Having deco O2 doesn't eliminate the need for emergency O2. I could have a set of 104's full of O2, but without the proper masks it would be mostly useless to a unconscious victim. Use appropriate tools for the job.
Your 100% emergency O2 on the Dive
- Thread starter eternaljonah
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bring a RescuEAN with you. BC inflator quick disconnect inlet, constant flow outlet. Waterproof and basically indestructible. Can't use an MTV-100, but that's about it
Or connect this little guy to a male DIN fitting.
CGA870 (Med Block) to 1/4'' NPT
Now all the O2 reg and the MTV-100 now fit any/all spare or leftover deco gases on the boat.
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Whenever I am diving from a non-commercial boat, and one or more of the dives will be deeper than 20 meters, I always bring one or two of my 100% deco bottles on the boat with me. I leave it on the boat, hang it from the drop line, or carry it with me, depending on the situation. Whenever I'm doing staged deco dives, I always bring an extra O2 cylinder too - never hurts! Commercial operators in FL always carry a DAN O2 kit, and some can be weird about bringing on extra cylinders (reasons!?) But when I go out with friends, most of whom don't keep a DAN kit on their boats, I prefer to have some O2 available.
Case in point - I have only ever "needed" it once, but glad I had it. On a trip with some friends, another diver who came up from a short/deep dive (~10-12 minutes at ~35M.) He was generally not feeling well (tired, a little nauseated), and complaining of a headache - but no other symptoms. The headache and nausea resolved after breathing 100% O2 for about 10 minutes during our long ride back to the marina. We guessed it was a bad fill (CO, etc.) but not sure.
Case in point - I have only ever "needed" it once, but glad I had it. On a trip with some friends, another diver who came up from a short/deep dive (~10-12 minutes at ~35M.) He was generally not feeling well (tired, a little nauseated), and complaining of a headache - but no other symptoms. The headache and nausea resolved after breathing 100% O2 for about 10 minutes during our long ride back to the marina. We guessed it was a bad fill (CO, etc.) but not sure.
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