What is the term for the movement of a ship when the bow moves to port and starboard?

The term for the movement of a ship when the bow moves to port and starboard is yaw. Yaw refers to the side-to-side motion of a vessel's bow, which affects its heading relative to a straight line of travel. This motion is primarily caused by the effects of wind, currents, or steering inputs.

Understanding yaw is crucial because it influences how a ship navigates and maneuvers in different sea conditions. Being familiar with yaw assists mariners in maintaining course and making necessary adjustments during operations. Additionally, proper management of yaw can enhance navigational safety and efficiency.