Mooring of vessels is one of the most dangerous operations in maritime industry since mooring operations pose high accident risk. Many of them have occurred during mooring operations which may cause severe consequences such as fatalities, injuries and financial loss. The contributory factors consist of lack of mooring equipment maintenance, untrained and inexperienced personnel, equipment failures, available weather conditions, poor communication, safety procedure errors, risk assessment failure in general (Kuzu and Arslan, 2017). The catastrophic consequences may occur in case of a mooring failure at tanker terminals. Hence, risk levels of mooring operations at tanker ship terminals are higher when compared to other terminals.