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scenario: Unconscious diver with reg in mouth at 80 feet. You need to bring the diver to the surface quickly. You were at depth for 20 minutes. Various courses and texts talk to the proper technique for bringing the diver to the surface and giving first aid. But, if you have to bring the...

That more or less leaves us with the question hanging over the air quality. But it is odd that no-one else seems to have been affected on the day. Reckon if you ever have a repeat of this amnesia you should get the air tested, if you remember to do it, that is ;-) Seadeuce

Since I contributed to the original thread on this subject I feel I should maybe jump in here. Instead of looking for reasons FOR what happened, let's look AT what happened. IOW at the evidence. Memory OK to 50, then from 90. Not too clear back on surface. We can discount Narcosis. It...

Yes, that question was for you. Glad others have taken it up. A comment on your nausea - if one is feeling nauseated on a boat, they usually get into the water for symptoms to disappear. Choppy seas, IMO, would only affect you out of the water, not in it. At least, I have never come across a...

With the Yukon I'd say you can acquaint yourself with the ship before you dive. A rarity. Then treat it as you would a reef (can't enter), and stay on the outside for a good scenic dive. This might help your research a bit: http://www.divebums.com/Wrecks/Yukon/index.html Hope you like...

One thing you may have overlooked, the quality of the air in your cylinder for that dive. Maybe it was a factor. Seadeuce

The following guidelines are what I have used: 1. Never penetrate a wreck on your first dive on it. Recon the outside thoroughly first. 2. Look on the outside of a wreck the same as you would a reef, begin your dive at the deepest end, then circular multi-level...

Courtesy of the late Rob Palmer, speaking at the National Dive Conference, Cork, Ireland, 1987 The best test for narcosis is to go to a depth that you know you will not be narced at. Then take a few breaths of heliox. You will then realise how narced you were. Seadeuce

Seastar was very good, diving was easiest I've ever done. Side trips excellent. Would I go back? YES Go and enjoy! Seadeuce

Have stayed in the vCoco Beach resort, Puerto Galera. One hairy boat trip from Batangas! But the resort was very up-market, and the dive centre there - I think German VDSL trained (CMAS) knew their stuff. Lovely resort, giant clam shells for sink basins in the bathroom! You'll enjoy it...

One other thing ... If penetrating a wreck at night, be sure to mark the entrance (exit) with a glow-stick or such. Mark it on the INSIDE of the entrance! Seadeuce

Good advice there from HBdivegirl. To take things one step further, your buddy probably believes that your incident was a failure on his part. He should be given the chance to accept that these incidents happen, sometimes without rational explanation i.e. within the tables. An undeserved hit...

Good advice being given here. One thing I'd like to add, penetrating a cave i.e. a cave certification course, may be a good initialiser to get you used to overhead environments, and to your reactions within them. But it must be remembered that caves are natural formations, and will not have...

Gordon Rocks, Galapagos, March '99 Fast current, exhaust bubbles running horizontally, riding a thermocline with my left arm outstretched in warm water, my right in cold. Passing the hammerheads by, and reaching the "corner" of the volcanoe's rim, where I entered an eddy with alternating...

Surface swells affect depth at a ratio of about 2:1, meaning that if the distance between the top of the swells is, say, 100ft, then it will cause a disturbance down to a depth of 50ft. If the swell is shorter, 40ft, the depth is 20ft etc. It must follow that a tsunami wave, with a much...

Apologies, that should read http://www.undercurrent.org Seadeuce

That's quite a list you've got there! Very hard to provide definitive answers to satisfy all factors. I suggest you do the deciding backwards. I mean, check out the diving first, shortlist the options, then see which venue satisfies your wishlist. http://undercurrent.com is a good place...

That's quite a list you've got there! Very hard to provide definitive answers to satisfy all factors. I suggest you do the deciding backwards. I mean, check out the diving first, shortlist the options, then see which venue satisfies your wishlist. http://undercurrent.com is a good place...

The Odyssey does, but check before any trip. If they had a group of AOWs aboard who were not even Nitrox certified, then they would cut their cloth to suit. As a rule they prefer to do all dives on Nitrox. Triox would probably be common for "Deep Week" - see their site...

Was in Truk on the Odyssey Oct. '03. As Barracuda2 said, it is awesome. Depths, well it is part of it. But you don't have to go all the way down, there's plenty to see at deck level. Strongly suggest you take a Nitrox course before you go. It gives a greater margin of safety, and your mix can...