The following is a report I wrote after experiencing a minor decompression injury while diving the Alma EA Holmes Wreck off of Boston, MA.
January 7, 2007
The Plan
Planned Profile:
| Depth (fsw) | Time | Runtime | Notes |
|---|---|---|---|
| 160 | 30 | 30 | Bottom – 21/35 |
| 120 | 1 | First deep stop | |
| 110 | 1 | ||
| 100 | 1 | ||
| 90 | 1 | ||
| 80 | 1 | ||
| 70 | 4 | Switch to 50% | |
| 60 | 2 | ||
| 50 | 1 | ||
| 40 | 2 | ||
| 30 | 3 | ||
| 20 | 14 | Switch to O2 |
My dive buddy Scott and I were diving together and our plan was to spend 30 minutes on the bottom at 160 fsw. We were breathing 21/35 in our double 130s with a rock bottom of 1000 psi. We were also carrying two aluminum 40s with 50% nitrox and 100% O2 for decompression. The plan was to descend and, per Heather’s suggestion, run a reference line across the beam of the ship so we could scooter around either side without losing track of the upline.
Posted in Decompression Diving, Trip Reports
Tags: DCS, Decompression, scooter, wreck
777 views
(1 votes, average: 5.00 out of 5)
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Tags: DCS, Decompression, scooter, wreck
777 views
(1 votes, average: 5.00 out of 5) Loading ...
7 Comments
Dec 4th, 2008
thank you that was very interesting and i am going to post it on our diveny sb….wendy
Dec 6th, 2008
Hi Soggy
Thanks for posting this. Do you mind if I give it as an article to my students. I want to highlight a calm and well thought out response to an incident.
I'm interested in discussing the deco profile, but not on a comment like this. So if you're happy to do that, please email me. mike.taylor@triton-oceanic.com
Cheers
Mike
single tank numpty on the forums
Mar 6th, 2009
Excellant post and I'm glad everything turned out for the best for you. In the pic of you sitting and breathing off a tank was that pure O2 or an EANx ?? After looking at your dive profile it looks good, but sometimes just out of safety concerns I add 3 mins on O2 at 10 feet. Getting bent is no fun at all!!
Mar 6th, 2009
That pic was me breathing my O2 tank. I had already done over 20 minutes on O2 between 20 ft and the surface, which was almost twice what was required for the dive.
Mar 7th, 2009
If you ever get up to Canada and need a dive buddy hit me up. I'm in the middle of the Country, but we have some pretty good diving in Manitoba. West Hawk Lake is the deepest fresh water lake around, ( 332' in the middle, formed by a meteor years back). And like I always say to my students when they're just starting out, " Just because you're trained to dive to 300' doesn't mean you have to every dive!! "
My e is: policediver16773@yahoo.ca
Take care.
Tom
PS:
Be prepared for an article on police diving that is going to be posted on Monday or Tuesday after Erik proof reads it. See I can write as well as dive!! LOL!!!
Mar 10th, 2009
It's posted! Many more articles coming from Tom.
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