How to deploy a Scuba Diving Surface Marker buoy. Names like safety sausage, safety buoy, SMB which stands for surface marker buoy are common. As a Scuba Diver it is a must to carry a safety surface marker buoy with you at all time to prevent accidents with boats on the surface. Where and when to Deploy the SMB The surface marker buoy in short SMB will be deployed underwater before you do your ascend and just before you start your 5m/3min safety stop. Whats it for? Boats and other marine vehicle will see the bright colored surface marker which … Continue reading Best Surface Marker 2021