It's time for another installment but before I begin this time I should clarify: We did go over the knowledge review last time and again this time. There were also 2 quizes beyond those knowledge reviews. That's what I was referring to before.
DAY 2
Class began with more review from day 1 solidifying the fact that we understood the day one knowledge review and then watched another video. The video this time was quite long in comparison to day 1 and I found it informative as it summarized the reading again. We then, having read section 2 ahead of time, went through that knowledge review and wrote our 2 quizes (10 questions each) and that covered the days reading/video portion. We had quite a lengthy in class discussion on many issues including more elaborate dive logs and cases, the buddy system, the type of water and conditions to expect on our OW dives and what to expect. Things such as being prepared to have a full tank of air and burning through it quickly and sorting out buoyancy issues (apparently what noobs do). The instructors roles in regards to having to ensure we know what we're doing prior to receiving our c-cards was discussed in length. It seemed quite clear that they were not going to just sign off on us and collect the money. Liabilities and insurance were covered and the 2 women seemed to be on the ball and showed professionalism. As we live high above sea level and the lake we will be going to is even higher in altitude we got onto the topic of altitude diving and even dry suit diving as well.
I had a very specific question which apparently gets asked frequently which was: can you re-breathe your air from your BCD if you've lost your buddy and have an emergency and/or out of air situation. The consensus was that if that happened and you had no other choice then sure it's possible but you clearly didn't listen during class and/or follow any of the rules. We then went over the 4 steps that should have happened prior to that which were: always keep your buddy no further than an arms length away, check your air non stop, CESA (controlled emergency swimming ascent) and finally a buoyant ascent. Also, you may (most likely) be diving with a group so can likely get air from someone even if they aren't your buddy. I can appreciate these answers as if you follow the rules properly and are a good buddy there should never be a problem you can't safely resolve. However, I do feel the need to take extra precautions and as such will likely dive with either a pony bottle and/or spare air unit. The thought behind this is simple. If you have buddy separation for whatever reason and you are deep down (below 33 feet) and then have a malfunction not related to being out of air or careless then a redundancy system really could save your life. I'm sure others can relate to situations where they have had buddy separation and needed to surface to find them. You can only imagine what you'd do if you then at that moment had a problem.
After last class I had major buoyancy issues and sank like a cork and went to the shop to address these and found that I needed different equipment. This time round I ensured I got the right stuff and had a much more enjoyable time in the water. Off to the pool...
Once again we put all our gear together on the deck and prepped it for use, but before anything else we all assembled at the deep end, jumped in and began our lap test. 100m of swimming to ensure we knew how to swim and were capable of it. After that we stayed in the pool but only used our masks and snorkels and began some free diving. The point of this was merely to learn proper snorkel techniques and to keep our face in the water at all times. For proper snorkeling we needed to learn how to purge water in it and proceeded with a couple drills. First was simply to breath hold, go under the water come back up and exhale sharply. The other method was to breath hold, go under, then as we surfaced, we looked straight up and began exhaling just before surfacing so that once on the surface the snorkel was already clear of water. Airway control was used if there was any extra water remaining. We each had to do this 6 times before moving on and getting out of the water. We assembled on the deck and put our gear on and learned the proper techniques to putting on your weight belt and how to assist your buddy putting your BCD on out of the water. This time around was much easier. The regs etc went on quickly and effortlessly and all the straps were loosened this time prior to my attempt to don my BCD. Weight belt first, followed by BC/Tank, then mask/snorkel and finally fins at the edge of the deck. Before the fins we did our predive safety check (BWRAF) and then got ready to walk into the pool. Our entry method this week was the giant stride technique and we were instructed to hold onto SPG, mask and reg and walk in. I don't think a single person entered the water with any sense of grace as most tumbled or stumbled in. I wouldn't classify this exercise as a fail, but certainly worth trying a few times more
Today I was smart enough to bring my GoPro HD camera with me and got a nice long video of the entire session in the water. Videos to be seen on YouTube soon. I think before mentioning our skillset for the day it is a good idea to point out the regulator set I got this week sucked. I've had experiences with hard to breathe regs before and it's not to say this reg was too hard, but it was certainly harder than the one I used on day 1. I also found that it wasn't very balanced in terms of staying in my mouth with ease. It seemed bottom heavy and the top part was trying to roll out of my mouth almost the entire time. This certainly didn't help things and was quite tedious. Furthermore I found the hose to be too short as well. When I moved my head to look left it felt like it was being ripped out of my mouth. You can be sure I took note of what type of regulator it was and I will make sure I don't use it again.
(The reg was an AquaLung Titan LX)
Once we were in the water, we got our weight situations worked out and then we did some review of day 1 at the bottom of the pool. We did several mask clears as well as doing a regulator recovery. Once our instructor was satisfied we surfaced to begin the new drills. We started with a surface swim to the other end of the pool with our snorkel in, then switched to our regs, dove down and returned and then did a reg to snorkel maneuver. This was repeated about 2-3 times. Lots of surface swimming and lots of snorkel-reg-snorkel-reg-etc. Confidence was had by all. Our next skill was to remove our low pressure inflator hose from our BCD. Removing the hose is a cinch, replacing it, well not so much.
As I was not liking my reg so much the next skill was quite challenging. We were instructed to do a no mask breathe and although I did this by myself on day 1 I sure didn't like it this time around. We started on the surface with a partially inflated BC to get used to the feeling of having no mask on and putting our face in the water. Perhaps it was the angle I was doing this at but water in the nose did not feel good and I struggled quite a bit. I did finally manage to get this but much more practice is needed. We then went to the bottom of the pool and took our masks off to do a 30 second no mask breathe and then put the masks back on and cleared the water completely. While we were down there we then did the out of air exercise. To many, the next exercise is quite terrifying. We were to kneel on the bottom and keep breathing while our tank was shut off. Once we breathed the tank and the lines out we gave the out of air signal and our air was turned back on. I seriously had more problems with no mask breathing than this one. I felt quite relaxed.
Lastly, we surfaced to prepare for our oral BCD inflation exercise. After figuring out how to do this and why one might have to do this we went back to the bottom to do it underwater. As many would guess we all breathed in full lung breaths and most started to surface quite quickly. I managed to dump my air but the signal to return to the surface was given and were then told to use small breaths. Back down we went to try it again and this time all of us were much more successful. We used this technique to balance on our fin tips to get neutrally buoyant, after that, free swim time.
As I didn't feel like getting too far ahead this time I spent the rest of my time with the discover scuba class that was going on at the same time as we played with golf balls, underwater frisbees and underwater missiles/darts.
As a quick point of reference my Day 1 pressure was from 3000-1700 psi and Day 2 was 3000-1400 psi. I know we used more air to stay buoyant in the deep end with our BCDs but apparently I'm an Air Hog!!! Need to improve my technique and buoyancy although I do think this was partially due to a bad reg and me breathing alot quicker this time.
I think it is noteworthy to point out to all new students and those about to take this course that if you are dealing with rental gear (and you probably will be) to make note of what you use each time. Make note of what works, what doesn't and what feels the most comfortable to you. I have seen many threads on this board asking which gear they should buy and according to the book it's about comfort and fit and of course ease of breathing. I think there is no point asking people what they would use when you have a perfectly good opportunity to try this stuff out yourself. Be your own judge and buy what feels the best to you from the resources at your disposal during these classes and "test dives".
As we ended the day we actually did 2 more things. A one handed weight belt release was performed as well as a deep water exit. Much the same as last week we took our BCD off in the water and handed it to someone on deck. Finally, disassembly and rinsing was done and day 2 was now complete. See you next week..........