Examples from the Web for sternpost
Outside, copper shows wear and tear more quickly near the stem and sternpost and along the water-line.
The ship's in splendid condition; there's next to nothing wrong with her but the garboard streak and the sternpost.The Wrecker|Robert Louis Stevenson and Lloyd Osbourne
In another house was the sternpost of a vessel, probably part of a wreck driven across from the coast of Africa.Notable Voyagers|W.H.G. Kingston and Henry Frith
After 1854 it was taken on deck from stem-head to sternpost, and certain deductions made for rake.
Her frames were of bent elm, the sternpost and knees of tea-tree, while her keel was of tallow-wood.Yachting Vol. 2|Various.