Many may consider it presumptuous of the guinea-pig to voice an opinion on the experiment to which he is to be subjected. I hope this is not so, because I view the shipowner not as the guinea-pig but as the prospective customer for any advances which are made in marine traffic engineering technology. The shipowners of the world are undoubtedly going to pay directly or indirectly for any traffic regulation schemes which are set up. It is certainly not part of my theme that the customer is always right—he may not know what he wants until he has been subjected to a promotional advertising campaign and he may be excessively gullible in swallowing such propaganda—but there is possibly value in the customer saying what he thinks he wants and airing doubts he may have before he is subjected to these pressures. I therefore welcome the opportunity to give a shipowner's view on traffic regulation.