1. What Is Flying After Diving Calculator?

The Flying After Diving Calculator determines the required surface interval and decompression wait time before flying based on dive depth, bottom time, and ascent rate using US Navy dive tables.

2. How Does The Calculator Work?

The calculator uses US Navy dive table algorithms:

Where:

• \( \text{Depth} \) — Maximum dive depth in feet
• \( \text{Time} \) — Bottom time in minutes
• \( \text{Ascent} \) — Ascent rate in feet per minute

Explanation: The calculation determines pressure group from depth and time, then calculates required surface interval before flying to prevent decompression sickness.

3. Importance Of Surface Interval Calculation

Details: Proper surface interval calculation is critical for preventing decompression sickness (DCS) when flying after diving, as reduced cabin pressure at altitude can trigger bubble formation.

4. Using The Calculator

Tips: Enter maximum depth in feet, bottom time in minutes, and ascent rate in feet per minute. All values must be positive and within safe diving limits.

5. Frequently Asked Questions (FAQ)

Q1: Why is flying after diving dangerous?
A: Reduced cabin pressure at altitude can cause nitrogen bubbles to form from tissues still saturated from diving, leading to decompression sickness.

Q2: What is the minimum surface interval before flying?
A: For single no-decompression dives: 12 hours minimum. For multiple dives or decompression dives: 18+ hours recommended.

Q3: How do ascent rates affect surface intervals?
A: Faster ascent rates require longer surface intervals as more nitrogen remains dissolved in tissues.

Q4: Are there different recommendations for different agencies?
A: Yes, PADI, DAN, and US Navy have slightly different recommendations, with conservative approaches being safest.

Q5: What factors can shorten safe surface intervals?
A: Age, dehydration, fatigue, cold water, strenuous exercise, and multiple consecutive dive days can all require longer surface intervals.