By A Mystery Man Writer
Surface marker buoy - Wikipedia
What is a Surface Marker Buoy? - Guide to DSMBs and SMBs
What is a Surface Marker Buoy? - Guide to DSMBs and SMBs
Surface Marker Buoy (aka SMB or DSMB) - SubGravity
5FT Diving Surface Marker Buoy (SMB), Signal Tube Safety Sausage with 100FT Aluminum Finger Spool Reel and Double Ended Hook Clip for Underwater Scuba Diving Snorkeling (5FT Yellow SMB+Black Reel)
The latest version of the SubGravity SMBs, these new Gen 2 SMBs feature dual bungee retaining loops for maximum security when stowed.
Surface Marker Buoy (aka SMB or DSMB)