Alert Diver Category: Safety 101

Propeller trikes happen to divers and the injuries are brutal. Read more about propeller safety, tools, research and more to prevent these nasty injuries.

Propeller safety should be taken as seriously as every other aspect of dive safety. Much of the responsibility certainly lies with the pilot of a boat, but there are several things divers can do to help increase their safety margin when sharing the water.

As a hyperbaric physician and dive instructor, I’ve been around a lot of dive accidents, and I’ve spent decades educating divers and treating decompression sickness (DCS). A misunderstanding I consistently see among the divers I treat pertains to no-decompression limits (NDLs), with divers repeating the common refrain that they were “diving within the limits” and that their DCS must therefore have been a random event.

Checklists may be the missing tool to safer diving. Checklists are used in other fields, not just diving, like aviation and surgery. Read more about the history and importance of checklists.

When signing in for a dive, the medical statement can feel both burdensome and an invasion of privacy. You may want to lie. However, medical statements are an important element of dive safety.

You check in at the dive shop, sign your waivers, get your gear on the boat, and set up your BCD on your first tank for the day. The divemaster introduces you to your dive buddy for this trip — a total stranger from another part of the world who is here for the same things you are: great diving and returning home safely. 

While prevention against decompression sickness, it’s relatively rare. Comparatively, there are more common hazards to divers. Read more.

Pulmonary barotrauma can occur in a shallow swimming pool if a diver holds their breath during ascent or inadvertently floats to the surface while holding their breath. Most dive-related pulmonary barotraumas occur in compressed-gas diving due to pulmonary overinflation during a breath-hold ascent. Pulmonary barotrauma can occur even with normal breathing if there is an obstruction in the bronchial tree that prevents one lung segment’s normal ventilation.

Being physically fit can be important, and sometimes crucial, for dive safety. Physical fitness plays a role in both regular dive activities and emergent events. A quick and effective response to sudden demands can often quickly and easily resolve a situation, while an insufficient response can prolong or exacerbate it.

Lionfish are fascinating and beautiful creatures, but they can cause serious injuries as well as environmental problems outside their normal range.