how many cargo ships are nuclear
Germany's nuclear ship NS Otto hahn at sea. The NS Otto Hahn's reactor is removed during decommissioning. The German-built NS Otto Hahn is one of only four nuclear powered cargo vessels ever built (the others are the NS Savannah, the Russian container ship Sevmorput, and the Japanese NS Mutsu). Configured to carry passengers and ore, the NS Otto Hahn was powered by a single 38 MW reactor which first achieved criticality in 1968.