👉 The term "rudderstock" refers to a type of mechanical device that is used to control and direct the movement of an object, such as a boat or a ship. It is typically made up of two metal rings that are connected by a chain or cable, which can be adjusted to move the object forward or backward in the direction it is directed. The rudderstock has been an important part of navigation for centuries and is often used on ships, boats, and other水上交通工具。