152. The carrier shall ensure that a package or overpack with a surface dose rate greater than 2 mSv/h is not transported in a vessel except under special arrangement or exclusive use.
153. The transport of consignments by means of a special use vessel need not comply with the requirement of Article 123 if:
(a) there is a radiation protection programme for the shipment approved by the NRRC or the competent authority of the flag state of the vessel and, if so required, by the competent authority at each port of call;
(b) the stowage arrangement has been predetermined for the whole voyage, including any consignment to be loaded at ports of call en route; and
(c) the loading, carriage and unloading of the consignment are supervised by persons qualified in the transport of radioactive material.