Dive computers are the most significant safety advancement in recreational diving history, tracking your actual nitrogen loading in real time and giving you more accurate bottom time than tables ever could. In this episode, Ray Hollister draws on over 40 years and 8,000 dives to explain how dive computers work, why they matter for every level of diver, and how to choose the right one for your diving style.

• Dive computers track your actual multi-level dive profile and typically give you 15 to 25 percent more no-decompression time compared to planning the same dive with tables, which can add up to hours of extra bottom time over a dive trip.

• The computer continuously monitors depth via a pressure sensor and runs decompression algorithms like Bühlmann or RGBM that model nitrogen absorption across multiple theoretical tissue compartments, adjusting your allowable dive time every few seconds.

• Wrist-mounted, console-integrated, and watch-style dive computers each have distinct advantages depending on your diving style, and choosing between Bühlmann-based and RGBM-based algorithms affects both your bottom time and your safety margins.

• Always carry a backup dive computer on dives beyond shallow recreational depths, because if your primary computer fails underwater, you must end the dive immediately and sit out at least 24 hours before diving again.

Links to any products or resources mentioned in this episode can be found at https://thescubagearlab.com/dive-computers.