Russian ship with nuclear reactor for North Korea torpedoed in 2024

In December 2024, the Russian cargo ship Ursa Major sank in international waters near Cartagena, Spain, after sustaining hull damage consistent with an external attack, likely from a supercavitating torpedo. The vessel, part of Russia’s “ghost fleet,” was secretly transporting undeclared nuclear reactor components—specifically casings for two VM-4SG nuclear reactors—believed to be destined for North Korea’s port city of Rason. Spanish authorities uncovered discrepancies between the declared cargo and the actual contents, noting the presence of heavy cranes aboard the ship, which would facilitate offloading at Rason, a port connected to Russia by rail but with limited handling capacity. The ship’s unusual route from St. Petersburg to Vladivostok via the Mediterranean further raised suspicions, as overland transport of such heavy equipment would have been impractical. Spanish investigators recorded underwater shockwaves consistent with an external explosion and found a 50 by 50 cm hole in the ship’s starboard hull with