SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/scuba-third-half-air-turn

Using the rule of thirds, when do you turn back toward your exit point?

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  1. After using one third of your air
  2. After using two thirds of your air
  3. When the gauge reads zero

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References

  1. DAN Alert Diver: Estimating Your Air Consumption dan.org/alert-diver/article/estimating-your-air-consumption Checked 2026-10-12.

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