Not certain I understand all the comments. The late 70's Gulf Star 44s have "wineglass" hulls with a deep keel that allows for a "standup" engine room and decent stability on choppy seas. As far as cruising at 6 knots and burning 2.1 gals. per hour - no - we have twin Perkins 634Ts. The Curly is most comfortable at about 8.5ks and burns 4 - 5 gals per hour at that speed.