It is far too soon to call of the concerns about whether the world’'s shipowners will comply with the the sulfur regulations that came into force at the beginning of the year in North Europe and off the coasts of North America, says Roger Strevens. He is the initiator and chairman of the major environmental collaboration, the Trident Alliance, which is fighting for more robust sulfur enforcement and whose members include large carriers such as Maersk Line, Scorpio and Torvald Klaveness.