Table 2 Crude rates of mishaps in the written, memorized, and no-checklist group participants
| Â | No. of mishaps | Crude rates per 100 dives | ||
|---|---|---|---|---|
| Â | Written checklist (59 dives) | Memorized checklist (623 dives) | No checklist (158 dives) | |
Major mishaps | 94 | 5.1 | 11.9 | 10.8 |
Rapid ascent | 37 | 0.0 | 4.8 | 4.4 |
Lost buddy contact | 22 | 3.4 | 2.7 | 1.6 |
Entanglement/ entrapment | 9 | 0.0 | 1.1 | 1.3 |
Low to out of air | 9 | 0.0 | 1.1 | 1.3 |
Free Ascent | 8 | 0.0 | 1.1 | 0.6 |
Spontaneous inflation | 5 | 0.0 | 0.8 | 0.0 |
Buddy breathing | 2 | 1.7 | 0.0 | 0.6 |
2nd stage regulator malfunction | 2 | 0.0 | 0.2 | 0.6 |
Content hose rupture | 0 | 0.0 | 0.0 | 0.0 |
Free flowing 2nd stage | 0 | 0.0 | 0.0 | 0.0 |
Minor mishaps | 153 | 13.6 | 18.0 | 20.9 |
Changed buoyancy due to dive suit | 29 | 3.4 | 3.0 | 5.1 |
Equalization problems | 26 | 0.0 | 3.2 | 3.8 |
Mask squeeze | 23 | 0.0 | 2.7 | 3.8 |
Mask flooded/ Dislodged/ Panic | 17 | 1.7 | 2.4 | 0.6 |
O-ring problem | 9 | 3.4 | 0.8 | 1.3 |
Buddy mismatch | 7 | 1.7 | 0.8 | 0.6 |
Unable to clear mask | 6 | 0.0 | 0.6 | 1.3 |
Fins lost/ loose/ dislodged | 6 | 0.0 | 0.8 | 0.6 |
Safety Stop missed | 6 | 0.0 | 0.8 | 0.6 |
Leaking BCD | 6 | 1.7 | 0.8 | 0.0 |
Air used frequently to maintain buoyancy | 5 | 0.0 | 0.3 | 1.9 |
Air not turned on/ not fully on | 3 | 0.0 | 0.5 | 0.0 |
Computer stopped working | 3 | 1.7 | 0.3 | 0.0 |
Weights belt/ weights dropped | 2 | 0.0 | 0.3 | 0.0 |
Fins strap broke | 2 | 0.0 | 0.2 | 0.6 |
Multiple ascents | 2 | 0.0 | 0.3 | 0.0 |
Octopus reg snagged | 1 | 0.0 | 0.0 | 0.6 |
Unable to release weights | 0 | 0.0 | 0.0 | 0.0 |
Mask strap broke | 0 | 0.0 | 0.0 | 0.0 |
All mishaps | 247 | 18.6 | 29.9 | 31.6 |