Georgia Boater Education Course


OPERATING IN RESTRICTED VISIBILITY

Whenever visibility is restricted on the water, such as when there is rain, mist, or heavy fog, you should slow your speed so that you have plenty of time to react if you encounter another vessel or a hazard you need to avoid.

Because your visibility is restricted, you'll need to use and listen for sound signals to help avoid collisions. The following sound signals are required in periods of restricted visibility.

WHEN VISIBILITY IS RESTRICTED BY FOG OR SMOKE, ADDITIONAL SOUND SIGNALS ARE REQUIRED:

VESSEL TYPE

SITUATION

SOUND REQUIREMENT

Power Vessel

Underway

Prolonged blast every 2 minutes

Sailing Vessel

Underway

Prolonged blast + two short blasts every 2 minutes

Power Vessel

Underway but not moving

Two prolonged blasts every 2 minutes

Any Vessel

Anchored

5 seconds of rapid bell ringing every minute

Any Vessel

Run aground

3 bell strokes + 5 seconds of rapid bell ringing + 3 bell strokes every minute

Anytime you hear one of these sound signals, you should immediately reduce your speed to the minimum that is required to maintain your course. The only exception is if you are at risk of a collision, in which case, you should take necessary action to avoid a collision.