Alert Diver Category: Gear

Dive computers use various methods to determine surface pressure, and some are more accurate than others. Learn more about dive computers and finding the right one for you.

Dive masks are critical pieces of dive gear enabling someone to do so much. Get the basics on dive masks.

To pee or not to pee? That is not the question for technical divers, instructors, or others who spend long hours in the water. Proper hydration and comfort ensure that urine will flow. The question is, What’s the best way to handle it? 

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.