Scientific diving, at the scale of a programme.
Plan for larger teams, bring more data back from the water, and manage the people doing the diving, in one place.
Three pairs, two entry points, one plan.
Science teams go in where the work is. Each pair plans its own dive and enters on its own time, 15 minutes apart, and the objectives sit on the clock where they happen: six coral cores at 24 m, a 50 m photo transect and the temperature loggers on the wall. The dive supervisor sees who is in the water and when each pair is due out.
- Divers
- 6
- Entry points
- 2
- Objectives
- 3
- Hand-offs
- 0
Planned with DiveLogic at GF 30/70, and GF 50/70 for the 40 m pair. Names are examples.
More data from every dive.
Dives come back from every diver's computer already matched to their plans, so a programme builds a record of how its diving is actually done.
- Recorded
- Profile, gases, switches and events from each diver’s computer.
- Compared
- Every dive against its plan: depth, descent, ascent rate and stops.
- Graded
- Decompression stress for every dive, with what contributed to it.
76/ 100Adherence
- Depth deviation
- 1.5 m
- Runtime vs plan
- -5.1 min
- Descent vs plan
- +0.8 min
- Peak ascent
- 11 m/min
- Ascent was fast in placesYour ascent peaked near 11 m/min. Keeping ascents to ~9-10 m/min gives tissues time to off-gas.
- Surfaced earlier than the planThe dive was 5 min shorter than planned: check that no decompression was cut.
- 6 m stop was shortPlanned 17 min at 6 m, but about 14 min was recorded there.
| Stop | Planned | Held |
|---|---|---|
| 24 m | 1 min | 1.75 min |
| 18 m | 1 min | 1.75 min |
| 12 m | 2 min | 3 min |
| 9 m | 4 min | 5 min |
| 6 m | 17 min | 14 min · short |
A few factors added decompression stress on this dive. The notes below are where the margin is.
Example review. For education and reflection, not a diagnosis.
Models side by side, for the record.
Bühlmann at any gradient factors, and Thalmann in seven parameter sets, planned on the same dive and compared.
| Plan | Runtime | First stop | CNS | Time to surface |
|---|---|---|---|---|
| Bühlmann ZHL-16C, GF 30/70 | 67min | 24m | 34% | 39min |
| Bühlmann ZHL-16C, GF 50/70 | 64min | 18m | 34% | 37min |
| Thalmann E-L, XVal-He 2.3% | 44min | 12m | 20% | 17min |
Each dive with EAN50 and EAN80 for decompression, in salt water, with a 6 m last stop.
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