The Spare Air is small enough to fit in the palm of your hand, yet large enough to get you to safely to the surface in most out-of-air emergencies

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SCUBADiving.com Out of Air Survey - 2003

1. Do you ever worry about running out of air?
27% (366) No, never
66% (885) Yes, occasionally
7% (93) Yes, often
2. Have you ever run out of air or come close to running out of air during a dive?
45% (598) No, never
44% (588) Yes, once
12% (159) Yes, more than once
3. If you have ever run out of air or come close to running out of air, why do you think this happened (please select all that apply).
10% (136) Didn't pay attention to gauge
10% (128) Equipment failure (i.e. blown o-ring)
35% (469) Used much more air than planned (due to depth, current, cold, etc.)
28% (375) None of the above
4. Have you ever been diving with a buddy who ran out of air?
67% (892) No, never
24% (323) Yes, once
10% (127) Yes, more than once
5. If you have ever thought your were out of air, what was your first reaction?
2% (26) Immediate rapid ascent
25% (334) Located your buddy and shared air
6% (80) Switched to alternate air source
17% (225) Ascended to the surface slowly
46% (616) I have never been in that situation
6. On average, how close do you normally stay to your buddy during the course of a dive?
11% (146) Within 5 feet
47% (623) 6-10 feet
34% (457) 11-20 feet
8% (113) More than 20 feet
7. Approximately how often do you check your tank pressure during dives?
2% (33) I never stop staring at my gauges
62% (834) Once every 2 to 5 minutes
32% (426) Once every 6 to 10 minutes
4% (49) Less frequently than every 10 minutes
0% (1) Never
8. What is the average amount of air left in your tank when you start your safety stop?
1% (15) Less than 250 psi
27% (366) 250 - 500 psi
71% (954) 500 - 1000 psi
9. What alternate air sources do you normally dive with? (please select all that apply).
76% (1009) Octopus
27% (365) Integrated inflator and regulator
16% (218) Independent air source (i.e. pony bottle/Spare Air)
10. What other backup or safety equipment do you regularly carry either on a dive or in your gear bag? (please select all that apply).
78% (1041) Whistle/power whistle
57% (761) Safety sausage
17% (225) Independent air source (i.e. pony bottle/Spare Air)
14% (182) Signaling mirror
19% (259) Spare mask (taken on a dive)
17% (227) Backup computer (taken on a dive)
28% (378) Duplicate gear (i.e. extra regulator, computer, etc. left on dive boat)
89% (1189) Cutting tool (i.e. knife, shears, line cutter)
70% (941) Spare parts kit
52% (690) First aid kit
11. How would you describe your current level of ability and skills as a SCUBA diver?
13% (172) Beginner
35% (463) Intermediate
40% (538) Advanced
13% (168) Expert