Alert Diver Category: Gear

Taking up freediving but have zero clue what gear you need? Freediving gear is designed to simply enhance your breath-hold diving capabilities. Learn more about the right gear.

The Nautilus Lifeline is a revolutionary new safety product that offers divers the ability to send a GPS-specific distress signal to nearby and responding boats. Read more about the Nautilus Lifeline.

THE DIVE KNIFE IS AN ICONIC PART OF A SCUBA DIVER’S GEAR. Since the inception of diving as a recreational activity, the dive knife’s presence in a diver’s equipment has […]

What is in your first aid kit? Beyond bandages and an ointment, are you prepared for any and every situation? Here are some expert tips on how to customize the perfect first aid kit.

Dive computers and BCDs are expensive, which can make it very tempting to keep using the ones we own year after year. Remember that this is life-support gear, and it won’t last forever.

Pick the valve or connector that best suits your diving lifestyle, and always stay within your limits: Equipment is no substitute for training.

Understanding the way hookah systems work and knowing how to manage their associated risks will allow for an efficient and enjoyable hookah diving experience. It can be a safe and fun way to introduce people to the underwater world.

There are two main ways for these devices to respond to changes in supply pressure, demand and depth in real time. Diaphragm-sensed regulators use a flexible element to adjust to these changes and to ensure constant outlet pressure and flow relative to depth; piston-sensed regulators use a sliding metallic piston that moves to adapt to these variations.

The demand valve has been promoted as an easy-to-use system that conserves the oxygen supply since it releases oxygen only when the user inhales. However, poor mask fit can lead to underperformance of the valve. Several mask configurations were studied to determine their influence on oxygen delivery.