Protecting the Turkish Straits from Maritime Terrorism: A Scheme to Impede Propeller Efficiency [open pdf - 10MB]
From the thesis abstract: "The protection of the Turkish Straits against maritime terrorism is an important security problem that must be solved because the straits are highly vulnerable to terrorist attacks. The main purpose of this research is to increase the security of the Turkish Straits against maritime terrorism by designing an underwater system that can stop a terrorist ship by impeding its propeller efficiency. The underwater system wraps ropes and nets around the propeller and its hub, decreasing the propeller efficiency. First, the most probable scenario from the point of view of a terrorist organization is determined. Second, all the existing and some non-existent methods to prevent this scenario are analyzed. Finally, an underwater system is designed to impede the propeller efficiency of a ship by wrapping ropes and nets around the propeller and its hub in order to stop the ship before entering the strait. Experimental results of previous researchers and computational methods are used to demonstrate the loss of propeller efficiency after wrapping."
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