How does Rule 25 address the display of anchor lights?

Rule 25 of the COLREGs specifically pertains to the display of lights for vessels at anchor. According to this rule, any vessel anchored shall exhibit an all-round white light that is visible from all directions. This regulation is crucial for ensuring that other vessels can easily identify an anchored vessel, which is essential for maintaining safe navigation and preventing collisions, especially in crowded waters or at night.

The requirement for an all-round white light serves a specific purpose: to clearly communicate the presence of the vessel to approaching ships. This design standard minimizes the risk of accidents in situations where a vessel at anchor could otherwise blend into the surroundings or go unnoticed.

Other options would not adhere to the safety and visibility standards established by the COLREGs. Allowing discretion to display any color lights could create confusion and misinterpretation among navigating vessels. Mandating that lights be turned off to save energy would contradict the need for visibility when anchored. Similarly, suggesting that only one light should be displayed could be misleading, as the all-round white light must indeed be present to meet the regulatory requirements for anchored vessels. Thus, the clarity provided by Rule 25 in requiring an all-round white light is fundamental for maritime safety.