What is the purpose of a sea anchor?

The purpose of a sea anchor is primarily to prevent broaching, which occurs when a boat's bow swings sideways to the waves, risking capsizing. A sea anchor is deployed into the water from the bow of a vessel, creating drag and stabilizing the boat in rough seas. This stabilizing effect allows the bow to face into the waves, reducing the risk of loss of control and maintaining the vessel's orientation despite turbulent conditions.

While securing a vessel during storms is an essential function, a sea anchor's primary role is its ability to stop unwanted movement caused by the waves, thus preventing broaching. In contrast, a sea anchor does not serve as a navigation tool or act as a sail, which are different functions tied to maneuvering or propulsion. Understanding this function of the sea anchor is crucial for maintaining safety and control while at sea, especially in stormy weather.