Dive Computer Guide: Worth the Investment

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Years ago, dive tables were the only option. At this point, the majority of scuba divers use a wrist-mount computer and it makes sense.

Your computer tracks your depth, time, speed of ascent, and no-decompression limits in real-time. Tables give you a static plan. If you change depth during a dive, it updates. Tables are set before you get in.

Wrist-mount computers are the most common go for now. They're compact, readable underwater, and you can use them as a watch between dives. Console computers are an option but less people choose them these days.

Entry-level computers go for around a few hundred dollars and handle everything the average diver would need. Features include depth, time, NDL, a logbook, and usually a basic apnea mode. Mid-range gets you air integration, improved screens, and more gas modes.

Something buyers forget is algorithm differences. Certain algorithms are tighter than others. A tighter setting gives you shorter no-deco time. Looser settings give more bottom time but at a thinner buffer. It's not right or wrong. It comes down to your style and how experienced you are.

Check with someone at a Cairns dive shop who uses various models before you decide. Good dive stores will give you a straight answer on which ones hold up and what isn't marketing. Decent dive full article shops publish product guides and rundowns online too

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