1. Match the destination to your experience
Open Water with under 25 dives? Stick to Maldives north atolls, Red Sea coastal, Cayman, or Bahamas reef. Advanced + 50 dives? Add Komodo, Raja Ampat, Tubbataha. Advanced + Nitrox + 100 dives? You're ready for Galápagos, Cocos, Socorro.
2. Vessel category — what each star rating means
- Budget (3★): older steel hulls, shared bathrooms possible, basic but functional dive deck
- Mid-range (4★): private bathrooms, AC, Nitrox, modern dive deck — best value-for-money tier
- Premium (5★): suites, spa, sommelier, individual setups, photographer features
- Expedition: ice-class hulls, helipads, marine biologists on board (Antarctica, remote Indonesia)
3. Cabin class — where to invest, where to save
Lower-deck twin: cheapest, slightly more roll, no view but you only sleep there. Main-deck double: balanced choice with a porthole. Upper-deck/suite: full windows, more space, 30–80% premium. If your priority is dives over views, save here.
4. Group size & guest-to-crew ratio
Smaller boats (12–16 guests) feel intimate, with shorter surface intervals and more attention from guides. Larger vessels (24–32) offer more amenities but split into multiple dive groups. A guest-to-divemaster ratio of 4:1 or better is ideal.
5. Dive operation quality
- Dedicated dive deck with individual setup spots
- Camera table with charging stations & rinse tanks
- Tender boats (RIBs/zodiacs) — preferred over reef hooks for current sites
- Nitrox availability and price
- Maximum dive groups per dive (lower = better)
6. Itinerary structure
A great itinerary has variety: walls, pinnacles, drift channels, a wreck or two, and at least one signature site (Hanifaru, Tiger Beach, Manta Point). Avoid 'fill' days where the boat just relocates without diving.
7. Safety record & insurance
Ask: Is the operator insured? When was the last hull survey? Are crew CPR/EFR certified? Is there onboard oxygen, AED, sat-phone, and a registered EPIRB? On Blue Rides we only list operators with valid insurance and current safety paperwork.
8. Cancellation & payment terms
Look for flexible cancellation (refund or credit if you cancel 60+ days out), staged payment plans, and clear refund policies. Check whether they accept bank transfer (often with a discount) versus card-only.