fnfalman
Contributor
As for switching to a BP/W to avoid this; is the buckle on your weight belt some kind of gaurantee that you will not lose your weights?
Dive Safe.
Nothing is 100% guaranteed, of course. While I can't speak for other BP/W since that I've only used Dive Rite BCs, but the ditchable inner pouches on the Dive Rite integrated weight pouches are secured to the main pouches by the squeeze-to-release fastex buckles in addition to the velcro strips on the flaps. And we can even further assume that Murphy's Laws had applied and everything that could have gone wrong with the equipment had gone wrong (i.e. fastex buckles broken and velcro strips all worn out), the inner pouches still wouldn't fall out unless you swim upside down.
On a jacket BC, when you swim horizontally, the weight pouches point vertically downward. If a lock comes undone, everything falls out. On the Dive Rite rig, when you swim horizontally, the pouches are in the horizontal position, so the weights wouldn't simply fall out due to gravity alone.
I've seen a lady who was swimming and her weight just fell off her jacket BC (don't know what brand and model). She started to rise quickly to the surface. I think that she was too surprised to quickly dump the air out of the BC and spread eagle to add more hydrodynamic drag to help with the rising rate. By the time I swam over, she already on the way up. The only thing I could do was to fetch her weight belt and went up and gave it to her at the surface. I put the pouch back in and she went down to finish her dive.