What color light indicates the Port side of a vessel?

The color that indicates the port side of a vessel is red. This is an essential aspect of mariner navigation and communication. The red light on a vessel is used to visually identify its port side (the left side when facing the bow), while the opposing side, the starboard side, is indicated by a green light.

Understanding the color coding of navigation lights is critical for safe boating and avoiding collisions at night or in poor visibility conditions. When approaching another vessel, the color of its navigation lights allows a captain to determine the other vessel's direction and orientation, which is crucial for making safe navigational decisions.

In summary, knowing that the red light designates the port side helps mariners maintain awareness of their surroundings and adhere to maritime rules regarding right of way and navigation safety.