The shipowner is the customer and his views are coloured by whether what he buys, and ultimately is going to pay for, is what he wants. It is difficult to reconcile even the conflicting interests of various divisions of a single company for, say, a Dover Strait scheme. The division may operate passenger ships, cross-Channel ferries, deep-draught tankers or conventional cargo ships. The main product that shipowners are buying is increased safety, with a marginal bonus in some types of traffic regulation of possibly saving time in conditions of poor visibility, provided the scheme is cost effective. Most shipowners recognize a moral responsibility for ensuring the best possible conditions for safe operation of their ships and for avoidance of environmental pollution.