With tall, slab sides encasing a multi-deck configuration, the pure car/truck carrier (PCTC) has a characteristically high windage factor, influencing course-keeping, maneuvering and fuel usage. A new series of PCTCs at the top end of the capacity range denotes a particular endeavor by Japanese shipbuilders to raise design performance through close attention to the aerodynamic properties of such vessels. Recently delivered into the long-haul vehicle trade patterns maintained by Mitsui OSK Lines (MOL), the 57,000-gt Courageous Ace embodies a refined form intended to lessen wind resistance and enhance fuel efficiency. Courageous Ace can load 6,400 automobiles of 'standard' size throughout its 13 cargo decks, and is the first of a trio from Minami Nippon Shipbuilding's Oita yard.