Is a Dive Computer Worth It?

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Years ago, dive tables were another article the standard. At this point, most scuba divers use a personal dive computer and for good reason.

Your computer calculates depth, time, speed of ascent, and no-decompression limits in the moment. Tables can't do that. If you change depth partway through, it updates. Tables are set before you get in.

Wrist-mount computers are the most common buy now. These are compact, readable underwater, and you can use them as a watch too. Console-mount computers are available but fewer buyers go that way anymore.

Basic computers start around a few hundred dollars and cover everything a recreational diver would need. You get depth tracking, bottom time, NDL, a logbook, and often an entry-level freediving mode. The $500-800 range adds wireless air monitoring, nicer displays, and extra gas compatibility.

The one thing buyers forget is conservatism settings. Some algorithms are more conservative than others. A tighter computer results in shorter no-deco time. Liberal algorithms extend time but at reduced safety margin. It's not right or wrong. It comes down to personal preference and experience level.

Ask people at a Cairns dive shop who uses various models first. They'll give you real-world feedback on which ones hold up and what's marketing. Most good dive stores have gear reviews and comparisons on their sites as well

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