Suspected Arms Cargo Ship From Iran Sinks in the Caspian

An Iranian-flagged, ship sunk in the Caspian Sea as it was returning from a voyage to Russia on Wednesday, according to authorities in Turkmenistan. The cargo freighter was suspected of carrying weapons from Iran to Russia through a route popular for that purpose.

The bulk carrier, the Rona, had a displacement of 2,453 tons, and was 114 meters long (about 350 feet) and 13 meters (about 40 feet) wide. Turkmenistan’s Ministry of Foreign Affairs said that rescuers saved all 14 people on board the Rona, all of them citizens of Iran and India, after an SOS signal went out from the vessel.

Tracking data shows that the Rona called at the Russian ports of Astrakhan, Makhachkala and Azov some 20 times between October 2024 and December 2025. It sailed there from the Iranian ports of Amirabad and Anzali. Again, the Rona’s destination this time was Astrakhan.

Last month, a unit from Ukraine’s Special Operations Forces, in cooperation with the resistance movement Chornaya Iskra (Black Spark), carried out a special operation in the Caspian Sea that resulted in the striking of two Russian vessels transporting weapons and military equipment.

In August 2025, Ukrainian forces struck the Olya seaport in the Astrakhan region, hitting a ship loaded with Shahed drone components and ammunition from Iran. Olya serves as a key logistics hub for importing military supplies from Iran.

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According to a statement from Ukraine’s Armed Forces at the time, Special Operations Forces (SSO), in coordination with other units of the Defense Forces targeted the port to reduce Russia’s capacity to launch airstrikes.

A CNN report in 2023 zeroed in on the shipping routes used by suspected arms shipments, cataloguing the hundreds of ships that turned off their transponders at certain points in the trips, or “going dark”.

“Most gaps in the tracking data for Russia-flagged and Iran-flagged cargo ships have occurred near Iran’s Amirabad and Anzali ports, as well as in Russia’s Volga River and its port in Astrakhan,” the CNN report read.

“There is no risk to Iranian exports in the Caspian Sea because of the bordering countries – they don’t have the capability or motive to interdict in these sorts of exchanges,” Martin Kelly, lead intelligence analyst at security company EOS Risk Group, told CNN.

It’s a “perfect environment for this trade to go unopposed,” Kelly added.

A Wall Street Journal Report, also in 2023, verified that “Russian ships are ferrying large quantities of Iranian artillery shells and other ammunition across the Caspian Sea to resupply troops fighting in Ukraine.”