The DiveAlert SMB (surface marker buoy) features Semi-Closed-Circuit (one-way valve) construction, which prevents air spill at the surface. Inflate on the surface to attract visual attention or redundant flotation. Inflate at depth to send up as a surface marker.



Solas reflective tape (Coast Guard approved) across the top of SMB creates better visibility day and night. An Over-Pressure Valve (OPV) prevents bursting and easy air dumping. 65 inches long x 8 inches wide = approximately 40 lbs. of lift. Nylon strap handle on the top allows for easy attachment of a light or slate. 400 Denier polyurethane coated nylon material.
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Dive Alert Surface Marker Buoy

By Dive Alert
  • DURABLE CONSTRUCTION: Made of 400 Denier polyurethane coated nylon, this SMB will last dive after dive without issue. The nylon strap on the top allows for attachment of a light or slate.

  • INFLATION: Inflation of the SMB can be done in any circumstance. You can inflate the DMB1 with a second stage regulator.




The DiveAlert SMB (surface marker buoy) features Semi-Closed-Circuit (one-way valve) construction, which prevents air spill at the surface. Inflate on the surface to attract visual attention or redundant flotation. Inflate at depth to send up as a surface marker.

Solas reflective tape (Coast Guard approved) across the top of SMB creates better visibility day and night. An Over-Pressure Valve (OPV) prevents bursting and easy air dumping. 65 inches long x 8 inches wide = approximately 40 lbs. of lift. Nylon strap handle on the top allows for easy attachment of a light or slate. 400 Denier polyurethane coated nylon material.


WARNING: This product can expose you to chemicals including lead, which is [are] known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.

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