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Scuba diving guides

Articles on dive skills, certification, dive planning and dive sites.

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Dive Computers & DecompressionAugust 31, 20268 min read

Is Nitrox Worth It? The Real Bottom Time Gain at 18-30 m

NOAA no-stop limits on air, EAN32 and EAN36 at 12-33 m, what the fatigue studies found, what nitrox costs, and the dives where it adds nothing.

Dive Computers & DecompressionAugust 30, 20267 min read

How to Calculate Your SAC Rate and Lower Your Air Consumption

A worked SAC rate example from a logged dive, what the number is for, and the measured effects of workload, cold, stress, trim and weighting on your air use.

Dive Computers & DecompressionAugust 28, 20268 min read

Repetitive Dive Planning: Surface Intervals on the DECO 2000 Table

Plan a second dive with the DECO 2000 table: group letter, surface interval and residual nitrogen time, with a worked two-dive day and how long to wait.

Dive Computers & DecompressionAugust 26, 20268 min read

How to Read the DECO 2000 Dive Table: A Worked Example

Read Dr. Max Hahn's DECO 2000 table step by step: round depth and time up, find the no-stop limit, stops and group letter, then follow one worked dive.

Safety & Dive MedicineAugust 24, 202610 min read

Ear Barotrauma vs Swimmer's Ear: Symptoms, Urgency, Diving Again

Middle ear and inner ear barotrauma compared with swimmer's ear: causes, symptoms, which signs need urgent care, prevention on trips and return to diving.

Safety & Dive MedicineAugust 22, 20268 min read

Dive Insurance Explained: What DAN and Travel Policies Cover

Real travel insurance wording on scuba depth limits, what DAN and other dive accident plans pay for, hyperbaric and evacuation costs, and what to check.

Safety & Dive MedicineAugust 21, 20268 min read

Flying After Diving: How Long to Wait Before You Fly

How long to wait before flying after scuba diving: the DAN/UHMS 12 and 18 hour minimums, how other guidance differs, cabin altitude and mountain roads.

Training & CertificationAugust 19, 20269 min read

How to Deploy an SMB (DSMB) From Depth, Step by Step

Step-by-step DSMB deployment with a reel or spool: open vs closed buoys, inflation methods, how runaway ascents happen, colour conventions and practice drills.

Training & CertificationAugust 17, 20268 min read

Drift Diving Basics: Entries, Staying Together and Surface Signals

How a drift dive works: negative entries, staying with the guide, reef hooks, which signals to carry, what to do if separated, and gas planning in current.

Dive DestinationsAugust 15, 20269 min read

Mediterranean Diving Guide: Best Places to Dive by Country

Mediterranean diving by country: signature dives, depths, park rules and permits, and sea temperature by month for Malta, Croatia, Spain, Italy, Cyprus and Turkey.