Most commonly observed emergencies in any dive is the loss of breathable air. This can be due to failure of equipment, running out of air or supply failures. Likewise, all other emergencies come almost always due to this situation include uncontrolled ascents or even inability to ascend.
Almost always a result of the loss of oxygen supply to the diver, controlled ascents must be made regardless of the situation but under emergencies one can go for a controlled emergency ascent. In case of buoyancy failures, the ascent is uncontrolled and there is not much you can do on that.
Of all emergencies is a compromised breathing apparatus. Having fellow divers alongside helps as air sharing is possible. Divers must undergo this training for both receiving and donating breathing gas from a single apparatus. Those who make solo dives usually take along alternative air supplies or emergency supplies just in case of apparatus failure.
Rescue Unresponsive Diver
Some divers, usually those advanced and instructors have specific training to help recover unresponsive divers. Usually recreational divers are not given this training but by law all professional divers must get this training and practice it.
Considered one of the most common emergencies, there are two types. First is a diver’s inability to navigate in a closed submerged space and second is physical entrapment. In the first case, one can simply steer clear of any enclosed spaces if they find it claustrophobic. Carrying torch lights helps in dark spaces. As for the second case, getting tangled in ropes, nets or lines can be just as harrowing. Take a knife to deal with such standard entrapment issues. However, getting wedged in tight spaces is something that you can easily avoid by just being aware.
Beware of Dangers
When diving in hazardous environments, knowing your area or what you may encounter always helps in removing the dangers or emergencies in diving. Beware of your environment such as wrecks, caves, underwater currents, depths, decompression requirements and get to understand your equipment completely including failure areas and what to do. Preparation is always the best emergency protocol in scuba diving.