The 42-foot Excess 13 slices through the water with asymmetrical hulls and a responsive, lightweight structure designed for bluewater cruising. Courtesy Excess Boat-show season is back with a boom.

Stephan Frauscher foresaw a wedding, but not anytime soon. His family’s eponymous shipyard, which launched its first wooden boat in 1927, had moved into electric boats by 1955. But they were slow, low ...