46 CFR § 147.100
Radioactive materials
April 15, 2021
(a) Radioactive materials must not be brought on board, used in any manner, or stored on the vessel, unless the use of the materials is authorized by a current license issued by the Nuclear Regulatory Commission (NRC) under 10 CFR parts 30 and 34.
(b) Stowage of radioactive materials must conform to the requirements of the NRC license.