Scuba Safety Measures

Scuba Diving, while fun, has it's share of hazards like any outdoor sport. Knowing how to recognize and deal with potential problems before (or when) they occur can make the difference between life and death when you're under water. Here are a few safety precautions to take, as well as some of the things that can happen that you should look out for.

Plan Contingencies for Every Emergency - there's that law good old Murphy made, that "Anything that can go wrong will go wrong". While a seemingly pessimistic and cynical statement, it actually helps sometimes to take this approach, especially when planning for emergencies. Take enough gear to handle all the potential problems that you'll encounter, and have back up means of getting external help on hand in case something arises that you weren't prepared for.

Decompression Injuries: DCS - know how to recognize the symptoms of these two maladies. They will require treatment in an emergency decompression chamber. They are: Decompression sickness, or DCS, and Cerebral arterial gas embolism, or CAGE. DCS occurs because the body forms air pockets in it when utilizing compressed air, as well as becuase it is subject to increased external pressure from the water. DCS occurs because the nitrogen in a person's air supply, unlike oxygen, is NOT used up and absorbed by the body, and the increased levels of nitrogen, unless controlled by a device on the breathing apparatus called a regulator, collects air pockets in the body. These create a cramping sensation, nausea, and lightheadedness, and a physical sensation referred to by divers as The Bends. DCS usually occurs on an overly fast descent, as the body and the regulator can't compensate fast enough for the increased water pressure.

Decompression Injuries: CAGE - Cerebral arterial gas embolism occurs more often as a result of an uncontrolled rapid ascent, as opposed to the bends that hit divers due to a fast descent. This manifests as sharp pains in the body, especially in the sinuses, head, and in the lung area. This is a very serious condition that can be potentially fatal. CAGE is caused when the rapid ascent of the diver causes air bubbles similar to those formed during DCS, only this time the air pressure changes that trigger the bubbles in the body are due to a sudden lessening of the water pressure surrounding the body. This causes the trapped air to have a higher pressure volume than the surrounding atmosphere. In effect, the diver is an unopened can of soda that got shaken real good underwater, and once he leaves the water, it's the same effect as opening the can...

Injuries - the injuries that can occur from decompression range from the merely bothersome, like nausea, sharp pains, and cramps, to more serious matters. One of the most potentially damaging is trapped air bubbles reaching the heart or the cerebral system. As some of you may have seen on television, there are episodes where a villain kills a sleeping victim in a hospital by injecting air into their dextrose. The air bubbles formed in the veins cause cardiac arrest when they hit the heart, or a stroke when they hit the brain. This is a true fact, and the air bubbles causes by decompression may have this effect, if large enough. This is one of the major reasons why controlled ascents and descnet rates are so vital to safe diving.

Other Potential Maladies - aside from decompression sickness, which is the most common and severe type of injuy incurred by divers, other maladies are mostly atmospheric in cause. Hypothermia is caused by dives in extremely cold water, or by diving with a wetsuit that doesn't provide enough heat insulation. Dehydration also occurs on a dive, surprisingly. Be sure to drink lots of water before you go. Asphyxiation occurs, on the other hand, if the air supply used is flawed and doesn't give the body adequate oxygen to function.

Scuba Lifesaving - Take up a first aid class that will allow you to recognize the signs of the conditions given above, and also teaches you emergency measures to be used in those events. Don't rely on text based or verbal descriptions, make sure that the first aid course gives you full, hands on training in dealing with these injuries. Also keep your first aid kit handy and well stocked on your dives, and always have a means to call for help from others, including a radio transmitter, cellular telephone, and even signal flares. While seemingly bulky and unnecessary, these items can mean the difference between life and death.

Safety in Scuba Diving

Scuba diving is a unique and beautiful experience that everyone should try at least once in their lifetime. Barring perhaps hydrophobics, almost anyone will find the experience of being underwater and floating along both exhilarating and relaxing at the same time. However, without proper training and preparation, scuba can also be a dangerous undertaking, with hazards that can affect the unprepared. With proper equipment and precautions, however, it is a safe and wonderful thing to do. Here are a few safety tips for the beginning scuba diver to consider before taking up diving in earnest.

Training - Get certified. Take a training course that has official certification. If diving only for sport while on vacation like some people do, make sure that you have a certified instructor accompanying you on your dive. If diving in earnest, take a course that will actually give you a certificate for diving (not necessarily as an instructor, but one that will register you as a certified and capable scuba diver).

Physical Conditioning - see a doctor before taking up scuba. Make sure that your doctor gives you a clean bill of health for the physical exertions required in scuba. While mentally relaxing, scuba diving involves enough physical effort that people with weak cardiovascular and especially respiratory systems can't indulge in it. Asthma, a weak heart, tendencies for asphyxiation, all of these can disqualify a person from scuba diving. Also on the note of physical capability, knowing how to swim is a huge bonus. While not a necessity because scuba gear allows even those who don't know how to swim to navigate underwater, it is nonetheless a very good thing to know. After all, you'll be underwater...

Avoid Places Where Bad Things Dwell - your training and certification in scuba will include a ranking that determines what levels of underwater hazards you're trained to tackle. Avoid any places that you aren't certified to handle. These areas will usually be very dangerous for the untrained, and will usually include special hazards that need their own branch of specialized scuba training or certain pieces of equipment to overcome. Examples include scuba diving in shark infested waters, ice floes, amongst coral reefs with toxic or aggressive underwater lifeforms, underwater caves, and shipwrecks.

Proper Equipment Is A Must - your training and certification should also include care and maintenance of the scuba equipment. If you're using your own equipment, make sure that you take excellent care of it, keeping it in top condition. No matter how skilled you are at navigating underwater, man is NOT biologically aquatic, and your equipment is all that's keeping you alive down there. If renting equipment, give it much more than a cursory once-over. Examine it carefully to make sure there are no flaws in the gear that might cause it to fail during a dive. One of the hazards of scuba diving is drowning if your breathing apparatus gives out.

Don't Dive Alone - Always have a dive buddy or an instructor with you, as long as you are with someone who has more experience than you. If you're diving with a buddy, don't bring along someone who's also a noobie if you yourself are new to the game. If you're an old hand diving with a noobie, make sure that your partner knows how to follow your instructions once underwater. If you MUST dive alone, then at least have someone manning the boat on the surface to make sure you've got a buddy on overwatch.

Study Conditions Before The Dive - listen to weather reports before the dive to make sure you don't wind up diving during a typhoon or worse, a thunderstorm. Even if the conditions seem okay for diving, make sure to pack enough medical equipment to compensate for sudden changes in the weather. Even if it's a heat wave and not something related to wind and rain, adverse weather can be problematic. Heat waves have been known to cause heat stroke and dehydration to divers who thought they were safe from the heatwave because they were underwater. Remember that water conducts heat more efficiently than air.

Know When Bad Things Are Happening - learn and internalize the medical signs and symptoms of the following conditions, as they are the maladies that usually afflict divers. Hypothermia, dehydration, heat exhaustion, and asphyxiation are the things to watch out for, as well as a diver-specific malady called decompression sickness, which occurs when a diver's body is submitted to and becomes accustomed to high pressures underwater, as well as having air bubbles form in the body from prolonged breathing of high pressure gas. Returning to the surface where the body no longer is subject to these pressures can lead to dizziness, sickness, and vomiting from system shock. It is in a way, comparable to a person being used to the thin air of mountain climbing, when the climber goes back to a normal atmosphere and breathes a higher concentration of oxygen.