The stern-mounted steering device represents a crucial innovation in maritime technology. Functioning as a vertically hinged panel at the rear of a vessel, its manipulation allowed for more precise directional control compared to earlier steering methods, such as oars or side-mounted paddles. A notable example is its adoption in Chinese shipbuilding, where its use predates its widespread implementation in other parts of the world.
This navigational enhancement offered several advantages. It facilitated more efficient sailing, especially in varied wind conditions and narrow waterways. Improved maneuverability contributed to safer voyages and increased the potential for long-distance trade and exploration. Historically, its implementation impacted naval warfare, enabling fleets to execute complex formations and tactics with greater accuracy.