<font color='#000F22'>What happens if you have to do stops deeper than 20m?[b said:Quote[/b] (wetlettuce @ July 07 2003,15:50)]I use a spool and only deploy my smb from 20 mtrs max. They are impractical from a deeper depth.
<font color='#0000FF'>Hi[b said:Quote[/b] (Gavin Yates @ July 07 2003,19:38)]What happens if you have to do stops deeper than 20m?
I too use a spool for bagging off shallow but also have a Manta reel for deeper DSMB deployment.
Whatever you choose, practice in shallow water and always be prepared to let it go if it does jam.
What are these things that can go wrong with a DSMB, and why are they more likely to happen below 20m? Please elaborate.[b said:Quote[/b] ]
1. I don't need a smb to hold a stop. I would be reluctant to deploy one until my last stop so I know my deco obligations have been met. Rapid ascent is not an option. Too many things can go wrong with an SMB.
You are assuming of course that you have found the shot, the line hasn't broke, and some muppet hasnt already lifted it. All have happened.[b said:Quote[/b] ]2. If deep stops are required and I am ocean diving then I would be going up on a shot line. And yes I would use a reel from the line to make sure I return up the shot.
How does a deep deployment increase chances of entanglement?[b said:Quote[/b] ]3. Deploying a SMB from deep increases chances of entanglement so even if I couldn't get back to the line I would rather drift and deploy my SMB from my last stop (although 20 metres would be my gas switch on 50% and so its quite a nice depth and makes the most of the partial pressure)
Sorry - can't agree at all (assuming you mean the DSMB is impractical from a deeper depth - not the spool). The safest place to send a DSMB up from is off the wreck - tie the reel on to the wreck and send up the DSMB. Also, the skipper knows where you are from the moment you start your ascent and drift off the wreck.[b said:Quote[/b] (wetlettuce @ July 07 2003,15:50)]I use a spool and only deploy my smb from 20 mtrs max. They are impractical from a deeper depth.
<font color='#0000FF'>Hi[b said:Quote[/b] (PressurE @ July 08 2003,14:54)]If you mean the greater length of line deployed has greater chance of coming into conact with another diver or piece of debris I can understand that.
Sounds to me like you're diving with a bunch of strokes. Why not find some buddies who can do it right?[b said:Quote[/b] ]Rapid ascent due to reg tangling in smb
SMB burst due to over inflation
Tangling with someone elses SMB
SMB not setup properly resulting in failed deployment
If my main DSMB doesn't deploy, i let it go and get the spare one out of my pocket (it's next to the yellow 'out of gas' blob) and clip it to my line laying reel. i thought that's what everybody did.[b said:Quote[/b] (wetlettuce @ July 08 2003,15:57)]The point about whether the shot is there or not is largely due to bad planning, but should I not be able to return to the shot then I would ascend without it, I don't think it is wise to rely on an smb for a safe ascent. What if you lose the shot and then your smb doesn't deploy? What do YOU do?