Altitude Diving Explained — Rules, Calculations & Exam Answers | PADI IDC / DM Dive Theory

Everything you need to answer altitude diving questions in the PADI dive theory exams — explained clearly, with worked examples. In this video: Timestamps: 2:26 Why altitude diving increases DCS risk (pressure gradient explained visually) 6:30 How to convert actual depth to theoretical depth using the altitude table 9:00 Safety stop depth adjustments at altitude 10:14 What to do if you can't wait 6 hours before diving — full worked example with pressure groups 13:30 Halved ascent rate, 2-dive limit, higher altitude first rule 15:14 Nitrox at altitude — what changes and what doesn't 7:35 Worked example 1: 80 ft dive at 10,000 ft — NDL drops from 30 to 13 minutes 11:17 Worked example 2: Immediate dive at 6,000 ft to 60 ft — starting in Pressure Group L, NDL = 8 minutes Part of Will Welbourn's PADI IDC Dive Theory series. Will is a PADI Platinum Course Director at Go Pro Caribbean in Roatan, Honduras — one of the world's leading IDC training facilities with 500+ instructors certified since 2008. 📖 Full study notes: https://goprocaribbean.com/altitude-d... 🎓 PADI IDC in Roatan: https://goprocaribbean.com/padi-instr...