1. Stern post rudder

2. WHAT? It was a invention because they always used it to steer A rudder is a device used to steer a ship, boat, submarine, hovercraft, aircraft, or other conveyance that moves through a medium

3. WHEN 1050 B.C. Zhou Dynasty

4. IMPORTANCE It allowed ships to sail into the wind. Because we use ships today and so we don’t have to use row boats, so thats why we have rudders.

5. Multiple Choice Question What was the significance of the sternpost rudder in trade and exploration? A. It allowed ships to sail faster. B. It allowed ships to be steered. C. It allowed ships to travel longer distances. D. It allowed ships to travel in deeper water.