All unpowered sailing watercraft must exhibit sidelights and a stern light when underway.
If less than 65 feet long, these watercraft must exhibit the lights.
- These watercraft can combine the required sidelights and stern light by carrying one lantern at or near the top of the mast where it can best be seen.
- Additionally, these watercraft may exhibit two all-around lights at or near the top of the mast in a vertical line. In this arrangement, the top light should be red and the lower light should be green. These lights cannot be shown if the combined lantern is used.
Unpowered vessels are sailing vessels or vessels that are paddled, poled, or rowed.
If less than 65.6 feet long, these vessels must exhibit the lights as shown in Figure 2. The required lights are:
- Red and green sidelights visible from a distance of at least two miles away—or if less than 39.4 feet long, at least one mile away—on a dark, clear night.
- A sternlight visible from a distance of at least two miles away.