The primary function of a compass is to indicate _____

The primary function of a compass is to indicate the ship's heading. A compass provides real-time information about the direction in which the vessel's bow is pointed relative to magnetic north. This information is crucial for navigation, enabling mariners to orient their vessels and maintain a desired heading while on the water.

Unlike devices that measure speed or determine the ship's position—such as speed logs and GPS— the compass specifically focuses on directional orientation. Understanding the ship's heading allows navigators to make informed decisions about navigation, course corrections, and avoiding navigational hazards. While the heading is essential for plotting a course and ensuring safety, it does not directly provide information on speed or current position, which are measured with different navigational instruments.