DEPTH Blog

The most useful snippets from our authors, all in one place. DEPTH discusses topics of diving, equipment and environment, physics and physiology, technique and technology, and hyperbarics.

scuba diving safety    Get Dan's Book HereDan Orr, past President and CEO of Divers Alert Network (DAN), is known as a first-class educator and longtime ambassador for the diving industry. A veteran diver of more than 40 years, Orr joined DAN in 1991 and immediately established the DAN training department and the Oxygen for Scuba Diving course, a standard in the dive industry.

Orr has held membership and leadership positions in many notable diving organizations such as National Association of Underwater Instructors (NAUI), Professional Association of Diving Instructors (PADI), Association of Canadian Underwater Councils (ACUC), Young Men's Christian Association (YMCA), National Academy of Scuba Educators (NASE), International Association of Nitrox and Technical Divers (IANTD), Undersea & Hyperbaric Medical Society (UHMS), National Association For Cave Diving (NACD), the Historical Diving Society, Academy of Underwater Arts and Sciences, the Institute of Diving, and the Explorers Club. He is chairman of the board of the Historical Diving Society and secretary of the DEMA board of directors. He has several specialty certifications, including full cave diver, rescue diver, and rapid response rescue and recovery. Orr has authored, coauthored, or reviewed more than 15 books and manuals on scuba and various aspects of scuba safety and rescue.

[Videos] Penguins in Antarctica

Dan Orr, author of Scuba Diving Safety, recently returned from a trip to Antarctica. He shared these two videos for BestKids Club members to enjoy.

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Dan Orr Kicks Off Shark Week Celebration in Driggs, Idaho

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Dan Orr is no stranger to shark diving. In 2008 he took his first shark dive trip to Guadalupe Island, Mexico, and Dan was instantly hooked.

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Surface Rescue Techniques

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Photo Caption: Author Dan Orr participates in the Grand Teton National Park Winter EMS Refresher giving lectures on diving safety. As part of the refresher, Dan presented a copy of his book, Scuba Diving Safety, to the GTNP EMS Group for their library.

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Does Scuba Diving Have a Retirement Age?

Does Scuba Diving Have a Retirement Age?

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Controlled Ascent and Safety Stops

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"Current philosophy dictates that all dives, even those well within the no-stop limits of tables and computers, should include a controlled ascent (dictated by the diver's computer, tables, or personal or training philosophy) and a safety stop. Newly published research recommends slower ascent rates (slower than 60 feet, or 18.2 meters, per minute according to most tables) possibly coupled with multiple safety stops. Reading available data published by the training associations and DAN is a good way to become familiar with the latest information on ascent protocols. 

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Diving First Aid

"The ability to manage a diving emergency and provide care to an injured diver does not come from experience alone. The best thing you can do to prepare for the dive-related injuries is to learn everything you can about such injuries and the situations that lead to them.

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The Signs of a Dive Emergency

"The signs of emergencies are varied and can be subtle. They may be apparent before or during the dive. A diver's ego or peer pressure may cause the diver to disguise a problem, such as a lack of competence, inadequate experience, overconfidence, anxiety, illness, or distress. Such problems may show up on the boat before anyone gets in the water. All divers should adopt the credo of the cave and technical diving communities: Any diver can call any dive for any reason at any time. No question are asked - and the credo applies before the dive even begins. All divers should agree to this as part of the predive briefing. If more divers felt comfortable not making a dive because it was beyond their experience, or they didn't feel well, or their karma was all wrong, or whatever, there would probably be fewer problems."

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Scuba Diving Safety

Many of you may have heard of, or know personally, Mr. Dan Orr.

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