bleeb
Contributor
I wonder if all fatalities are reported to DAN. I know of three fatalities under instruction within the last few years here in the Seattle area. One was a young woman in an OW class who disappeared coming back to shore. She was never found, so cause of death is unknown. Another occurred during a buddy separation, and I believe that was signed out as drowning. A third occurred here a week and a half ago (AOW class) and cause of death is so far unknown, but the accident involved a rapid ascent and buddy separation.
I've also wondered how good their numbers are. From what they've published, DAN relies on their own insurance and news reports. I get the impression that DAN membership only covers a tiny minority of divers, especially among infrequent/warm water vacation divers (<5% was once thrown around in one A&I thread), so news reports, public submissions or word of mouth would have to be their main sources of data. OTOH over the years, a few different people in the insurance industry have posted on ScubaBoard with suggestions that their actuarial estimates are of between 500 and 800 fatalities a year IIRC. There's a big difference between the two, so if would be interesting to find out which is closer to the truth.