Thanks for posting this. This report is a good lesson on how accidents are not always preceded by obvious alarms.
Yes she was anxious at the start of the dive but she seemed calm during the dive. Yes she used more air than the instructor but I know many divers that use more air than I do.
Trying to annalize if the diver needed to be accompanied to the surface assumes that it is always possible to assess the risk level. I believe that it is not always possible to do so and that safe diving practices should always be followed.
It is my opinion that accidents are frequently an accumulation of little mistakes rather than one big obvious one. Consequently it is unrealistic for anyone to think that they will always see an accident coming and it should be understood that even small deviations from safe diving practices when added to the sum total of previous mistakes can create dangerous situations.
I sent the following e-mail to divers that I know.
Conisider these questions and ask yourself. Would you allow your buddy to ascend alone allowing you to continue another 15 minutes of your dive or would you abort the dive.
1. The buddy has 25 years experience but took a break from diving for a while.
2. The buddy recently completed a PADI basic open water course to upgrade skills.
3. The buddy has not indicated any health problems.
4. The buddy was a bit anxious on the surface but once under water communicated well and seemed calm.
5. The buddy was using air faster than you.
6. The buddy indicated that they were down to 1000 psi and wanted to surface from about 60 feet.
7. Visibility was at about 50 feet and the buddy indicated they were willing to surface alone.
Continue the dive or abort?
http://www.courts.sa.gov.au/courts/...ton.finding.htm