
| Question: Why are you referring to a hypoxic mix as a gas with less than 20% and not 21%? Answer: Strictly speaking an hypoxic gas will have less than 20.9% Oxygen. However for all practical purposes there is not much difference between 20% or 21% and in order to simplify details most adopted 20% as the practical limit. Some people define a hypoxic gas as having less than 16% Oxygen. Question: The deepest that I have ever dived was 33m/110ft. Someone told me that if I start a Technical Dive Course I will be diving to 70m within 3 days. I am concerned that I will be pushed beyond my abilities. Answer: The course standards require that you increase your maximum depth by not more than 10m/33ft per dive. The small increments allow you time to be comfortable and slowly build your confidence. If at any point you show signs of anxiousness our instructors will not proceed and allow you time to build confidence at that level before proceeding to the next level. Question: How deep can I dive on Trimix? Answer: See our web page showing the dive certifications required for each depth range. Click here. Question: It seems to me as if Technical Diving is very serious diving. How do I select an instructor that I know will be a good teacher? Answer: It is very important that you have a good and trusting relationship with an instructor. Make sure that you have an opportunity to meet with the instructor before you sign up for any course. Ask as many questions as you can and make sure that the instructor is also an avid technical diver. Ask the instructor to explain his dive techniques and how these differ from standard Recreational Diving techniques. In the end you will be entrusting your life into the hands of the instructor and you must be comfortable that he/she will be able to respond to any emergency or difficulty you may have. Question: I see on your web site that you offer training in Rebreathers. What is that? Answer: A rebreather recycles the exhaled gas. If you imagine breathing into a plastic bag, with a method of replenishing the Oxygen and removing the CO2, that in principle is what a rebreather is. "Rebreathing" the same gas, replenishing the Oxygen and removing the CO2. Question: OK, I would like to sign up for a course, what is the next step? Answer: Call us, or send us an email and we will arrange a meeting with you to discuss your requirements and plans in technical diving. Click here to transfer to our "Contact Us" web page. |
| Question: I have heard about "Technical Diving". What is it? Answer: Recreational Diving is regarded as diving to a maximum depth of 40m/130ft, done by people for recreational purposes. Technical Diving is diving to depths greater than 40m/130ft using mixed gases, requiring decompression techniques. Technical diving is an extreme sport. Question: I am interested but have heard some horror stories and are a little unsure if Technical Diving is for me. Answer: One of the first questions our instructors will ask you is why you want to do Technical Diving? The introduction to Technical Diving is to do the Advanced Nitrox Course. This course makes use of standard Nitrox gas mixes, similar to what is used for Recreational Diving. During this course your theoretical knowledge will be enhanced, you will be introduced to technical dive gear and you will do minimal decompression dives. Once completed you will have much improved dive skills and you will be able to make an informed decision if you want to continue. Question: Assume I am happy to continue beyond the introductory course of Advanced Nitrox, what is the next step? Answer: The most logical next step is to gain more experience. Dive with experienced Technical Divers and improve on your skills. Become more proficient and gain confidence. Then you can consider the next course, Technical Diver. Question: What is Normoxic Trimix? Answer: Normoxic Trimix is a gas mix using not less than 20% Oxygen mixed with Helium. The name Normoxic is derived from the term "Normal Oxygen" as found in air, which has approximately 21% Oxygen. Question: I heard about Heliox and Heliair. What is that? Answer: Heliox is a breathing gas mix where all the Nitrogen is removed and replaced with Helium. Any portion of Oxygen is added according to the requirements of the dive. If a portion of Helium is added to Air, it is also referred to as Heliair. Question: What is Trimix? Answer: Trimix is a breathing gas consisting of three gases: Oxygen, Nitrogen and Helium where the Oxygen level could be below what is found in Air. In other words a Trimix Gas could be a hypoxic mix with an oxygen level less than 20%. Some dive agencies regard a hypoxic mix to have less than 16% Oxygen. |


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