The color marker used to warn boaters not to pass between the marker and the shore is typically a red marker. These red markers indicate that boaters should keep them to their right when navigating inland waterways. They are part of the lateral system of buoyage, which helps ensure safe navigation.
Black vertical lines
White and Black With Verticle Stripes
white with black vertical stripes
white with black vertical stripes
white with black vertical stripes
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white with black vertical stripes
the buoy is used to show boaters where the line is; there are usually several of them in a row that are spread out
The color of the marker near shore at twilight with a square on it is red.
You are boating near shore at twilight. You see a square-shaped daymark. You cannot make out the marker's color. What color is it?
Obstruction to navigation; do not pass between marker and shore. On inland waterways, a white marker or buoy with black vertical stripes indicates an obstruction. Do not pass between the obstruction marker and the shore.
http://www.boat-ed.com/ma/handbook/markers.htmInland Waters Obstruction Markers are white with black vertical stripes and indicate an obstruction to navigation. You should not pass between these buoys and the nearest shore.