What is the 120 rule in diving?
The rule advises that the dive depth (in feet) in addition to the time a diver spends underwater (in minutes) should add up to no more than 120. The purpose of this rule is to help scuba divers to avoid serious dangers such as nitrogen narcosis as well as decompression sickness by keeping them within a safe range. Total time = Tank capacity / Air per minute. Using an 80 cubic foot tank at 3,000 psi: A diver with a SAC rate of 0. With an 80 cubic foot tank, they’d have about 53 minutes of dive time (80 / 1.Its core is simple arithmetic: for any single planned dive, your maximum depth in feet plus your planned maximum bottom time in minutes should ideally equal 120 or less. Think of a dive to 60 feet: under this rule, aim for 60 minutes max bottom time (60 + 60 = 120).For recreational scuba divers, most diving agencies recommend a maximum depth limit of 40 meters. This limit is in place for safety reasons, and diving within these boundaries is deemed relatively safe, provided recreational divers have the appropriate training and equipment.The Rules of Scuba Diving: Never Hold Your Breath. Plan Your Dive. Dive Within Your Limits. Ascend Slowly (and Don’t Forget Your Safety Stop) Check Your Gear.
What are the two golden rules when scuba diving?
The Rules of Scuba Diving: Never Hold Your Breath. Plan Your Dive. Dive Within Your Limits. Never hold your breath. This is undoubtedly by far the most crucial of all safety rules for diving because failure to adhere could result in fatality. If you hold your breath underwater at the depths at which scuba divers reach then the fluctuating pressure of air in your lungs can rupture the lung walls.Many people in their 70s and 80s continue to dive, although their diving style may change over time. The key to safe diving is physical fitness, not age.A person with heart trouble, a current cold or congestion or who has epilepsy, asthma, a serious medical problem, or who is under the influence of alcohol or drugs, should not dive.Never hold your breath. This is undoubtedly by far the most crucial of all safety rules for diving because failure to adhere could result in fatality. If you hold your breath underwater at the depths at which scuba divers reach then the fluctuating pressure of air in your lungs can rupture the lung walls.A person with heart trouble, a current cold or congestion or who has epilepsy, asthma, a serious medical problem, or who is under the influence of alcohol or drugs, should not dive.
What is the scuba 1/3 rule?
The Rule of Thirds is a guideline used by scuba divers to manage their air supply effectively throughout a dive. It involves mentally dividing one’s breathing gas supply into three equal parts. One-third for the outward journey, one-third for the return journey, and one-third as a reserve or emergency supply. The 1/3 rule, also called the Rule of Thirds, states that you should use one-third of your air supply to descend into the water, one-third for the actual dive, and save one-third for your ascent back to the surface.
What is the best breathing pattern for scuba diving?
The only thing for certain is that the optimum breathing strategy when scuba diving is deep slow breathing. You need to inhale slowly and then also exhale slowly without holding your breath. Being hydrated is so important for scuba divers both before and after a dive! Staying hydrated can help minimize the risk of decompression sickness (DCS). After diving, try to drink more water than normal.Caffeine should usually be avoided for several hours before diving although before a short cold dive it might be useful to help keep warm. Dehydration is a significant factor for all divers and all divers are usually suffering some degree of dehydration after diving.Fuel up with a balanced meal 2–3 hours before your dive. Choose complex carbs, lean protein, and healthy fats. Hydrate thoroughly before, during, and after diving. Avoid greasy, spicy, or carbonated foods pre-dive.When flying after diving, the ascent to altitude increases the risk of decompression sickness (DCS) because of the additional reduction in atmospheric pressure.
Who cannot go scuba diving?
Individuals should not dive if they have cardiac disease that might result in incapacity underwater (e. IPO (e. DCS (e. Scuba diving typically involves moderate intensity physical activity, but situations can occur that require high-intensity activity. In addition, scuba diving challenges the cardiovascular system in a variety of ways that may be life-threatening for individuals with heart disease or a low capacity for exercise.