Here are the lighting requirements for boats at night in Missouri:
Navigation Lights
The required navigation lights differ depending on the type and size of your vessel. You must display the required navigation lights between sunset and sunrise and during periods of restricted visibility.
Motorboats When Underway
If less than 40 feet long, these vessels must exhibit the lights as shown in illustration 1. Remember, motorboats include sailboats operating under power. The required lights are:
Red and green sidelights visible from a distance of at least one mile away on a dark, clear night.
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 on a dark, clear night. The all-round white light (or the masthead light and sternlight) must be visible from all directions in a 360° circle.
The masthead light and sternlight may be combined as an all-round white light on vessels less than 39.4 feet long.
Unpowered Vessels When Underway
An alternative to the sidelights and sternlight is a combination red, green, and white light, which must be exhibited near the top of the mast.
Unpowered vessels are sailboats 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 at least two miles away (or if less than 40 feet long, at least one mile).
A sternlight visible from at least two miles away.
An alternative to the sidelights and sternlight is a combination red, green, and white light, which must be exhibited near the top of the mast.
If less than 23.0 feet long, these vessels should:
If practical, exhibit the same lights as required for unpowered vessels less than 65.6 feet in length.
If not practical, have on hand at least one lantern or flashlight shining a white light as shown in Figure 3.
Vessel operators should never leave shore without a flashlight. Even if you plan to return before dark, unforeseen developments might delay your return past nightfall.
All Vessels When Not Underway
All vessels are required to use a white light visible from all directions whenever they are anchored or moored away from dock between sunset and sunrise.
Missouri State Highway Patrol, Water Patrol Division
Online boating safety handbook last modified: May 23, 2011
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