Required Lights: Power-Driven Vessels When Underway

If less than 26 feet long, the required lights for power-driven vessels are:

Red and green sidelights visible from a distance of at least one mile away.
An all-round white light or both a masthead light and a sternlight. These lights must be visible from a distance of at least two miles away. The all-round white light (or the masthead light) must be higher than the sidelights.

Figure 1: Navigation lights on power-driven vessels (four different kinds of vessels)

If 26 feet long or longer, the required lights for power-driven vessels are:

Red and green sidelights visible from a distance of at least one mile away.
A masthead light and a sternlight visible from a distance of at least two miles away. The masthead light must be higher than the sidelights.

Unit 4 of 6
Topic 9 of 19
Page 2 of 5

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