Navigation lights are essential for maritime safety, indicating a vessel’s status and movements, especially at night or in conditions of reduced visibility. Specific configurations of these lights communicate particular circumstances. For instance, a vessel displaying red over red lights signifies a condition where it is unable to maneuver as required by the International Regulations for Preventing Collisions at Sea (COLREGS). This informs other vessels that the ship is experiencing a malfunction or circumstance preventing it from altering its course or speed effectively, such as a steering failure. Mariners must recognize these signals to avoid collisions and maintain safe navigation practices.
The proper use and recognition of these visual signals have profound implications for maritime safety, preventing accidents, protecting the environment, and ensuring the efficient flow of maritime traffic. Historically, visual signals have been used for centuries as a primary means of communication between vessels. Modern conventions, such as COLREGS, have codified these signals to ensure consistent interpretation across different nationalities and maritime jurisdictions. Ignoring or misinterpreting these signals can lead to serious consequences, including collisions, groundings, and even loss of life.