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If less than 65.6 feet (20 meters) long, these vessels must exhibit the lights as shown in Figure 1. Remember, power-driven vessels include sailboats operating under engine power.

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 (12 meters) long, at least one mile away—on a dark, clear night.
  • An all-round white light (if vessel is less than 39.4 feet long) or both a masthead light and a sternlight. These lights must be visible from a distance of at least two miles away on a dark, clear night. The all-round white light (or the masthead light) must be at least 3.3 feet (one meter) higher than the sidelights.

No other lights (including docking lights) may be used which could be mistaken for or interfere with those required above.

Fig. 1: Navigation lights on power-driven vessels less than 65.6 feet