So for this trip I have been working very hard on getting dive certified. When I first thought about learning to Scuba Dive I thought it would be relatively easy to do and that it wasn’t that complicated. I was so wrong in so many ways.
Learning to dive is like taking a college class. The online course is divided up into 5 sections, each with 150+ pages of learning material. This does not include the controlled indoor and outdoor dives you have to do to practice all of the skills you read and learn about in the online portions. Dive tables are probably one of the most important things to learn because it can help prevent Decompression Sickness, also known as the Bends, as well as make sure you have an awesome diving experience with an adequate amount of time underwater.
When you dive your tank is 21% oxygen and the rest is Nitrogen, as you dive the air in the tank decreases in volume and increases in density causing more nitrogen to enter your body (i think I’m getting this right?) which means Nitrogen builds up in your body as you dive creating bubbles, which is why it’s so important to take safety stops every 5 meters/15 feet. So what is Decompression Sickness? Decompression sickness is a serious medical condition caused by nitrogen bubbles within your blood and body tissues. If the excess nitrogen in your body tissues is too high, when you ascend and surface, the nitrogen may come out of solution faster than your body can eliminate it, forming bubbles. These bubbles are usually in joints, fatty tissues and environmental factors can be huge game changers on how/when/where they form. How do we make sure this doesn’t happen? By taking safety stops to allow the nitrogen to work its way out safely but also by using dive tables to ensure you’re not diving out of a safe depth and time.
Least to say I’ve never been good at math and figuring the table out involves math. If it’s your first dive it’s easy, if you are doing a second dive in a close period to the first dive you have to account for the nitrogen that hasn’t worked its way out of the body yet. The residual Nitrogen is also why you’re not allowed to fly the same day you dive. So I’ve taken this test three times now and just feel like the biggest idiot on the planet for not getting something that seems relatively simple. So for tonight, I gave the test a break and headed over to a friend’s house where there were double chocolate s’mores, a bonfire, great people and a telescope to look at the stars.