Sanctions and severance of international ties reduced the 4% share of marine economy from Iran’s gross domestic product to 2%, according to managing director of Iran Marine Fund, Mehrdad Mozaffari. He called on investors and manufacturers to take advantage of customs-related incentives offered in free trade zones, such as tax exemptions or absence of trade barriers, to help boost the share of marine economy in GDP. Iran’s free trade zones are mostly located near ports.