Despite to many conventions and regulations in force against sea piracy, the problem still threatens the security of the world sea transportations by affecting both the ship and the crew on board. Privateering and piracy, which are widely occurred, were analyzed within the context of the current study. The factors causing piracy incidents were first defined to propose practical and applicable solutions for the problem. The expert opinions on criteria set were analyzed by applying fuzzy AHP and fuzzy TOPSIS techniques to determine the significance level and ranking the alternatives. Among all criteria the "economic insufficiency (C6)" was received the maximum score as the most effective cause of the sea piracy whereas the least effective factor was decided as "geographic location of the canals and straits that are in risky regions of the world (Cl)". While the most important alternative to offer a solution to this problem was established as "providing support local and regional authority in risky regions (A5)", the least important alternative was confirmed as "providing rehabilitations to individuals or groups" which have tendency toward privateering actions (A6).