One type of marker is used to warn boaters not to pass between the marker and the shore. what color is this marker?

The color of marker that is used to warn boaters not to pass between the marker and the shore is: white with black vertical stripes

This marker is known as Inland Waters Obstruction Marker and used to indicate that there might be something in that area that will disturb your navigation processes, such as high stones that could destroy the machine or thick plants that will stucked in your turbine