Could I take your name and number, please? http://myvidster.fun/ my vidster First, there are the economic costs of these attacks. Although the number of vessels actually hijacked in the Gulf of Aden and the western Indian Ocean has been decreasing, the number at risk is high. It is estimated that 30,000 tankers and cargo vessels transit these waters annually. Since 2008, the area has been declared a “war risk” zone subject to special insurance premiums, sometimes more than $150,000 per ship per voyage. A 2010 study estimated that marauders imposed $7 billion to $12 billion in annual losses on the global economy.