Ukraine’s Ports in September 2026: Military Escalation and the Collapse of Deep-Water Shipping

Situation overview

In autumn 2026, Ukraine’s maritime exports are operating not in a state of complete shutdown, but in a state of severe compression. Formally, the maritime corridor still exists: cargo continues to move, and part of the flow is being absorbed by the Danube, the railway network, road border crossings and Romania’s Port of Constanța. But the economics of maritime exports have been broken — and the figures show it clearly.

Alternative routes can carry only part of the export flow. In August, exports of agricultural products stood at roughly one third of the potential volume under fully functioning logistics, while rail, road and the Danube ports can at best cover around half of the former capacity of the Black Sea ports. At the same time, cargo handling in the ports of Greater Odesa fell more than fifteenfold after 22 July — meaning that the deep-water segment has effectively stopped functioning. The remaining export flows increasingly depend on the Danube ports, railways, road border crossings and external ports, above all Constanța. Against this backdrop, the grain export forecast for the 2026/27 season has been cut from 43 million tonnes to 38 million tonnes.

The current state of the sector can no longer be described in terms of “new resilience”. The system has not disappeared, but it is operating in an emergency configuration: Ukraine is still exporting, but it is doing so at higher cost, more slowly, with less predictability and with a larger internal discount for the producer.

For the first time in several years, a counter-signal has also appeared: a diplomatic attempt to agree on the safety of navigation, which the market has already begun to price in cautiously. Both processes are unfolding at the same time, and it is their combination that defines the situation today.

Greater Odesa: the key hub without normal operating conditions

The ports of Greater Odesa remain the main instrument of Ukrainian exports. Deep-water ports provide what bypass routes cannot: large parcels, low cost per tonne, access to distant markets and the ability to handle bulk cargoes at industrial scale. That is why their current shutdown is so painful.

For the economics of exports to break down, a port does not need to be physically destroyed. It is enough for shipowners to begin refusing port calls, for insurers to raise premiums, for traders to stop accumulating cargoes with confidence, and for buyers and banks to price additional risks into transactions. At that point, the port is not formally blocked, but its commercial capacity collapses. This is exactly what has happened: every port call has become a complex project involving military, insurance and financial risk, rather than a routine operation.

Attacks on ports and vessels are undermining maritime safety

Damage to terminals, warehouses, power infrastructure and access routes caused by Russian air attacks is only the visible part of the problem. An equally serious blow has been dealt to the safety of navigation.

When the risk concerns a terminal or a berth, business and the state discuss repairs, backup capacity and property insurance. When the risk concerns a vessel and its crew, the decision moves beyond Ukrainian logistics: the shipowner, the master, the P&I club, the war-risk insurer, the charterer, the bank and the final buyer all become involved. The scale of the threat is no longer abstract: in July and the first half of August alone, 52 civilian vessels were affected by Russian air attacks. The situation was further aggravated by the involvement of vessels linked to Turkish owners and operators, something that had not previously been the case: after attacks on such vessels, Ankara publicly warned of risks to civilian shipping in the Black Sea and began promoting the idea of a new security mechanism.

Insurance has become a barrier

In mid-September, the Joint War Committee updated its list of areas of heightened war risk, extending it to the entire open Black Sea, excluding the territorial waters of Turkey, Georgia, Bulgaria and Romania. This is not a ban on navigation, but for vessels heading to Ukrainian ports it means a longer section of the voyage under war-risk cover and separate negotiations with insurers.

Previously, the calculation of the war premium was concentrated mainly on the Ukrainian corridor and the section beyond Sulina. Now the risk begins much earlier, after leaving Turkish territorial waters. War premiums for calls at Ukrainian ports already exceed 1% of the vessel’s value, while the additional time under cover adds several more dollars per tonne.

On paper, $3–5 per tonne does not look catastrophic. In practice, for grain, corn, meal or ore, it can be the difference between a deal and no deal — especially when higher freight, vehicle downtime, more expensive inland logistics and the buyer’s discount for the Ukrainian route are added on top. This creates the main economic effect: global grain prices may rise, but the Ukrainian producer receives none of that increase.

The Danube works, but it does not replace the sea

The Danube ports have once again become one of the main elements of survival for Ukraine’s export logistics. But survival is not the same as a normal replacement.

The ports of Izmail, Reni and Ust-Dunaisk handle part of the flow and are connected to Constanța and European infrastructure. Over the years of war, Ukrainian business has learned to work on this route. But the limitations of the Danube are obvious: draft restrictions, smaller parcels, dependence on the Sulina Canal, waiting time for passage, a shortage of pilots, a shortage of fleet and, as a result, a higher cost per tonne. The peak capacity of the Danube route in 2022–2023 was around 2.5 million tonnes per month — and that is the ceiling of the route.

The limit was clearly demonstrated by the queue at Sulina: in late August, up to 70 vessels were waiting at the canal, while real throughput stood at 5–7 vessels per day, with priority given to fuel cargoes and port operations restricted by air-raid alerts. The Danube reduces the scale of the crisis, but it does not eliminate it: it is an important emergency circuit, not a substitute for Odesa, Chornomorsk and Pivdennyi.

The reserve route is also vulnerable

The situation with rail access to the Danube is even more worrying. Damage to the bridge near Bilhorod-Dnistrovskyi in Odesa region sharply restricted the delivery of grain to the Danube route: cargo now moves through Moldova, where transit capacity is limited.

According to Ukrzaliznytsia, around 3,000 grain railcars are heading to the Danube ports, and without the restoration of the bridge the minimum waiting time for them is about 26 days. Since the beginning of September, around 118,000 tonnes of grain have been delivered to the Danube by rail, while another 346,000 tonnes of agricultural products have moved through land border crossings. The shift in flows is visible in the railcar data: by 10 September, only around 210 railcars were moving toward Greater Odesa, while almost 2,800 were heading toward the Danube.

This is the weakness of the current scheme. When Greater Odesa is restricted, cargo shifts to the Danube. When the route to the Danube itself becomes vulnerable, the system loses not one route, but the second layer of redundancy.

Constanța has again become a lifeline hub, but it is not unlimited

Romania’s Port of Constanța is one of the main external outlets for Ukrainian grain and containers. But it is not a Ukrainian port, and it is not infrastructure built for Ukrainian exports.

Ukrainian wheat is actively moving through Constanța: about 1 million tonnes in July, around 600,000 tonnes in August, and in September the market again expects volumes to approach 1 million tonnes. But from October, wheat will begin competing with the new corn crop for the same logistics capacity — and Constanța will turn from a solution into a new point of competition between Ukrainian crops.

Prices on external markets look attractive: last week Egypt was buying Ukrainian wheat at around $300–307 per tonne. But the transport component sharply worsens the final economics — in two weeks, ocean freight to Egypt rose from around $60 to $100–105 per tonne. A high CIF price does not mean a high price for the Ukrainian producer. The more expensive the route, the less money returns to the trader, the elevator and the producer.

The domestic grain market is paying for the port blockade

The crisis is most acute in grain, and the problem is no longer only how to physically export the harvest, but that the harvest is losing liquidity.

New-crop corn in the Danube ports has fallen to around $165–170 per tonne CPT-port. Several factors are weighing on the market at once: the expected arrival of the new crop, high carryover stocks, the shutdown of the Greater Odesa ports, the high cost of alternative routes and buyer concerns. In the domestic market, corn at elevators and processors is trading at around UAH 6,500–7,500 per tonne.

A separate blow has come from the administrative problem of minimum export prices. The state minimum price has been set above the current market, which has led to difficulties and blockages in customs clearance of contracts. An additional constraint was the European Commission’s refusal to increase the import quota for Ukrainian wheat.

As a result, the internal basis is deteriorating: the producer sees the world price but receives it after deducting more expensive logistics, insurance, reduced export capacity, vessel downtime, risk and administrative barriers. The export problem is turning into a domestic procurement price problem.

Storage has turned from a supporting service into a survival issue

The slowdown in exports has led to congestion not only at ports, but also in domestic storage.

Existing capacity is largely filled with wheat and rapeseed, while corn — the largest crop by volume — arrives in October. According to estimates, the storage deficit could reach 10–11 million tonnes by November. The response is so far an emergency one: the Ministry of Agrarian Policy has raised around $12 million for polymer storage bags for frontline farms, while another $25 million for storage of more than 6 million tonnes is expected through the World Bank. A grain bag allows grain to be physically preserved, but it does not solve the problems of price, quality, financing and export.

Thus, the port crisis is turning into a crisis of storage logic: what to sell now at a discount, what to store, what to send to an elevator, how to free up capacity for the next crop and how not to lose quality. This is no longer simply a question of “port handling”; it is a question of the entire chain from field to vessel.

Road logistics is moving west, but it cannot save the system

Grain trucking is also being reconfigured: part of the flow is shifting from Odesa region to western regions, where stable queues of trucks in both directions are already being recorded at the borders.

This helps redistribute part of the cargo, but it does not replace maritime shipments. Road transport is expensive and depends on fuel, queues, border-crossing capacity and driver availability. It can be part of an emergency scheme, but it cannot be the foundation for exporting tens of millions of tonnes.

The international market sees Black Sea war risk — and at the same time a chance of de-escalation

Ukrainian Armed Forces strikes on Russian maritime infrastructure, including cargo vessels, are also continuing. Foreign sources describe the situation as a broad Black Sea security crisis. The expansion of the war-risk zone to almost the entire sea shows that the insurance market is reassessing not Ukrainian ports alone, but the sea as a whole.

Without normal exports through the Black Sea, the deficit of Ukraine’s agricultural sector could reach $7–8 billion, while Kyiv has previously estimated potential losses from blocked agricultural exports at $12–13 billion.

In mid-September, Turkey sent Russia and Ukraine a draft memorandum on ending attacks on civilian vessels, inspired by the 2022 grain deal. The key idea is to protect the vulnerable section of the route where a vessel exits territorial waters into international waters; a second route along the coasts of Georgia and Turkey is also being proposed. In parallel, a proposal for a ceasefire on strikes against energy infrastructure appeared on the negotiating track: Ukraine stated that it was ready to support the arrangement if Russia agreed, while Moscow responded to the proposal cautiously positively. The market perceived this as a first cautious signal of de-escalation.

However, in practice, de-escalation is not visible: the strike on the bridge, continuing attacks on vessels and ports, and new sanctions remain in place. Experts doubt that the sides will quickly agree on a memorandum.

Conclusion

Ukraine’s ports have not stopped completely, but they are operating in a severely restricted mode.

Deep-water ports remain indispensable, but they have effectively been excluded from logistics chains by Russian air and missile attacks, which have led shipowners to refuse calls at Ukrainian ports. The Danube is operating, but it does not replace Greater Odesa in terms of volume or cost, and it runs into the limits of the Sulina Canal. Constanța is receiving Ukrainian flows, but it is becoming a bottleneck and a point of competition between agricultural commodities. Rail and road transport help, but they increase the cost base, while damage to the bridge toward the Danube has exposed the fragility of the reserve circuit. Elevators and temporary storage are becoming a critical resource, and they are also exposed to Russian attacks. The agricultural sector is being hit not only on logistics, but also on liquidity — because of low prices and rising transport, logistics and production costs.

The essence of the crisis is that Ukraine can still export cargo, but it is increasingly unable to do so as a normal export economy. The logistics layer between the international buyer and the Ukrainian producer has become expensive, risky and unstable. For business, this means moving from choosing the optimal route to fighting for any executable route with acceptable losses and risks. For the state, it means having to address not one port issue, but the entire chain at once: navigation safety, insurance, freight, access to the Danube, railways, transit through neighbouring countries, storage, minimum export prices and working capital financing for farmers.

Potential diplomatic initiatives do not change this: restoring fleet confidence is measured in months, not days. Until these elements are assembled into a functioning system, Ukrainian exports will remain weakened — which, for an export-oriented economy, is almost as dangerous as a physical blockade.

Forecast: three scenarios for the coming months

For the next 3–6 months, the starting point is negative: the deep-water ports of Greater Odesa have dropped out of the normal export chain. The main question is whether conditions will emerge for a partial restoration of regular port calls.

Base-case scenario — 60% probability

The deep-water segment remains excluded from foreign trade activity, while the main export flow continues through the Danube, Constanța, railways, road border crossings and temporary mixed schemes. In this scenario, Ukraine preserves exports, but not a normal maritime export economy. Logistics remain expensive, slow and unstable; the internal grain basis remains under pressure; storage remains congested; and shipowners and insurers return to the Ukrainian direction only with extreme caution. For the agricultural sector, this means continued liquidity problems until safe port calls become possible.

Negative scenario — 30% probability

Attacks on ports, vessels, bridges, rail approaches or Danube infrastructure intensify. In this case, not only does the deep-water segment remain switched off, but the reserve routes also begin to perform worse: Sulina becomes congested, Constanța becomes an even tighter bottleneck, rail and road crossings face longer queues, and logistics costs continue to rise. For the market, this means a further decline in the domestic price received by producers, growing demand for storage and a widening gap between the world price and the price that actually reaches Ukraine’s agricultural sector.

Positive scenario — 10% probability

Diplomatic initiatives on navigation safety receive practical follow-through: the intensity of attacks on vessels decreases, a clear route-security mechanism emerges, and insurers and shipowners begin cautiously testing the Ukrainian direction with individual voyages. But even in this scenario, there is no quick return to normal operations in the ports of Greater Odesa. The recovery begins with a limited number of port calls, a higher insurance premium and “manual” coordination of voyages. Full fleet confidence can return only after a track record of safe port calls, not after a diplomatic statement.

The most likely trajectory is the preservation of an emergency export model: deep-water ports are effectively not operating as a normal mass export channel, while exports depend on expensive bypass routes. Ukraine will continue to move cargo, but with a high loss of efficiency. The main constraint is not the availability of cargo and not the formal existence of the maritime corridor, but the absence of a commercially acceptable regime of safe navigation.