sternpost

The junk's square stem must be what led to the early introduction of the sternpost rudder, rather than the oar to the side of the stern that acted as a rudder in classic Mediterranean ships.

If the lateen sail originated in the east, the sternpost rudder was invented in the north, and was probably developed on the coast of Flanders or England by local boatbuilders in the 12th century, quite independently of its previous development by the Chinese a thousand years before.

It was steered with an oar to the right-hand side of the stern, common in all European ships until the introduction of the sternpost rudder in the 12th century, giving rise to the name "starboard," derived from "steer-board," for the right-hand side of the ship facing the prow.

Junks were the first ships to use a sternpost rudder, and many now use an outboard motor.

.into ribs or timbers that curve up from keel to the chine along the waterline to the upper margin of the hull or the sheer...and into a pointed sternpost at the rear of a canoe or a more-or-less flat transom of a powerboat.

The sternpost is the equivalent at the back for this canoe-sterned craft.

Epoxy stem and sternpost to one side (or stem to one side panel and the sternpost to the other).

Remove the bottom sheet and epoxy ends of sides to stem and sternpost.