Factor X, a sloop-rigged Winslow Four-Sum, designed by Ralph E. Winslow that was profiled in Rudder magazine in 1944 and built at the Davies yard on City Island in 1946. Completely rebuilt by New England Shipwright in the 1990s using plans on file at Mystic Seaport. Maintained to high standards, and under the same owner for the past 35 years.
