You can track your dives using dive tables, a depth gauge and dive watch,
but most scuba divers use a dive computer – it’s easier. A dive
computer provides the real-time dive information you need to dive well.
A dive computer takes depth and time information and applies it to a
decompression model to track the dissolved nitrogen in your body during a
dive. Your computer continuously tells you how much dive time you
safely have remaining. Your computer combines a depth gauge, timer and
sometimes a submersible pressure gauge (SPG) into a single, useful
instrument. The majority of divers have a computer because it makes
Easy-to-read display (sometimes in color) that provides the following information:
No stop limits
No stop time remaining
Previous Dive History
Low Battery Warning
Enriched Air / Nitrox Mode
Optional and Desirable Computer Features
Air integrated to display how much air is in your tank. Certain models connect via a hose to your regulator. Some have a quick disconnect. Others receive air supply information from a transmitter on the regulator first stage.
Digital dive watch and computer in one small unit
Automatic or manual adjustment for altitude diving
Replaceable or rechargeable batteries
Multiple gas computers for technical diving or some tec diving computers have a CCR (Closed-Circuit Rebreather) mode.
Interface (USB or Bluetooth) with your laptop/regular computer so you can download your dive data.
Self-adjusting decompression models
Dot matrix screens with menus that allow you to play games to pass the time at safety or decompression stops
Mask display that allows you to glance at critical dive information.
How to Choose YourDive Computer
Don't Hesitate to Invest in a Good Dive Computer. Get What You Want Now, and Go Scuba Diving- That's The Point!
Ask yourself – What type of diving do I do now and plan to do in the future? and What dive computer works with my current equipment, or what complete equipment package includes the type of computer I want?
Look at dive computers with features that match your dive style and equipment setup. Evaluate:
Can you clearly read the data with your mask on?
Does the data display make sense to you – do you prefer numbers, or do you like graphics or charts?
Do you understand how to get the dive information you need?