New Delhi, June 16 -- The head of the world's biggest tanker operator warned that shipowners will not resume transit through the Strait of Hormuz for "weeks" until they are confident that the US-Iran deal is "material."

Jotaro Tamura, chief executive of Japan's Mitsui OSK Lines, told the Financial Times that many operators would wait before restarting crossings despite the US-Iran deal to reopen the strait.

"What will have to come in place is not just a simple agreement between the relevant countries, but it has to be material and translated into the real situations in the Strait of Hormuz, so that shipping lines can make themselves comfortable to go through," Mitsui OSK's Jotaro Tamura said in the interview published on Tuesday.

Tamur...