West Lothian Sub Aqua Club
Scotland
DSMB Use.

1. The Delayed Surface Marker Buoy ( DSMB) should have a length of line approx 8 metres long attached with a small weight on the end of this line. The whole thing is rolled up and kept in the BC pocket.
2. Ascend to 5m.
3. Take out the DSMB and let the line unwind, the weight will keep the line vertical and not drifting around.
4. Gently inflate the DSMB with your octopus, and let it rise to the surface.
5. Complete your safety stop, holding the line lightly in your hand.
6. Ascend the line after the safety stop at the recommended rate.
7. On the surface fully inflate the DSMB if necessary.
8. Let the boat cover pick up the DSMB before you.

Now some don'ts

• Never attach the line/DSMB to yourself or your kit; better a lost DSMB than an accidental lift from depth or being towed behind a boat.

• Don't use your DSMB as a lifting bag from any depth.

If you have any corrections, comments or suggestions e-mail us.