Sternpost Rudder

Timeline

1. 1551–1555Shipyards of the Iberian Peninsula · Iberian PeninsulaTo suit long Atlantic voyages, European shipbuilders enlarged rudder area and improved gudgeon-and-pintle bearing structures, enabling galleons to maintain a controllable course even under strong crosswinds and reducing the risk of capsizing and yawing.
2. 1556–1560Southeast China coast and the Strait of Malacca · Southeast AsiaMing-dynasty Fuchuan ships and Southeast Asian merchant vessels continued to steer with sternpost rudders, relying on the rudder blade for harbor entry and exit and channel turns just as European ships did, demonstrating the technology's long continuity in global shipping.