels serving both Russian and Ukrainian trade.
The incidents also underline the limited protection offered by ownership, flag, management or crew nationality once a vessel enters contested Black Sea routes.
The latest limits carry the same risk inland. The conflict is now affecting not only ships at sea, but also the transport networks supplying the ports from which they depart.
Türkiye and Egypt face higher supply-chain risk
Novorossiysk and Taman serve major grain importers across the Middle East and North Africa, with Türkiye and Egypt among their principal customers.
Russian wheat supports both Türkiye's domestic milling industry and its exports of flour and processed food. A prolonged disruption could affect delivery times, freight and insurance costs, and millers' margins.
There is no indication that shipments to Türkiye have stopped. The near-term risk is a supply chain that becomes more expensive and less predictable rather than a physical cutoff.
Egypt, Iran and other markets that depend heavily on Russian and wider Black Sea grain could face similar pressures.
Russia remains the world's largest wheat exporter. Its grain industry lobby warned on July 31 that attacks on ships and port infrastructure could eventually interrupt Black Sea exports and affect food security in Africa and the Middle East.
That warning reflects the exporters' position rather than a confirmed outcome. Grain futures have responded to the security risks, but large global supplies have so far limited the price impact.
Alternative routes have limited capacity
Russia can redirect some cargo towards Baltic ports, which industry sources consider safer than the Black Sea. Moving grain from southern production regions to the Baltic, however, requires longer journeys and higher rail costs.
Rail can absorb part of the displaced volume, but wagon availability, network capacity and regional coverage impose limits. The Novorossiysk terminals have rail access, while ZTKT's dependence on trucks leaves it more exposed.
The Caspian Sea provides another outlet, particularly for trade with Iran, but it serves fewer markets and faces its own regional security risks.
Rivers and inland waterways offer additional options, although seasonal conditions, vessel draft and limited capacity restrict their use.
None can immediately replace the scale or efficiency of the Azov-Black Sea system.
Export system loses room to absorb shocks
Russia's Black Sea terminals remain open and grain continues to move. The importance of the truck limits lies in the loss of spare capacity around the system.
The Sea of Azov is operating under tighter controls. Novorossiysk has lost part of its nightly navigation window. Diverted cargo is increasing strain on roads and railways, while attacks on vessels are raising insurance costs and making crews harder to secure.
No single measure has stopped exports. Together, they leave less room to absorb delays, reroute cargo or maintain regular loading schedules.
The Black Sea grain disruption has moved beyond attacks on ships. Port restrictions and inland logistics are now part of the same grain export security crisis.
Sources: Reuters, Russian Ministry of Transport, KSK Grain Terminal, Delo Group and Bosphorus News reporting and review.