On the other hand, despite the various advancements, dive tables and modern dive computers cannot eliminate the risk of decompression sickness, though they can greatly minimize the risks. This is due to the intensive diver training, standardized safety procedures, and advanced scuba equipment that have made scuba diving both safe and enjoyable.
People now consider scuba diving to be a safe pursuit despite the many risks associated with swimming at such great depths. They can be found or sold in various places and are considered must-haves in save-a-dive kits.
These guides also assume that the user is diving at sea level or in waters less than a thousand feet, descending at about 60 feet per minute, and resurfacing at 30 feet per minute before slowing down starting at 15 feet. Standard recreational dive tables from all certifying agencies pretty much assume that you’re diving with standard compressed air (not Nitrox or other gas mixes) and that you won’t be visiting other depths or dive back down after resurfacing. These charts are commonly printed on booklets and waterproof plastic cards that divers can bring with them for reference underwater.Ĭertifying agencies, like the Professional Association of Diving Instructors (PADI) and the National Association of Underwater Instructors (NAUI), have their own versions but they only really differ in format. Dive tables (also known as recreational dive planners, dive charts, and decompression tables) were originally created by the US Navy to regulate scuba divers’ underwater time and prevent them from absorbing too much nitrogen, which results in decompression sickness or “the bends.” They are basically charts filled with numbers and letters that refer to water depths and times.
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