What is the main consideration for all vessels in sight of one another according to the COLREGs?

The primary consideration for all vessels in sight of one another according to the COLREGs is the avoidance of a collision. This principle is central to the regulations, which are designed to ensure the safety of navigation and the protection of life at sea. When vessels are in sight of each other, they have a responsibility to take all necessary measures to prevent any collisions from occurring.

The COLREGs outline specific rules and actions that vessels must follow when they encounter one another, including determining the appropriate course of action to avoid a collision based on factors such as relative motion and proximity. This focus on collision avoidance is crucial in maintaining safe maritime traffic and preventing accidents, which can lead to significant hazards, including injury and environmental damage.

While the size, intention, and type of the vessels may influence navigation decisions and strategies, the overarching goal remains clear: vessels must prioritize actions that prevent collisions above all else when they are aware of each other's presence.