Antique Crosby Catboat Rudder from Nantucket. Circa 1905. This antique oak “barn door” catboat rudder belonged to author Paul Morris who received it from Charley Sayles, both of Nantucket. The rudder is the classic shape of the Crosby catboats built in Osterville, Cape Cod. White oak with bronze fittings. Stable and great looking! 30 inches high and 33 inches long.