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True John, but my point is that all those variables combined were contributing factors in addition to being narc'd. The narcosis might not have been as severe under different diving conditions. And that is exactly my point, one has to be able to try and see the entire picture prior to making...

The Rouse's chose to dive under extremely adverse conditions. A storm was coming, 8 foot swells, cold water in zero vis, ripping current, a claustrophobic unstable U-boat and their own faulty gear (the mouth piece on one of their deco cylinders was torn). Several divers on that trip chose not...

I took the course well before doing Trimix. It was an excellent course and we had a great instructor. There are are quite a few great dive sites in the Red Sea (where I do 90% of my diving) that are in the 45-60m range where Helium is simply not available, as such I dive in this range fairly...

And I'm sure plenty don't.

Thanks for the feedback. There's an interesting article in Tech Dive Mag by Asser Salameh (the Dec 2010 issue) on accelerating no-fly times using surface 02. While there is an improvement in reducing the time using surface 02, it's not as much as I would have thought, especially when comparing...

You're welcome. Keep in mind that your weighting will change from a jacket BC to a backplate and wing, especially if you consider the different weights of a steel backplate vs. an aluminum one. You're weighting can even vary among various jacket style BC's due to different materials and...

There are going to be a few factors that will influence the lift you need for your wing. Your height and weight, the areas where you dive, (cold water or tropical ) hence your exposure suit thickness, how much additional weight you need, max depth of dive, and if the weight is integrated into...

I'm wondering are there any new advisories for no-fly times for multiple trimix dives in the 75m-90m range over about 5-7 consecutive days (one/day)? Last time I checked there was at least a 24hr interval recommended before flying for multiple dives over several days, referring more to live...

Thanks Terry. Well noted, will order a couple of longer LP hoses for this then.

Although I don't dive a CCR I do calculate my END for Trimix dives and I have found that there's no one size fits all. It is dependent on the diving conditions such as water temp, level of activity and stress, are you in an overhead environment? and of course your own susceptibility (which you...

Terry, I'm also about to do this with a new Mk2+/R195 so just to clarify... are you also bringing the hose from your right deco bottle behind your neck and down from your left side as well? and If so, do you find the hoses that come standard with the R195 long enough to wrap around from...

Steve Lewis - known as @Doppler here on Scuba Board, and while I haven't had the privilege of studying directly with him (and boy would that be great), I have read his excellent books The Six Skills and Staying Alive and of course he also authored the TDI Advanced Trimix textbook. If he's...

Massive dive tourism has definitely taken its toll on the reefs as well as environmental climate change. I think though that if it's something you love you can start by joining an ecological society as has been mentioned, participating in cleanup dives and awareness programs, improving your...

Absolutely you should continue diving. As others have said, take it slow and learn at a pace that is comfortable for you. The more you do it the more fluency you'll gain... and the more confident you'll become. Even at very experienced levels of diving you can have an "off day" so don't allow...

If you have an instructor who will really make it challenging, you will probably find that the physical stress is half of it... it's also the mental stress and being able to think clearly in high pressure situations that can also wear you down a bit... which in my estimation is a good thing for...

I dive in a 5mm steamer and it starts to feel a little cold after a while in 20C waters. A hood or beanie can really help.

I dive mostly in the Red Sea and it's year round diving but in the winters it can get down to around 21C so I decided my first purchase would be a 5mm steamer as it's always preferable to be warm year round (its also good overall skin protection). Then I purchased a 3mm shorty for the Summers...

I think the Internet is a GREAT source of learning and information. It's also a great source of misinformation and can be an incredible waste of time (you can define what wasting time is :)), but at the end of the day, it's just a tool to augment our lives and open up new possibilities. It's...

Liveaboards can vary quite a bit with respect to skill level and the sites you visit. If you plan on doing it, do some research on the itinerary and dive conditions as well as the skill level that is recommended. My advice is a get a few more dives in, it will help to build your confidence and...