SCUBA Diving and Math - SCUBAnauts

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Knowing how to calculate pressure is an important math function while diving. Here is how you calculate cylinder pressure. 80 cubic feet (or cf) at 3000 PSI can be represented as: 80 cf/ 3000 PSI = 0.0267 lbs per cf So if you have 2000 pounds of pressure in your cylinder this is how you would calculate how much air you have left: 2000 psi x .267 = 53 cf of air Based on your air consumption you can calculate the amount of time you can safely dive.
Weight is very important when diving. Most people need add small weight bags to sink to the bottom a little bit easier. It is also important for ascension rates. The amount of weight added depends on the type, size, <strong>and</strong> thickness of your suit. It also depends on if you are diving in fresh or salt water. The thicker the suit <strong>and</strong> salt water make you more buoyant. For example, I need a total of four pounds to help me to get to the bottom with a 3 mm thick wet suit in freshwater. While another person may need a total of ten pounds with a 3 mm wet suit. You need to make sure to have the right amount of weight or you could sink fast or not sink at all. When you find the perfect amount make sure to make a note in your dive log.
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SCUBA Diving and Math - SCUBAnauts

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