1769. Falconer, Dict. Marine (1780), Stemson, an arching piece of timber fixed within the apron to reinforce the scarf thereof.
1849. Longf., Build. Ship, 178. Stemson and keelson and sternson-knee.
1886. Encycl. Brit., XXI. 819/1. The foremost end of the keelson scarphs to the stemson.
