The designer seeks the compromise that will fulfill its prime directive while he shuffles numerous other attributes as well, such as choosing boards for better upwind performance or keels for simplicity and freeing the accommodation. For pure speed, he will likely choose boards, very narrow hulls, very wide beam, low freeboard, high sail area and no bridge deck, but the boat will likely be wet, spartan and difficult to maneuver in tight quarters. For living in harbor with palatial accommodations, he designs wide hulls, extreme freeboard, very high cabin, and full bridge deck. But dont count on this boat giving significantly faster passages, or even greater speed over short courses, than many performance-oriented monohulls, although it may give brilliant bursts when reaching in moderate-to-stiff airs. The safest and fastest cats for ocean passages will feature moderate freeboards, high underwing clearance, low bridge-deck cabin height and moderately broad beam.