What is the primary function of an anchor?

The primary function of an anchor is to keep a vessel in a fixed position in the water. When a boat drops anchor, it allows the vessel to remain stable and secured in place, preventing it from drifting due to water currents or wind. This is particularly important when a vessel is at rest, such as when fishing, swimming, or waiting for other boats.

Anchors work by embedding themselves into the seabed, creating resistance against the forces that would otherwise push the vessel away from its desired position. The effectiveness of an anchor depends on factors like its weight, shape, and the type of seabed it interacts with. Maintaining a fixed position is crucial for safety and operational effectiveness in various marine activities.

The other options do not describe the primary role of an anchor. For instance, while power comes from the motor of the vessel and signaling typically involves lights or flags, these are separate functions not related to anchoring. Navigation assistance may be facilitated by various tools and instruments, but an anchor's unique purpose is to secure the vessel in one spot.