Versions of this article have been published in the NACD and NSS journals, as well as on the techdiver mailing list.
by Jarrod Jablonski
Cave diving has undergone some significant changes during the last roughly 50 years of its evolution, yet few aspects of the sport remain more hotly contested than gear configuration. Dozens of styles have been marched out to center stage and purported to be the most effective, the safest, the easiest, the cheapest, or lately, even the most "technical". Some people have casually recommended one style over another, other have adamantly insisted upon their configuration, while still others advocate that one just do what feels good. How can one sport support such a variety of opinions and, perhaps more importantly, how is a diver to dim the clamor of opinions in order to make a sound and reasonable decision?
The most sensible way to make any educated decision is to gather information and evaluate which of the available options best satisfies your particular needs. Nearly all styles of gear configuration allow the average diver to access a cave. Even many an open water diver has returned unscathed from a poorly chosen venture into the depths of our cave systems, yet despite their safe return, consensus opinion holds that a certain minimum of equipment is necessary to safely penetrate into the overhead environment. It is how one should configure that equipment and what equipment to use that garnishes the lion's share of the sometimes bitter debate over equipment configuration.
The vast majority of equipment styles are most easily discussed in relation to one's placement of the long hose. Many different styles of equipment configuration exist and the proponents of each variation differ in their specific solution to the many details of equipment placement. The following two styles are the most popular divisions of hose placement. While many differences may exist within each group, the separation of the two primary groups largely pertains to one's belief as to whether the regulator donated to an out of air diver should come from one's mouth or from one's retaining device.
The most common style places the long hose in some type of surgical tubing or restrictive band. This band may be placed on the side of the tanks, near the manifold, on the back plate or nearly anywhere that suits one's fancy. Proponents of this style vary in their dedication to the refinement of their equipment placement, with many divers generally lacking a focus on reduction and cleanliness. However, a few divers practicing this style do begin to approach the Minimalism concept so obvious in the Hogarthian style.
The Hogarthian Style has many minor variations, yet its focus asserts a policy of minimalism. In other words, if it is not needed, it is a potential liability. The Hogarthian style strives to eliminate the unnecessary while configuring the necessary in the most streamlined manner possible. Named for it's founding father, William Hogarth Main, the Hogarthian style is constantly being improved and refined. Bill Main himself, despite nearly 25 years of cave diving, is invariably showing up at local dive sites with modifications and much can be learned from his dedication.
Despite the minor variation that exist within the Hogarthian diving community, one will find the strictest of its practitioners to be remarkably similar in their configuration. Perhaps the most extreme group of Hogarthian divers remains the Woodville Karst Plain Divers (WKPP), a group that has received considerable press (good and bad) for their dedication to the Hogarthian style. While the trademark of a Hogarthian diver is that they breathe the long hose and donate this hose to an out of air diver the style is really about much more. Regardless of an individual's preference for which hose to donate, much can be learned from the adherence to minimalism so central to the Hogarthian configuration.
Many divers appreciate that certain extraordinary dives may require a degree of refinement simply unnecessary for the average diver. Yet in much the save way space travel is merely a distant dream for the majority, the advances gained from this pursuit are abundant. How much of this refinement is reasonable or more importantly helpful? One's attention to detail should at least be proportional to the type of dives done, but that strict attention to detail couldn't hurt. If all your dives focus on the main line and your penetrations are modest, perhaps your idea of strict attention would be different. If your dives begin to incorporate stage diving and longer penetration then undoubtedly you should exercise a complimentary form of attention. In general, always be aware that you should look at the entire package as it functions together. Your equipment should be a cohesive unit that facilitates your dives and not a haphazard collection of available items.
Despite its growing popularity, many divers remain opposed to donating the regulator from their mouth. The following discussion reviews the most common resistance to donating the long hose from the mouth.
No review of the Hogarthian style is complete without a discussion of the system itself. It is not merely the streamlined nature of their equipment nor the use of the long hose that sets the Hogarthian diver apart, it is the way new pieces are carefully arranged to create a harmonious system. Your equipment must function cohesively and be configured so as to provide you with the greatest support - it is after all life support equipment. For example, let's assume that you have made the commitment to breathing the long hose. That decision, in and of itself must not be the end to your deliberation. In fact, it is really only the beginning. Where and how you store the balance of this length of hose and indeed how long it is are at least as crucial as your decision to use it as a primary. Most divers following this style have opted for the 7' length (nine is ridiculous and dangerous in most situations and 5' is precariously short in restrictive passages) and then run it under a hip mounted light canister across the chest and one half a loop around the neck into the mouth. This system is ideal in that it allows nearly five feet of hose to instantly be available and the remaining two to be deployed with a quick flick of the hand.
Do not try and wrap this hose around your neck multiple times (this may be quite dangerous) as its deployment will be time consuming and awkward. But why a hip mounted canister? This hip mounted canister allows for easy removal in the event of entanglement, visual verification (I prefer clear housings) to assure it is not a water cooled version, a shorter cord to deal with, and assurance of general stability. IN addition, the lack of a light swinging from the bottom of your tanks provides ample room to store reels and extra scooters and even provides an ideal place to tow a stranded diver during an aborted scooter dive. The hip mounted version is much easier to remove and replace and it reduces the number of times you set your 100+ pound tanks on top of it. Regardless of your chosen system, here are some general issues you need to consider.
Too many divers today seem under the impression that more is always better. In cave diving what is needed is better; what is not needed is a detriment. Equipment choice like most things is a cost vs. benefit analysis in which one must weigh the potential risk against the perceived benefit. The difficult part and in fact the thing that really defines a safe and effective diver is their ability to accurately evaluate the benefit while candidly weighing the acceptable risk.
I have discussed the placement of the primary light canister and the advantages of hip mounted operation but how about one's reserve lights. These lights could be stored in several places and many people find on the tank to be favorable. This system can appear fairly clean depending on the users dedication, but the lights may pull free in smaller caves and tangle in the line. When placed on one's harness below the arms they tuck neatly out of the way and are essentially snag free.
The primary light is an integral part of any divers equipment. Your light must provide ample illumination, be reliable, and allow flexible use. The test tube style light satisfies all these requirements and more. The light beam has excellent illumination properties, is simple to operate, has tremendous flexibility and when connected to a canister style light will provide stalwart reliability. The Goodman style that rests atop your hand allows for further flexibility as it provides the unencumbered use of both hands. A Goodman style handle allows just as much flexibility as the helmet mounted light yet does not blind your dive buddies and allows the diver to be more aware of their surroundings as the light is easily directed around the cave.
If you are scootering then you have a somewhat legitimate concern. You may choose one of the large dome style cages that appear to be solid protection but also have an annoying habit of wedging their owner in small places. Give the likelihood of a manifold failure I would much rather go cageless and remain flexible in smaller areas. If you use the smaller more streamlined version of the cage which substitutes curved metal guards above your regulators then I think you are fooling yourself. I have witnessed two people break their din regulators off at the manifold despite the presence of these protective devices. If, in fact, these devices are limited in their ability to accomplish what they were designed for than their large line catching profile is far more a risk than a benefit.
A person winded by a flight of stairs can certainly dive but their ability to manage stressful, air critical situations is limited by their physical response to elevated exertion. This may seem inconsequential in a leisurely dive but in an emergency it can make all the difference. Certainly excessive exercise could be a potential liability as scar tissue accumulation at the joints could reduce circulation. However, too much exercise is indeed a rare commodity.
The next decade of diving will undoubtedly be full of excitement and prodigious change. Undoubtedly equipment advancements will continue and many exciting advancements are bound to grace the diving world. Yet, regardless of the level of changed beyond the year 2000, two things will undoubtedly remain constant. There will always be new equipment for people to obsess over and there will always be people arguing over how that equipment should be configured.
The preceding discussion attempted to shed light upon some of the basic tenants within the Hogarthian equipment configuration. As pertains to equipment more is rarely better and the Hogarthian diver grudgingly makes additions to this minimalist attire. One should not take from this discussion the impression that safety equipment is dispensable and that the Hogarthian diver intentionally accepts additional risk. Quite the contrary, the Hogarthian diver attempts to remove all possible risks by designing a holistic life support system that facilitates every dive. The risk should after all be a function of the environment and not the divers state of preparedness.