About the Study Guide

You are looking at a preview of what’s in the timed Montana Boat Ed Course. Feel free to look around, but you’ll need to register to begin progress toward getting your Montana Boater Education Certificate.

Learn More Register for the Course

Scuba diver

Motorboat operators must not operate within 200 feet of a displayed “diver down” flag. If a vessel must approach this warning flag, it must do so at a “no wake speed.” The “diver down” flags are:

Divers Flag

Divers Flag:A rectangular red flag attached to a vessel, float, or buoy with a white diagonal stripe if on state waters.

Alfa Flag

Alfa Flag:A blue and white International Code Flag A (or Alfa flag), at least 3.3 feet (one meter) high and visible from all directions, must be displayed on vessels on federally-controlled waters. This flag indicates that a vessel is involved in a diving activity.

Scuba divers and snorkelers should not place a flag in an area already occupied by other boaters or where their diving operation will impede the normal flow of waterway traffic. Divers also should follow all of the water safety rules themselves.