Author(s):
1. Sonja Ketin, Faculty of Maritime Academic Studies, Belgrade, Belgrade 2- University of Defense of Belgrade, Milit, Serbia
2. Marko Andrejic, Faculty of Maritime Academic Studies, Belgrade, Belgrade 2- University of Defense of Belgrade, Milit, Serbia
3. Mitar Lutovac, FM Herceg Novi , Montenegro
4. Rade Biočanin, Državni univerzitet u Novom Pazaru, Novi Pazar, Serbia