SDI Solo Course Report

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jagfish

The man behind the fish
ScubaBoard Supporter
Scuba Instructor
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Location
Kanagawa and Florida
# of dives
2500 - 4999
For those who might be interested in hearing about the experience, I just returned from an SDI solo diver course in Thailand. From pervious threads, I know that there are strong feelings both ways about the practice of solo diving and the SDI training. If there are specific comments about aspects of the training, please discuss. But, regarding comments that are disparaging about the PRINCIPLE of solo diving or training for solo, why not start your own thread to voice those ideas. Many thanks in advance, and sorry for what I now see is a longish post…

The two-day course began with a full day of classroom study. This consisted of learning about solo doctrine and redundant systems, dive planning, navigation, contingency planning, emergency planning, and then some time “hands on” in the shop with various equipment that one may or may not have experience with (various BCs, Bp/w setups, octos, redundant valve systems, different pony configurations, deployable surface buoy designs, storage systems). It was a long first day, about 8 hours.

The next day, were two dives. Initially, we got a base SAC rate at 10 meters, then I had a chance to use some DSBs, and get a feel for the extra equipment I was wearing. Also took some time to get trimmed out with the pony in the rear, and then slung in front for a change of placement.

In the next step of the first phase, we worked on skills that consisted of loss of mask (requiring use of spare), breathing off a free flow reg, loss of primary air (required switch to redundant system), runaway BC inflation (required quick disconnect of inflator hose and venting), BC entanglement (which required removal of scuba unit to “free” oneself, then put on again). The instructor had cue cards which indicated these conditions, and I had to react. At depth, he would flash a card and I had to react. Then he began to flash groups of cards in rapid sequence: loss of mask, then a second later runaway BC, then loss of primary air. These sequences got faster and more complicated. Basically, the instructor tried his best to kill me (as a dressed rehearsal). It was quite exciting. I think he was also trying to find my limit.

After these stationary drills, we began a casual dive where he would ambush me by tearing off my mask or cutting air, or flashing cards in groups. I about reached my limit once. He tore off my mask, I replace it with the spare, then he indicated my primary air was gone, so I went to pony. Then he tore off my second mask, so I had none. Then he indicated entanglement, so I had to take off my scuba unit. Then immediately, he indicated stuck BC inflator, and hit my inflator button once. Well, I had no mask, was on the pony, had my BC off and then had the whole lot floating away up to the surface with me by the umbilicus. I caught it, and vented a bit of air, and tried to pull it back down, but I had not vented enough air. I should have vented more air, before pulling it back down but I didn’t, so I struggled more than I needed to and it took me more time than needed to get back into sorts. Lesson learned…

With that behind me, I had to do the last “checkout dive”. We went to a site where I was given a max dive time based on my SAC, site depth and main air (in rule of thirds), minimum air to come back with (1/3 or 70 bar), a max depth, and told where to come up. If the dive was overtime by more than several minutes, fail, if main air reserve was below 70 bar, fail, if max depth was more than 2 meters below that planned, fail, if diver surfaced more than 50 meters from boat, fail. Since I was in Thailand on a totally new dive site, I was most concerned about navigation, especially since visibility was total crap at the site. I managed to pull off the nav, and the other parameters are rather natural to control, so I completed the requirements. Last were a couple monster swims (****! Thought those were behind me with DM training!).:11:

The next day, I enjoyed my first day of solo diving in Thailand. It is now good to know that when I go to Thailand (or other places), I now have that option with SDI/TDI dive operators (as long as they offer the course, they have to offer the activity, in theory anyway). Before going, I also had confirmation with two of my favorite dive operators locally that with the card I can dive solo (now with their blessing;)).

JAG
 
The majority of my diving is solo and I have been curious about the solo classes. Sounds like the part you found most helpful was the practicing of the skills on day 2? What classroom things did they teach you that you did not have exposure to before? Did they have specific recommendations for gear and its set-up?

Just curious, what your current level of certification? How many dives do you have? Before the class how much Solo diving where you doing?
 
Some was new, some revision for me, but it was good to see it all in this context. The skills were great, likel not often most of us get to practice those sorts of things. Class was OK, too, but I am not much for sitting in a seat for 8 hours under any circumstances these days.

Especially interesting in class was the SAC calculations and air supply planning based on planned depth and dive duration. Not rocket science, but I have just not done that before. Probably the most valuable part for me.

Got to see and try out a lot of equiment I have not used before, including different SMB designs. There was a self inflating on that had kind of a spare air attached to it. Forget the maker, but that was slick. I had to deply an SMB before ascent. Came in handy on one of my dives as I was in a jet ski zone. However, I think they were using it as a slalom (sp?) post. Got to see different BP/W setups, singels doubles, hose configurations (DIR and non).

Had to have some pockets to carry the redndant equiment: extra knife, mask, computer, SMB and one each of: mirror, whistle, reel.

As mentioned, got to get the feel for the pony on back and slung in front. Heard good things about slung, but that felt too cluttered for me. Maybe I should try to get used to that as it does have some obvious benefits (including access). Trim did take some tinkering when on back.

As for prior expereince, PADI DM, under 150 dives, about half of those in drysuit.
 
Go going Jagfish.....look forward to joining your ranks soon. I need to finish Advance Nitrox and Decompression and Instructor first (as I have already started them). Also, will be back in Okinawa this month for a vacation....can't wait.
 
Out of curiosity, why would you dive thirds when solo?
 
Extra conservatism like in cave diving...
Although I take your point. Without an overhead barrier to keep you from going up, and with a pony at your side, why indeed. Errs on the side of the conservative, but in Solo that is the direction all preparation points to.

Why two masks or two knives, especially when in another thread many divers lamented ever buying one. I was even told that if one of my two computers malfunctioned it was reason to abort a dive. I questioned that point because it seemed that one would certainly be left with ample equipment to finish the dive safely, but that was rebuffed.

Anyway, once out of the classroom, everyone is ultimately left with thier own judgement...

JAG

JAG
 
I don't see the point in coming up with 2/3 of your tank if you're solo diving.

Do you actually plan to use 2/3 of your tank in an emergency in a solo open water environment?
 
jagfish:
As mentioned, got to get the feel for the pony on back and slung in front. Heard good things about slung, but that felt too cluttered for me. Maybe I should try to get used to that as it does have some obvious benefits (including access). Trim did take some tinkering when on back.
QUOTE]

I use 13 and 19cuft ponies on my back and larger ponies slung (then they are really deco tanks). A trick is to turn the valve DOWN (i.e. mount up side down) on the back mount to gain access to the valve and pressure gauge if you have one. Also I wear it on my right side and remove a 3lb weight bag in my right weight pocket. You probably figured this all out already except for maybe to mount the pony up side down on your back to gain the access.

--A
 

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