Best Dive Computers for Extended Liveaboard Trips
When you're stuck on a boat for a week doing four or five dives a day, the dive computer that works perfectly on weekend trips can become a paperweight. In this episode, veteran dive operator Ray Hollister draws on forty-plus years of experience to explain exactly what separates a reliable liveaboard dive computer from one that will fail you when you're miles from the nearest dive shop. Whether you're planning your first extended trip or you've already had gear fail on you mid-voyage, this episode breaks down the features that actually matter when there's no backup plan.
Key Takeaways
- User-replaceable AA batteries beat built-in rechargeable batteries for long trips. A week of intensive diving can mean fifty hours of computer use, and many rechargeable units die by day four. With AA batteries, you can swap in fresh ones yourself in ninety seconds using a coin, like changing batteries in a TV remote.
- The Shearwater Perdix AI stands out as the top recommendation for liveaboard diving. It combines long battery life, easy field repairs, and trustworthy decompression calculations in one package that has proven itself in harsh saltwater conditions.
- Your dive computer's algorithm needs to get stricter as the week goes on. Repetitive deep diving day after day loads your body with nitrogen differently than weekend diving. A good computer recognizes this and gives you progressively more conservative limits, like a coach who makes you rest more as you get tired.
- Saltwater destroys electronics faster than most divers expect. Look for computers with high-quality seals and avoid models with exposed metal charging contacts, which can corrode into uselessness even with daily freshwater rinses.
- Wireless air integration is useful but needs backup. Transmitters can lose signal in deep or extra-salty water, so always mount a traditional pressure gauge as your primary gas monitoring and treat the wireless reading as bonus information.
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