Here are a few items you can include in your logbook to help you stay organized and honest, track progress, and work on self-improvement as a diver.
Prerequisites can be found in the Standards and Procedures for any course you are interested in taking.
With any sport or hobby, there are certain unwritten rules of etiquette we should all consider.
I’ve had the good fortune to be in the company of some of the most respected overhead divers/instructors/instructor trainers spanning the globe.
There is always something to learn, and an intense focus on improving skill sets and better understanding dive theory can help any diver perform more efficiently in the water on almost any type of dive.
Cave divers use a distinct set of markers to determine direction and distance traveled in a cave.
I constantly have to remind myself that gushing about my new dive toys to my friends at lunch will only be met with confused facial expressions, while discussing teenage gossip with a group of seasoned divers will have the same result.
With a DPV, as with overhead environments and rebreathers, a diver must master the basics first and foremost
Don’t get lost cave divng. Read one man’s story about how he almost ran out of air cave diving.
The only plan we had when TDI Instructor Trainer Ben Reymenants asked us to join a trip to Chiao Lan lake’s floating rafthouses was to do nothing at all; read a book and relax for a couple of days on the water. The group we went with was packed with cave divers and students ready to explore the secrets that hide inside the local caves. Our initial plan was to tag along and make one or two dives to peek into the dark abyss in front of the cave. Well, it didn’t turn out as planned. Curiosity got the better of us and we decided to enroll in the cave diving course. I’m fairly certain Ben knew that all along because he had equipment ready for us to use.
Dark as a night; one only sees the wide light beam emitted by the torch held by your small shaky hand. There is a good chance that you may not see your own light if the diver in front of you decides to stir up some sediment. That’s why you have to obey the one golden rule – no matter what happens or what you are doing, never ever lose your guide line. It just so happened that somebody (not pointing fingers) gently removed our masks and as you might know, seeing underwater without a mask is a bit complicated. Here we go, now it’s time to start exiting!
You must be certain the direction you’re going is the right way out. If you lose the line, you’re in trouble. By holding the line and feeling the previously placed directional markers on it, we started slowly moving towards the exit. Usually when something goes wrong other things that were good until this point start to go wrong as well. It becomes a downward spiral. For example, you may run out of air in addition to zero visibility. That’s another reason to have a good teammate in there which is why I think cave diving is more teamwork than a marriage.
It’s not an ego thing that demands a cave diver to be in good shape. You need to be able to swim long distances without getting tired. Inside a cave, you no longer have the option to go up when you would like to end the dive. As far as you swim in, you must be able to swim out.
There are thousands of years of history recorded in the caves. The caves in Chiao Lan are formed by acids found in the ground and rainwater that dissolved limestone and made cracks in it. It takes thousands of years more until cave systems are formed until, for some natural or artificial reason, the caves are flooded and become home to a very unique ecosystem.
There are stalactites hanging down from the ceilings revealing time stamps and stalagmites grow from the floor like trees. There is almost no vegetation and fauna is quite scarce. You can find some near blind cavefish that may bounce off you during the dive because of they don’t see you (obviously), along with white crabs and lobsters, mustached catfish and snakehead fish dating back to ancient times.
During the last couple of years, it seems I constantly have to test my limits. Like now – I didn’t know anything about cave diving but Ben Reymenants and Paul Kirby taught us the skills necessary to navigate in the caves, deal with entanglements, find the exit in zero visibility, and much more. Over the time I’ve developed some sort of peace and mindset that I’ll do the things as well as I can. A cave diver has to know how to lay a line and tie knots because the line that leads you into the cave is like an umbilical cord; it’s your lifeline that supports you. I practiced my lifeline skills a lot during that week, invented some totally new knots and mastered the known ones.
Tuuli Piirsalu is working as organization development manager for Daimler Financial Services in Singapore. Before urban life she worked as a diving instructor in Egypt, Maldives and Thailand.
Contact SDI TDI and ERDI
If you would like more information, please contact our World Headquarters or your Regional Office.