You must take a scuba divers course if your goal is to become a cave diver. This course includes four scuba dives: the first is an outdoor practice dive, where you will learn the basic techniques of handling line and reel, avoiding silt-outs, and air management. Your instructor can also help you plan your dives and manage your orientation. You will be able, upon completion, to dive in caves or other caves that follow safety rules.
Safety
Cave diving safety protocols should follow the Rule of Threes. The Cave Diver should have three sources for light and at minimum two tanks. The gas should be divided into three different sections so that they can survive the dive. A more conservative gas management plan is preferable if the dive team is experienced and has a history of diving in caves. In addition to avoiding cave hazards, cave divers should practice safe diving practices.
Equipment
Cave diving requires the use of specific equipment. Two safety reels should be carried. One should be used as a guideline reel, and the other should be used during the dive. When preparing for a cavern dive, make sure that each diver has a safety reel with sufficient line to reach the cave's entrance and the farthest permanent line. Manufacturers will often pack the reels up to the edge with guideline when making a new reel. This makes them more susceptible to jamming. To avoid jamming, remove approximately 10 meters (30ft), of line prior to use.
Maximum penetration
TDI offers a cavern dive course designed for scuba divers that wish to dive in areas with limited vertical access. This includes caverns or overhangs. Although this is not required in order to participate in a cavern diver course, it will give you the necessary skills to make best use of this area. This course will help you navigate dangerously through the small spaces that are sometimes hidden from your eyes.
Maximum depth
There are certain limitations to cavern diving. You must never dive at night, and be aware of your limits. Additionally, cavern diving requires more advanced training than most other types of diving. You will need to be familiar with cave safety procedures and your limits if you are interested in diving in caverns. Before diving in caverns, you will need to have had some experience. Then, you can begin a journey into the world of cavern diving!