What is the minimum range of a masthead light for vessels ranging from 12 to less than 20 meters?

The minimum range of a masthead light for vessels measuring from 12 to less than 20 meters is indeed 3 miles. This requirement is established under the COLREGs, specifically in the section pertaining to the visibility of navigation lights. The COLREGs dictate that the masthead light, which is an essential navigation light indicating the presence and heading of the vessel, needs to be visible from a minimum distance of 3 nautical miles, ensuring that other vessels can see its signal in enough time to assess the situation and make navigational decisions.

This standard is important for safety at sea, especially for vessels in close proximity to one another, as it helps to prevent collisions and ensure the safe movement of watercraft in shared waterways. The specification of 3 miles is one of several defined ranges for different types of vessels and their respective sizes, reflecting the increasing needs for visibility as the size and scale of vessels change.