Are Dive Computers Necessary?

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Back in the day, tables were the standard. At this point, the majority of recreational divers dive with a dive computer find here and it makes sense.

A dive computer monitors depth, time, speed of ascent, and NDL in real time. Tables can't do that. If you change depth partway through, a computer adjusts. A table can't.

Wrist computers are what most people use these days. These are compact, easy to read, and you'll use them as a regular watch too. Hose-mounted models are available but fewer buyers pick them these days.

Entry-level computers start around $250-400 and cover everything most divers requires. They give you depth tracking, bottom time, no-deco limits, dive logging, and often a simple freedive function. The $500-800 range adds air integration, better readability, and extra gas options.

The one thing people forget is algorithm differences. Some models are more conservative than others. A cautious computer gives you reduced NDL. Looser algorithms extend bottom time but at a thinner buffer. It's not right or wrong. It comes down to personal preference and experience level.

Ask the staff at a local dive store who dives with multiple models before you decide. Staff will offer honest opinions on what's good versus what's just marketing. Most good dive stores publish gear reviews and comparisons online as well

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