Dive Log — What It Is and Why It Matters
A dive log is a record of a completed dive stored in your dive computer's memory. Each log entry typically includes maximum depth, average depth, bottom time, surface interval, water temperature, gas mix used, and a depth-time profile graph showing your dive path. Most recreational dive computers store 50 to 200 dive logs before older entries are overwritten.
Dive logs can be downloaded to a smartphone app or desktop software via Bluetooth, USB, or infrared for permanent storage, detailed analysis, and sharing. Maintaining a dive log is important for tracking experience, identifying patterns in air consumption, and meeting the documented dive requirements for advanced certifications.
Frequently Asked Questions
How many dives can a typical dive computer store?
Entry-level computers store around 25 to 50 dives, while mid-range and premium models store 200 or more. Once the memory is full, the oldest logs are overwritten, so regular downloads are recommended.
Do I still need a paper logbook?
Many dive centers and instructors still ask to see a physical or digital logbook for experience verification. Most divers maintain a digital log through their dive computer's companion app, which serves the same purpose.
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