Abstract:Greater heed has been paid to the matter of maritime security since the tragedy in the U.S.A. on 11 September 2001. A number of measures have been put into practice by ports to enhance security. More regulations and measures sometimes imply an increased probability of influencing port operations. Thus, the quality of the port security process regulated by measures is becoming essential. In this paper, the quality control in the port security process is demonstrated using the Six Sigma concept. It is concluded that it is crucial to distinguish each step of a security process clearly from the outset, furthermore, gathering quantitative data at each stage is the first priority.