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Cave divers are required to carry 3 lights, a primary which is a waist-mounted battery canister connected by a power cord to a separate, compact light head; and two backups light. Nigh batteries and 10-watt or larger HID bulbs enable cave diving lights to be substantially smaller and lighter than predecessor. Burn time will vary from two to four hours. | |||||||||
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In our cavern diving courses, training focuses on modifying open-water equipment for use in both the overhead environment and greater functionality in open water. The cavern diving course will make you a more proficient all around diver in any environment. An example, would be these use of a wrist mounted computer preferred over the bulky, line-ensnaring consoles that are common to open water diving. | |||||||||
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For Single Tanks: H-values, as shown in the picture, have
an advantage when compared to Y-values, as they allow for the
use of DIN, having easier-to-operate values and may be
upgraded to manifolds for later use.
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For Double Tanks: The Dual orifice manifold allows for sale management of regulator failures. The use of this manifold allows the diver to breathe from two tanks at the same time. An isolator value in the center allows the diver to interrupt the flow of air between tanks. In case of a gas failure, the diver can shut down one regulator without losing access to the other tank. | |||||||||
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Redundant regulators provides
safety cushion and alternate air source for sharing air, one should be a
long hose.
High and intermediate pressure hose lengths should be shorter than those used in open water to aid in streamlining the diver and reducing the possibility of problems.
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The importance of a reel can't be over emphasized. Without the proper use of a guideline, even the most experienced cave divers would eventually become lost and ultimately, another fatality. Learning to use a reel and guideline is not a do-it-yourself proposition; it requires as much instruction and practice as learning to master buoyancy control - if not more so. A significant portion of Cavern-Cave Diving training should be devoted to the use of proper handling a guideline and reel. My students run guidelines continuously, allowing them to practice the use of a reel. We can show you the difference between a good reel and a superior one. The use of good reel can save your life! | |||||||||
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Some back-mounted BC's may be too bulky, have unnecessary quick releases, or not have enough lift capacity. | |||||||||
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Water temperature is 72 degree all year
round. However, the air temperature differs considerably during
the different seasons of the year. It is a rare diver who can be
truly be comfortable in anything less than a 7mm, farmer-john style
wetsuit with a hood. No gloves are needed. The 3mm
wetsuit is not adequate.
Cave divers need substantially more exposure protection since they go deeper and remain far longer than the recreational diver. Where the typical recreational dive seldom lasts longer than 30 to 40 minutes, cave dives can last up to 90 minutes or more -- plus decompression. If you are experienced in using a dry suit, then by all means do so.
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