Is a Dive Computer Worth the Money?

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Years ago, dive tables were how everyone dived. Today, nearly all recreational divers use a dive computer and they should.

Your computer calculates depth, bottom time, ascent rate, and no-decompression limits in real time. Tables can't do that. If you go shallower partway through, a computer adjusts. Tables are set before you get in.

Watch-style computers are the most common use these days. These are compact, easy to read, and you'll use them as a regular watch between dives. Hose-mounted computers are available but not as many buyers pick them these days.

Basic computers go for around $300-odd and cover everything the average diver requires. They give you depth tracking, dive time, no-deco limits, log function, and sometimes a basic apnea mode. Mid-range gets you air integration, better readability, and more gas compatibility.

Something new divers forget is algorithm differences. Certain algorithms are more cautious than others. A conservative algorithm means less no-deco time. More aggressive algorithms allow longer time but with less buffer. Both work. It comes down to what you're comfortable with and your diving background.

Check with someone at a Cairns dive shop website who uses multiple computers before buying. Staff will have real-world feedback on what works and what isn't just marketing. Decent dive shops put out product guides and comparisons online as well

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