Two cargo ships have arrived at a Ukrainian port after travelling through the Black Sea using a new route, Ukrainian port authorities said.
They reached Chornomorsk on Saturday, and were due to load 20,000 tonnes of wheat bound for world markets.
Officials said it was the first time civilian ships had reached a Ukrainian port since the collapse of a deal with Russia ensuring the safety of vessels.
Until now the corridor had only been used by ships departing from Ukraine.
Deputy Prime Minister Oleksandr Kubrakov said the ships - Resilient Africa and Aroyat - sailed flying the flag of the Oceanic island nation of Palau and that their crew consisted of people from Ukraine, Turkey, Azerbaijan and Egypt.
The vessels will deliver the wheat to Egypt and Israel, according to Ukraine's agricultural ministry.
Their arrival comes after Russia abandoned a UN-backed deal that facilitated Ukrainian grain exports from Chornomorsk and two other Black Sea ports in July.
Moscow said parts of the deal allowing the export of its food and fertilisers had not been honoured and complained that Western sanctions were restricting its own agricultural exports.
Since then, Russia has threatened to treat civilian ships sailing to Ukraine as potential military targets.
Earlier this week, the UK accused Russia of targeting one such vessel with multiple cruise missiles as it rested in the Ukrainian port of Odesa recently.
Ukraine is one of world's biggest suppliers of crops such as sunflower oil, barley, maize and wheat.
When Russia invaded in February 2022, its navy blockaded the country's Black Sea ports - trapping 20 million tonnes of grain which were meant for export.
This caused world food prices to soar and threatened to create shortages in Middle Eastern and African countries, which import significant amounts of food from Ukraine.
Some of these countries, including Afghanistan, Yemen, Sudan and Ethiopia, remain in desperate need of humanitarian aid.
As well as threatening ships passing through the Black Sea, Moscow has increasingly targeted Ukrainian port infrastructure.
It has repeatedly attacked the ports of Izmail and Reni, where much of Ukraine's grain exports have been leaving from since July, to try and disrupt operations.
Kyiv has accused Russia of a "cynical" attempt to damage its grain exports and undermine global food security.