DECOMPRESSION: THIS IS WHERE THE ADVENTURE STARTS TO GET REAL This ‘first step’ across the threshold from advanced recreational and into the realm of technical diving is a three-cylinder course: two primaries (a twinest or sidemount) plus one stage bottle filled with a decompression gas to optimize off-gassing during a staged, optimized ascent. The decompression gas can be any reasonable mixture, including 100 percent oxygen. It’s the logical way for a diver to build a solid foundation of skills and knowledge and is a gentle introduction to the vagaries of staying at depth beyond the no-decompression limits… these include added thermal stress, increased reliance on solid dive planning and buddy communications, plus starting to build a thorough practical knowledge of decompression stressors and how to mitigate them. RAID’s reputation for excellent skills-based training makes this entry-level d

NITROX PLUS… COME ON IN, THE WATER’S LOVELY So, this is a good time for us to admit that our NITROX PLUS course is not really a technical diving program. That’s one reason it carries the #0 designation. That and because there are zero reasons NOT to add this course to every recreational diver’s bucket list. NITROX PLUS is not about decompression or diving deeper or loading up on masses of extra gear. It is simply about keeping the adventure real and diving with an extra layer of safety. We feel comfortable including it in our new tech pathway because the focus of the course is to carry backup gas available via a redundant delivery system. This additional gas is not decompression gas, and certainly not gas that’s part of the dive’s overall gas management plan, and it’s not to gain more bottom time. The redundant gas that’s there in case your “primary” system fails at depth. If there is anythin

FOR RAID ONLINE ANALYSER Last updated: October 2025  Introduction  RAID Analyser (“we,” “our,” or “us”) is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application.  Information We Collect  Device Information: We may collect information about your device, including device type, operating system, and app version.  Usage Data: We collect information about how you use the app, including calibration history and measurement data.  Settings Data: Your language preferences, unit settings, and other customization options are stored locally on your device.  How We Use Your Information  To provide and maintain our service  To improve our application and user experience  Data Storage  All measurement data, calibration information, and user preferences are stored locally on your device. We do not t

First aid training is a must-have for anyone involved in outdoor adventures… especially diving. The RAID first aid course equips students with the basic skills to handle injuries and emergencies when professional help is far away. Unlike urban adventures, outdoor settings are unpredictable. The risk of accidents like sprains, fractures, and hypothermia are increased. Always be prepared with RAID First Aid and CPR when you and your buddies are: Far from Professional Help. Faced With Unpredictable Factors. Subject to Specific Risks. Have Limited Communication. With RAID training, you may preserve life, prevent further harm, and help ensure the best outcome until rescue.

LET THERE BE LIGHT ON YOUR DIVES: SOME THOUGHTS It’s always interesting—and informative—to read the questions new divers ask on popular online dive forums. It’s a constant reminder to those with experience and more than a few dives logged that some of the issues we take for granted can seem like a big deal for a newbie.’One common question that sometimes stumps novice divers concerns dive lights. Here’s our take on that issue.There are a few things associated with dive gear that have gone through a more dramatic sea change than batteries. Battery technology in use today makes what was current a generation ago look Neolithic. This has also affected the design and function of several pieces of equipment, particularly lighting for still or video cameras, as well as casual handheld flashlights/torches used by sport divers.You may be old enough (sorry, experienced enough) to remember underwater li