The results of applying safety analysis framework with respect topotential consequences of accidents involving unmanned ship arepresented inFig. 7. In the course of the analysis it was evaluatedhow strongly the accident's outcome depended on crewmembers’presence on board in three phases of consequence mitigation, namely:situation assessment, decision-making and damage control, as depictedin Fig. 2. On the other hand, we acknowledge that the greatestadvantage of introducing unmanned vessels would be elimination offatalities, since no crewmember would be exposed to hazards on boarda ship in danger. In the following sections we discuss the factorsinfluencing the extent of damage in each of the accidents’categories.