A little while ago I was teaching a CCR Cave course down in Tulum. Besides the daily driving it was definitely nice to teach in different places than I usually do. To change the air conditioned classroom and PC with the mosquito infested jungle and a white board didn’t appeal to me at first but having the water and breath taking nature right next to me had definitely its advantages!
My student was Enzo, an Italian Megalodon diver who had already plenty of experience diving CCRs and after having done plenty of deep and wreck dives finally became interested in cave diving. He also managed to combine his training with a relaxed vacation together with is girlfriend in a romantic hide away hotel right on the beach.
The first day we met with all the gear at Cenote Carwash (Aktun Ha) to start of with paperwork, some theory and gear configuration. It was also the first opportunity to chat about different point of views on CCR diving, Bailout strategies and dive planning. After agreeing on important points and trimming and streamlining the gear as much as possible it was time for the first splash. Checking if all the gear works and getting comfortable in the configuration and the new environment. Carwash is really a perfect place for that with its easy entrance and exit possibilities. The first session was only focused on buoyancy, trim, and fining techniques to create a stable platform from which we would be able to perform more complex tasks. At 6pm we left the water and it was time to pack up and head home.
Next day we were back in the same place, this time though less talking and more action. The day was split in two water sessions and a brake with some theory and dry line drills. First up we were working on the CCR related skills. Now most divers when they enter the course have a good understanding on the principles of the ccr skills but never tried to do lets say a diluent flush while staying in a horizontal trim and within an arms reach from the guideline. You also cannot lose your depth control while performing the exercise since that would mean crushing into the sediment covered floor or ceiling which could result in loss of visibility and the danger of damaging a vital part of your equipment. So the main goal of this session is to “cave modify” the already learned skills.
In the afternoon we were working on the cave related skills which added new things while still perfecting what was learned before. The exercises are dealing with zero visibility scenarios and are meant as well to teach the student to deal with task loading in stress full situations. Always with the eyes closed to train other senses and the means to navigate underwater in total darkness.
The next day, after some more line drills, we where finally ready, to depart on our first tour in the overhead environment. The first dive is always a demo dive where the student is walked through the pre dive checks and later shown how to use the reel and how to install the guideline. Being second gives the opportunity to observe and focus on buoyancy, trim, and propulsion techniques.
After surfacing and debriefing we stayed in the water to drop back down and run once more through the CCR skills while maintaining our position in regards to the line, the floor, and our team. Most accidents don’t happen because of a single problem but an accumulation. A key element in avoiding accidents is to cut the chain of errors as fast as possible before it gets out of hand.
After hours in the water we left, tired but happy and satisfied!
The fourth day of our training was here and we were off to a dive site south of Tulum which to cave divers is known as Naharon. A very dark but beautiful place just perfect for conducting training dives.
First dive of the day and the first time for Enzo to be the team leader. On the way out we simulated a zero visibility situation and exited using touch contact and touch and go communication. All in all a good success which just confirmed that all the time we had invested training in the open water was not wasted.
On the second dive we ran through some CCR skills, same as the day before, just this time in the cave in darkness. Bailing out gave us the first chance to confirm our calculations with real numbers from a simulated emergency.
After a day brake we were back at the Cenote for some more fun. On the first dive we repeated the bail out scenario and changed donor during the exit and then continued into a zero visibility simulation to further the complexity of the exercises and to simulate worst case scenario.
Second dive we introduced the lost line scenario after practicing it on the surface. Not on the first try but after conducting a systematic search Enzo found the line and I could here his enthusiastic scream into the mouthpiece.
We continued our training in Jardin Del Eden aka Ponderosa so that Enzo would have the opportunity to see a different type of cave. I generally do at least one dive in Tulum when I am teaching around Playa Del Carmen and Vis Versa.
This day we started complex navigation introducing Jumps, Gaps and Ts as well as techniques to negotiate restrictions with and without visibility. To round the whole thing up we had lost diver scenarios and CCR failures.
The last days we were back down in Tulum diving in Zazil Ha and Grand Cenote to further complex navigation, restriction training and completed an entire dive flying the unit manual amongst other things.
All in all a great course, fun time and awesome dives.
After that Enzo also booked some guided CCR cave dives to enjoy the caves without being hassled by an instructor all the time =) and to simply use the learned in real life.