Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
Suggesting tech courses to a recreational diver who has indicated no interest, doesn’t appear to be dry suit certified, and has no experience in doubles or sidemount?
TDI advanced nitrox is a recreational course and covers to 40m deep. Doesn't even include deco dives. Better than a PADI deep course as the OP is looking to add specialties to skillset. As the OP wants to do wreck diving this course would be suitable.
TDI for Tech level courses also has requirements for 50 and 100 logged dives and dives beyond 100’. It’s not a telephone book its a dive log book.
Marie, how many recreational divers do you know who decompress on 100% O2 ?
Here is a link to the TDI web site that lists the 9 courses they offer for OC Technical Diver training. Advanced Nitrox is the 4th course in the progression. Advanced Nitrox in combination with Deco' Procedures is a common starting point for those begining their Techinical Diver training and probably the 2 most commonly courses taken in combination of the 9 Technical diver courses TDI offers.
Gee, nor do I.Is this a trick question? I know of no recreational (non-technical) who use anything else besides back gas for safety stops. That back gas is generally air or 28%-32% nitrox, depending on depth.
AN is pretty much worthless by itself, which is why it’s combined with either DP or Helitrox.
You are making this basically everything you have said is wrong.This brings to light some of the issues with the watered down standards that PADI has for their Master Cert. The Master cert' is supposed to be respected that you have Mastered the key skills to Recreational diving. Or you can be a PADI Master of diving during day light hours only, in clear water.
You have very limited experience with recreational divers then who use higher O2 content mixes for dives.Is this a trick question? I know of no recreational (non-technical) who use anything else besides back gas for safety stops. That back gas is generally air or 28%-32% nitrox, depending on depth.
AN is pretty much worthless by itself, which is why it’s combined with either DP or Helitrox.