September of 2003. Went to the Spiegel Grove with a group of friends from my LDS, including my instructor, who unbeknownst to me, was taking a group of AOW students doing their deep dive. So we agreed that this dive would be a good one to do towards my DM certification, and would count as part of my internship. The plan was simple, tour the wreck up current and drift back to our moring line and a 3 - 5 min safety stop at 15'. We would make it a multi-level dive, with the deepest point being 100'.
Error #1
I accepted the responsibility of leading a group of divers to a site which, despite of having dived the same wreck 6 times prior, it's an unpredictable dive and subject to changing conditions, including some strong currents.
I had just purchased a Sea Vision 2000 and a new neoprene mask strap with adjusting buckles, and was dying to try it. I already own a Sea Vision Ultra, but was looking forward to the bigger lenses and the slightly lower volume.
Error #2
To try new equipment on a deep dive, under stressful conditions.
Due to scheduling problems, I had gone to a different LDS to get my nitrox fill, and this place does PP fills, not the banked, pre-mixed I'm used to. I asked for 32% and the final mix ended up being 33.7%. The Dive Op offered a 32% bottle, but I didn't see the need to pay extra for something I already had. Considering that I always plan my dives to 1.4 PPO2, I figured, well MOD at 1.4 with 34% is approximately 108, so as long as I didn't descend below 100, I'd be fine. My other tank had 36%, so it was not an option.
Error #3
By not using a tank from the operator with 32% EANx I added another stressor to the dive.
We tied to a moring ball that led to a section of the wreck close to the stern. I thought, "great, I've not seen the stern of this wreck yet." As the "DM" I jumped in first, grabed the current line and made my way to the tag line, following it to the moring line and waiting at the ball for the group to meet me there. After that, I would descend to 40 feet keeping an eye on the group; my instructor was at the rear of the group.
The current on this wreck usually runs from stern to bow, so there would not be much exploring given our plan.
All was fine until we reached the range of 80 - 100 fsw, then all hell broke loose. My mask was flooding uncontrollably, and I couldn't keep it clear. Everytime I inhaled, I felt the water wanting to trickle up my nose. To make matters worse, some of the students had difficulties equalizing, so my instructor attended to those who had problems, leaving my group to end up being bigger than originally planned.
I was not a happy camper. I found myself almost overbreathing my reg, and having to, as verbally as possible, shout to myself to SBTBA (stop, breathe, think, breathe, act). The night before I had read on RSD's "Lessons for Life" column about a diver who drowned on his first SW dive to a deep wreck, and of the DM who trying to save him, ended up dead also. The diver's body was never found. I was hearing voices saying "you're going to die" "your body will never be found" and on and on, but never saw the bright light. Guess that was good.
Luckily, I got a hold of myself, and finished the worst display of dive leading I've seen and never wish to repeat. The remainder was uneventful, but it did scare the bejiebers out of me!! Oh I almost forgot, there were lots of other divers on the wreck (it's a very popular wreck), and all decided to come up at the same time, and to make matters worse, up our moring line. The current was strong, and we were all flags on a post during our safety stop.
Lessons learned (or re-learned),
1. Don't dive outside of your comfort level. I have done plenty of deep dives; I have also led several other dives. This was my first deep dive while leading a group of divers, and I was suddenly faced with a responsibility I had not considered. My idea of the dive is that it was going to be a recreational dive, not a "working" dive.
2. Never take new equipment on a deep dive. Now I only dive new equipment after I've gone off the beach two or three times with it.
3. Dive with the gas you're comfortable, either by bringing it with you or getting it of the dive operator.
Rick.