KODIAK, Alaska - Petty Officer 1st Class Jeffry Crews (left) and Lt. Matthew Zinn (right), both of Marine Safety Detachment Kodiak, observe two Siva Emerald engineers as they test the oily water separator in the vessel's engine space during a port state control exam in conducted at the dock in Kodiak May 21, 2012. The Coast Guard conducts port state control exams aboard hundereds of foreign flagged vessels operating in U.S. waters in ports around the nation each year. U.S. Coast Guard photo by Petty Officer 3rd Class Jonathan Lally.
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