June 16 (Reuters) - Shipowners will not resume transit through the Strait of Hormuz for weeks until they are confident that the U.S.-Iran deal is "material", the chief executive of Japan's Mitsui O.S.K. Lines told the Financial Times in an interview published on Tuesday. The Iran war that began on February 28 with U.S.-Israeli strikes largely stopped shipping through the transit route for around a fifth of the world's oil and liquefied natural gas supply, along with products such as aluminium and urea.