| Imported post
Mark
A few points...............
1.GUE, as a training, exploration and research organisation, doesn't *make* anything.
Those self inflating DSMB's are a bad idea for the following reasons:
1. They are too bulky
2. The valve can be opened slightly, or can leak whilst stowed, leading to a potential uncontrolled ascent
3. People often *forget* to fill them
4. The small cylinders are exempt from routine tests, leading to neglect and potential failure.
5. Cracking the valve and *letting go* produces far too much lift, leading to a potential uncontrolled ascent if a reel should jam.
6. They're expensive!
A closed lift bag/SMB can be inflated mid-water, at depth or on the surface, without these potential problems. Guess who makes these closed lift bags/SMB's? yes that's right....Halcyon.
Alternatively, it's a simple matter to make one yourself, using any kind of closed SMB. Much simpler, safer and smaller.
Best regards
Bob |