What does the term "wake" imply in relation to a ship's movement?

The term "wake" refers specifically to the disturbed water that is left behind a vessel as it moves through a body of water. When a ship travels, it displaces water, creating waves and turbulence in its path. This disturbed water is visible and can vary in appearance depending on the speed and size of the vessel, as well as the conditions of the water. The wake is an important concept in navigation and can indicate the ship's trajectory and speed, which is why it is critical for understanding a vessel's movement and its impact on the surrounding environment.

The other options relate to different aspects of maritime terminology, such as speed, distance, and anchorage, but they do not accurately describe what a wake is. The wake is not about how fast the ship is going or how far it has traveled; it is solely concerned with the pattern of water left behind as the ship progresses through it. Therefore, the definition provided in the correct answer precisely captures the essence of what "wake" means in relation to a ship's movement.