Rapid technological progress in the field of autonomous surface ships (MASS) has outpaced international
regulations concerning the safety of their operation and various research centers and classification societies,
which independently conduct work on requirements of MASS safety. The implementation of “remote” risk
management during MASS voyages, with the support of remote operations center (ROC) operators, is generally
recognized as key to safety in MASS operations. This paper presents issues related to the operation of MASS
in the context of long-distance voyage planning, taking into account the risk management process. The factors
initiating hazards in MASS operation are described with the background of current requirements for the crewed
ships. The voyage plan and route selection are presented using the example of a bulk carrier sailing from Gdynia to Miami in the winter season. A MASS casualty accident probability model related to the hazards occurring
at individual stages of the ship’s voyage, based on the Poisson distribution, is proposed.