Sunken Russian Ship May Have Carried Secret Nuclear Reactors for North Korea
- A Russian cargo ship, the Ursa Major, sank in the Mediterranean Sea on December 23, 2024, while allegedly transporting components for nuclear reactors intended for North Korea.
- The incident has been characterized by high levels of secrecy and subsequent military activity around the wreckage.
- The nature of the shipment was confirmed through statements provided to Spanish authorities.
A Russian cargo ship, the Ursa Major, sank in the Mediterranean Sea on December 23, 2024, while allegedly transporting components for nuclear reactors intended for North Korea. An investigation by CNN indicates the vessel suffered a series of explosions and sank approximately 60 miles off the coast of Spain.
The incident has been characterized by high levels of secrecy and subsequent military activity around the wreckage. The timing of the voyage is significant, as the ship set sail approximately two months after North Korean leader Kim Jong Un deployed troops to assist Russia in its invasion of Ukraine.
Details of the Cargo and Ownership
The nature of the shipment was confirmed through statements provided to Spanish authorities. The Russian captain of the Ursa Major informed investigators that the vessel was transporting components for two nuclear reactors. These components were described as being similar to those utilized in submarines.

The captain stated he was uncertain whether the reactors were loaded with nuclear fuel at the time of the voyage. The ship was owned by Oboronlogistics, a state-linked entity. In October 2024, Oboronlogistics had stated that its vessels were licensed to carry nuclear material.
International Surveillance and Military Activity
Following the sinking, the wreckage of the Ursa Major became a focal point for international intelligence operations. Public flight data reveals that United States nuclear sniffer aircraft flew over the site of the sunken ship on two separate occasions within the past year.
a suspected Russian spy ship visited the wreckage one week after the initial sinking. According to a source familiar with the Spanish investigation, the Russian vessel set off four further explosions at the site.
The sequence of events has led to suggestions that the sinking may have been the result of a high-stakes intervention by a Western military. Such an operation would have been aimed at preventing Russia from providing an upgrade in nuclear technology to North Korea.
Official Responses and Investigations
The Spanish government maintained a posture of limited disclosure regarding the incident. After facing pressure from opposition lawmakers, the government released a statement on February 23.
In that statement, Spain confirmed the accounts provided by the Russian captain regarding the reactor components. However, the specific circumstances and causes that led the Ursa Major to sink remain unclear.
The investigation highlights the intersection of maritime security and the deepening military alliance between Moscow and Pyongyang. The transfer of nuclear-related technology would represent a significant escalation in the strategic partnership established between the two nations during the ongoing conflict in Ukraine.
