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  • June 16, 2023 1:36 PM | Howard Ratsch (Administrator)

    Deploying a Safety Sausage

    By Barry & Ruth Guimbellot

    Deploying A Safety Sausage - Scuba Skills | Dive Training Magazine (dtmag.com)

    This article represents the views of the author.  The article has not been fact checked by myself, the Board of Directors or any member of the USA Dive Club.

    Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

    ONE ESSENTIAL PIECE of accessory equipment every diver needs to carry is the “safety sausage” or surface marker buoy (SMB). This device may also be referred to as a DSMB (delayed or deployable surface marker buoy). The purpose of these buoys is to help you be located quickly and easily during and/or after a dive. Knowing how to deploy an inflatable buoy is important, so let’s get started.

    Safety Sausage Basics

    An SMB or safety sausage can be any type of buoyant object used to indicate a diver’s position — a ring buoy, a large round float or a diver down flag mounted on a float and pole, for instance. For the purposes of this article, the SMB we’re describing is a portable, inflatable tube ranging from 3 to 6 feet (1 to 2 m) feet in length. SMBs come in bright colors, enabling boat crews and fellow divers to locate your position. Common colors are orange, red, pink and yellow. In some locations, yellow is reserved for emergencies. If you intend to use a yellow buoy, let your boat crew and dive buddies know so they will not mistake it as an emergency signal. The SMB may or may not have an attached line and spool/reel.

    A DSMB must have an attached line and spool or reel to be used to mark a diver’s location underwater. In some instances, divers deploy and tow a DSMB throughout the dive. In other instances, the DSMB is deployed near the end of the dive, usually as the divers prepare to ascend to safety stop depth.

    A typical SMB consists of an inflatable tube outfitted with a valve used to inflate the tube by mouth or a valve that accepts a low-pressure inflator hose. Larger SMBs have dump valves to deflate the tube after use or to allow air to escape to avoid over-pressurization as the tube rises to the surface.

    BYOB. In this instance BYOB means, “Bring Your Own Buoy.” Every diver should equip with his or her own personal SMB when diving in the ocean or other large body of water — especially when diving from a boat. In the event that buddy teams become separated, each diver can inflate their own buoy and get seen — and reunited — sooner.

    An open-cell safety sausage tube opens at the bottom so it can be inflated with a second-stage regulator. With this type of tube, the opening must remain below the surface to avoid air from escaping, thus deflating the tube. When inflating this type of tube, be careful not to entangle the regulator in the opening.

    Most SMBs have reflective material on the tube, which is useful at night when using searchlights. For additional safety, some reflectors are visible to radar. Tubes also have a D-ring or similar connector to attach a line and spool/reel to the tube. The SMB typically has a strap to keep the tube rolled up when not in use. Some tubes also have a D-ring located on top to attach a strobe light or light stick. Some models come with an accessory pocket.

    When selecting a buoy, ask the pros at your local dive center for assistance. They can help you select the right buoy, line and spool/reel and other accessories such as clips and straps that will be suitable for the type of diving you intend to do.

    Using a Buoy

    Again, the main purpose of the SMB is to make you (or your position underwater) more visible to those on the surface. When live boating — diving from a boat that does not anchor — the SMB is especially useful if deployed while you are performing your safety stop or preparing to begin your ascent. By the time you surface, the boat can be nearby ready to assist you back onboard.

    When night diving from shore or a boat, shining a light up through the bottom of the SMB tube provides a glow that is easily seen by fellow divers. If the tube does not open on the end, hold your dive light near the side to light up the tube.

    The line attached to your DSMB can also be a handy reference for your safety stop. For example, tie knots in the line at about 15 and 20 feet below the bottom of the tube. When rewinding the line as you ascend, the knots in the line will indicate you are at safety stop depth. The reference mark is especially useful when in limited visibility or diving at night. (Always use your dive computer and/or depth gauge for accuracy.)

    The DSMB can also be used underwater to mark a spot on the reef, providing divers with a needed reference point. If diving from shore, the DSMB can designate the starting point to return to at the end of the dive. In either case, the tube will be partially inflated and the line unrolled a few feet/meters. The line and spool/reel will need to be anchored using a lead weight or tied off to a rock or other fixed, nonliving underwater feature.

    Tips for Deploying a Surface Marker Buoy

    You may find it easier to retrieve the SMB tube from your buoyancy compensator (BC) pocket or D-ring when at safety stop depth or deeper. By doing so, you will not have to contend with waves or surface current.

    First, get neutrally buoyant, look up and around you to assure it is safe to deploy the buoy. Next, unfurl the tube. Unclip the snap or other connector holding the line in place on your spool/reel. Once the line is free to unroll, reconnect the snap to the line where the clip moves freely. Hold the line/spool out in front of you to avoid entanglement. Take a breath of air from your regulator and with your right hand remove the regulator, push open the valve and then blow air through the valve into the tube with your mouth to partially inflate the buoy. Do not attempt to fully inflate the tube at depth. (Remember, the air inside the tube will expand as the tube ascends.) One large breath is usually enough.

    An SMB with a tube that’s open on the bottom can be inflated by adding air from the second-stage regulator (or octopus regulator) into the tube. Simply invert the regulator beneath the open tube and depress the regulator purge button briefly.

    After rechecking your buoyancy and position, place the line/spool between the thumb and index finger. Be careful not to place your finger inside the center opening in the spool. As the tube is released, keep tension on the line so the tube remains upright.

    As you ascend, continue to keep tension on the line. Hold the line in one hand and hold the spool on its side with the other hand. Using a circular wrist motion, roll the slack line onto the spool. Do not attempt to spin the spool to wind the line. Keep tension on the line and wind the spool until all the line is secured as you reach the surface. Use the snap to secure the line and prevent it from unrolling.

    Check the area to make sure you’re not in the path of boat traffic, then fully inflate your BC and keep a regulator or snorkel in your mouth. At this time, you can clip the spool to your BC. Continue to hold the inflated buoy until the boat arrives or until you complete your swim to shore.

    A safety sausage should be considered an essential accessory item to have with you on every dive. This small piece of gear plays a large role in keeping you safe while enjoying your favorite sport.


  • May 21, 2023 11:17 AM | Howard Ratsch (Administrator)

    Can We Create A Safety Culture In Diving? Probably Not, Here’s Why.

    by Gareth Lock

    This article represents the views of the author.  The article has not been fact checked by myself, the Board of Directors or any member of the USA Dive Club.

    Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

    How do we improve our safety culture in diving? Is it indeed something that we as a community of divers can affect? Human factors coach Gareth Lock argues that there is no magic bullet and, in fact, that the sports diving industry needs to make a fundamental shift in how it manages diver safety, if we are to improve safety. In other words, we still have a ways to go. The retired British Royal Air Force officer explains why.

    Use the link below for the complete GUE article

    Can We Create A Safety Culture In Diving? Probably Not, Here’s Why. - InDepth (gue.com)


  • April 22, 2023 10:06 AM | Howard Ratsch (Administrator)

    Educational Blog

    This article represents the views of the author.  The article has not been fact checked by myself, the Board of Directors or any member of the USA Dive Club.

    Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

    Hal Watts: Plan Your Dive

    Known for his deep air diving exploits back in the day, 86-year-old Hal Watts, aka “Mr. Scuba,” is one of the pioneers of early scuba and credited with coining the motto, “Plan Your Dive. Dive Your Plan.” He founded the Professional Scuba Instructors Association International (PSAI) in 1962, which eventually embraced tech diving, but never relinquished its deep air “Narcosis Management” training. Italian explorer and instructor Andrea Murdock Alpini caught up with Watts and teased out a few stories from the training graybeard.

    Please use this GUE link below for the full article.   Interview by Andrea Murdock Alpini   

    Hal Watts: Plan Your Dive - InDepth (gue.com)

  • March 18, 2023 2:18 PM | Howard Ratsch (Administrator)

    Educational Blog

    This article represents the views of the author.  The article has not been fact checked by myself, the Board of Directors or any member of the USA Dive Club.

    Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

    What defines a risk? What is involved in taking a risk?

    Difficult questions to answer, because something that feels risky to one person might be yawn-worthy to another. Risk taking, unscientifically, is something you do that gets your blood up, raises your heartbeat, awakens your senses, and makes you hyper-aware of your surroundings.

    Surely we can agree that the Covid pandemic has added an unexpected level of risk to everyday life. Add poor drivers, mass shootings, contentious politics, global climate change, and many are left believing that meeting each day is risky enough. But that’s not true for people who identify as risk-takers or thrill-seekers.

    “Everyone has a ‘risk muscle’. You keep in shape by trying new things. If you don’t, it atrophies. Make a point of using it once a day.” – Roger Von Tech

    There are many activities that go to the trouble of defining the level of risk involved with a specific activity, and while that’s not the purpose of this article, you should know that scuba diving ranks fairly high on the risky behavior scale–higher than skydiving and rappelling. And, cave/wreck diving or freediving isn’t on any risk scale we could locate. We can assume it’s up there—near or at the top.

    Please use this GUE link below for the full article by   Pat Jablonski

    Risk-Takers, Thrill-Seekers, Sensation-Seekers, and … You? - InDepth (gue.com)


  • February 22, 2023 7:58 AM | Howard Ratsch (Administrator)

    FIVE REASONS WHY FISH IDENTIFICATION IS AN IMPORTANT SKILL

    By Jill Hottel

    Fish Identification and Why it's an Important Scuba Diving Skill (tdisdi.com)

    This article represents the views of the author.  The article has not been fact checked by myself, the Board of Directors or any member of the USA Dive Club.

    Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

    WHY IS FISH IDENTIFICATION IMPORTANT?

    If you surveyed 100 recreational divers about the top ten most important skills for a diver, I don’t think fish identification would garner many votes. True, finning techniques or navigation may seem more important but don’t discount fish ID – it’s my favorite skill to teach as an instructor. Here are five reasons why you should put the work in to improve your fish ID skills:

    1. Fish identification is low and slow

    In 2009 I traveled to Manzanillo, Mexico, to become a dive professional. My first instructor there taught me to look for the small stuff. Thus, I learned to dive as close to the bottom as possible without stirring it up…I had to get close to see what I was looking for. Blennies. To do this, of course, I needed to dial in my buoyancy and trim so I didn’t come crashing down onto the reef or drag my gauges across the top. Blennies are cute, odd-shaped bottom dwellers that burrow in the seafloor or inhabit crevices on the reef or rocky substrate. You can find them poking out of their hidey holes, with their mouths agape trying to communicate that you are encroaching on their territory. To me, it looks like they are talking. Perhaps shouting out, “Hey! Did you hear about what went down at the cleaning station the other day?” I like to get close to them…almost nose-to-nose…and say hi. Some species are a mere inch in length, but all of them have an outsized personality.

    Fish ID is also slow. If you power fin over the reef, you’ll miss the fish. Not only will you be going too fast to focus on them, you’ll likely startle them by disturbing the water column driving them deeper into the reef or back into their hidey holes. The slower you go the more you’ll see – you’ll be less intrusive moving through the water, and fish will be less startled by you. This also plays to your advantage if you are a photographer, because you’ll have more time to photograph your subjects.

    2. Fish ID helps you develop keen observation skills

    You don’t have to know the names of the fish to excel, you just have to make observations on their anatomy and distinctive features (i.e., shape, color, pattern) – being able to describe the fish you’ve seen will allow you to effectively describe them to someone else (like the dive guide) or enable you to look them up in your fish ID book. The more you practice, the more you’ll observe, all of which are clues to identifying the fish. What shape is the body…does it have a sloping head, kind of odd-looking, or round like a dinner plate? What stands out…does it have big, juicy lips, or is it primarily red in color? What did you observe about its behavior…is it free swimming or does it hug the bottom?

    My old logbook entries are funny because I’d make up names for the fish I’d see – such as black and tans (bicolor damselfish) or LSU fish (fairy basslet). Or I’d write a detailed description of the fish…like the “fish that lies flat and looks like sand” (peacock flounder) or “silver ones/red on back with bulging black eyes sitting in groups of 3-4 weird” (squirrelfish).

    3. There’s always something new to see, if you know where to look

    There’s a sign in Fife, Scotland, that reads, “Tak tent o sma things” – it translates to “pay attention to the small things.” That’s what I think after I take my giant stride, once I’ve arrived at depth and am beginning my dive. Keep your eyes open, and pay attention to the small things. What do I see? What is unfamiliar? Throughout my dive I keep my eyes peeled – looking under, behind and inside the reef – hoping to spot something new to me…some fish I’ve yet to identify. I never come out of the water disappointed.

    Several years ago, I met a diver at his office where he had video footage from a recent dive trip playing. Mesmerized, I asked him about his trip and the diving. Disappointedly, he said he’d never go back there again because he didn’t see anything. “No sharks, turtles. Nothing.” As Mr. T would say, “I pity the fool.”

    It’s true, most divers enjoy spotting an apex predator and singing the Jaws theme song to themselves (I’m not the only diver who does this, right?), or watching turtles glide across a reef. But to say that there was nothing to see because you didn’t see a shark or turtle is absurd. There is a seemingly endless array of small marine life to enjoy in our oceans, you just have to look for it. It helps to readjust your thinking by focusing on the abundance of the small things.

    4. Fish identification is empowering

    You know that feeling when you arrive to a party, walk in and start picking out all the people you know…you get the same feeling when you drop onto a reef and start identifying the fish residents. Not only recognizing them, but naming them. Or better yet, when you’re back on the boat and another diver asks, “what’s the name of that rainbow-colored fish I saw munching on coral and pooping,” and you come in clutch with the answer, “Oh, that sounds like a rainbow parrotfish.” It’s a great feeling to have an answer, and to be able to share your acquired knowledge with a fellow diver. What’s even more satisfying is being familiar with what you see underwater and feeling connected to it. This growing familiarity empowers a diver to want to see and learn more, encouraging them to seek out new underwater experiences.

    5. Fish ID is a lifelong pursuit 

    There are so many fish in the sea that you’ll never know them all. And even if you become an expert fish IDer in, say, the tropical Western Atlantic, you can always travel to the other side of the world and start learning the fish in the Indo-Pacific. While the classification scheme is the same across the globe, you’ll encounter different species depending on where you are. There are always new fish to see, which means you will always be on the perpetual journey of exploration.

    SO, HOW DO I GET STARTED WITH FISH IDENTIFICATION? 

    Fish ID is something you can work on on your own – start with a good fish resource (such as these books from New World Publications) or visit Reef Environmental Education Foundation to view their variety of learning resources dedicated to building your fish ID knowledge. You can also visit your local dive shop and sign up for SDI’s Marine Ecosystems Awareness specialty course. This course will not only cover fish ID for the local area, but also builds a diver’s understanding of marine and freshwater environments, highlights the risks they face, and identifies ways divers can contribute to their conservation.

    About the Author

    Jill Hottel (Instructor #32568) has been diving since 2000 (that’s more than half her life!). She serves as the executive director of Diving with Heroes, a nonprofit that provides disabled veterans with opportunities to scuba dive. She is passionate about fish ID, and she shares that passion with all her divers. Her favorite fish are the whale shark, yellowhead jawfish, frogfish and (of course) blennies.


  • January 23, 2023 2:00 PM | Howard Ratsch (Administrator)

    Trouble at 100 Feet | Lessons for Life

    A medical emergency underwater puts a diver in crisis.

    By Eric Douglas April 16, 2021

    This article represents the views of the author.  The article has not been fact checked by myself, the Board of Directors or any member of the USA Dive Club.

    Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

    Ted was stoked to begin his training as a rebreather diver. He had been working toward this goal for several years, building up his dive experience and researching the best unit for his needs. Now he was nearing the end of his first tec closed-circuit rebreather diving course.

    He was a bit uncomfortable, struggling to catch his breath, but he chalked it up to nerves and getting used to the closed-circuit device.

    The Diver

    Ted was a 51-year-old male and an experienced, certified diver. He had reached a personal income level that allowed him to travel more. He wanted to up his dive game by learning to dive with a rebreather system. He looked forward to the extended bottom time the device provided, along with the ability to move silently through the water. As an avid underwater photographer, he hoped it would help him get closer to sea life so he could capture critters in their natural state.

    A year earlier, he had consulted a local dive instructor about what he needed to do to get rebreather certified. Since then, he had been working toward the goal, logging hours underwater and practicing his diving skills.

    The Dive

    After reviewing the techniques unique to diving a rebreather system in a pool, Ted, his dive buddy and their instructor made their way to open water for a series of checkout dives. Conditions were good on the ocean as they entered the water from a local charter boat that was accustomed to working with technical divers.

     The boat and its crew didn’t have a problem with them making long, deep dives, and everyone on board was a tec diver. Ted’s group planned the dive for 90 minutes at a max depth of 130 feet of seawater. They made their way gradually toward the final depth, descending along the reef structure.

    The Accident

    The divers had been in the water for 45 minutes, slowly making their way to their planned maximum depth. At 97 feet, Ted began struggling to breathe. He signaled that he was having trouble with his rebreather unit and indicated he needed to ascend to the surface.

    One hard and fast rule of technical diving is that any diver can call any dive for any reason.

    When Ted indicated he was having a problem, the instructor immediately agreed that they should end the dive. All three divers began ascending toward the boat. On the way, Ted lost consciousness. The group had obligatory decompression time, but they ignored it and continued toward the boat to get Ted the help he needed.

    The boat crew immediately began lifesaving procedures, but Ted could not be resuscitated.

    Analysis

    An after-accident analysis of Ted’s gear indicated his rebreather system was working normally. The equipment wasn’t to blame for this dive accident. Although the group omitted decompression on the way to the surface, that wasn’t the cause of this accident either. Ted’s problems began at depth. Neither of the divers with Ted exhibited any symptoms of decompression sickness because of the omitted decompression, although they did not return to the water and were observed for the rest of the day to make sure no problems arose. After performing an autopsy, the medical examiner determined that Ted had a cardiac event underwater. He had dilated cardiomyopathy, hypertensive heart disease (high blood pressure) and coronary atherosclerosis (hardening of the arteries). He was also obese and had a medical history of sleep apnea. A dilated cardiomyopathy is a weakening of the heart’s primary pumping chamber, the left ventricle. This can be caused by a variety of conditions, including coronary artery blockages, long-standing high blood pressure, diabetes mellitus and viral infections. In fact, in a large percentage of cases, doctors are unable to determine the underlying cause of the condition. Regardless of the cause, this weakening of the heart muscle can result in a multitude of problems, such as fatigue, shortness of breath and life-threatening heart-rhythm abnormalities .There is a special concern for divers with dilated cardiomyopathy. When humans are immersed in water (swimming or diving), there is a fluid shift of about 700 cubic centimeters (about 1.5 pints) from the periphery to the central circulation. In patients with dilated cardiomyopathy, this additional fluid load might not be tolerated by the heart, resulting in symptoms of severe shortness of breath from congestive heart failure. While we will never know for sure, this is probably what happened to Ted.In preparation for learning to use the rebreather system, Ted spent a lot of time diving and working on his underwater skills. He also studied the physics of mixed gases. What he didn’t focus on was the physiology of diving and preparing his body. What is important to remember is that diving, be it on open-circuit scuba or a rebreather, puts additional strain on the body. Water provides more resistance than air, so your body has to work harder to move. Your breathing is somewhat restricted, and you might need to exert yourself if, for instance, you are caught in a current and have to swim harder to get back to the boat. Additionally, having a cardiac event underwater or on a dive boat makes it much more difficcult to get to emergency medical care. At your local mall, you can expect to receive bystander care within moments. Emergency medical services will likely arrive with a full range of equipment and medicine to stabilize you before you get to the hospital, likely in less than 10 minutes.

    On a dive boat, even with the best-trained crew available, there will be delays getting you out of the water and out of your gear before care can begin. And then there are longer delays getting you to advanced medical care. We don’t know if Ted knew about his heart condition; it’s likely he did not. His doctor had diagnosed him with high blood pressure and sleep apnea, but Ted wasn’t controlling either condition well. All of that reinforces the importance of being physically fit for diving. Ted was 51 years old, but his medical history indicates that he probably should have had a conversation with his doctor about diving and what those conditions meant to his overall health. During his year of preparation for technical diving, he should have spent more time training himself physically and managing his health complications.

    There is a possibility that if Ted had been given a stress test, an echocardiogram and a complete physical, a diving physician would have told him he should consider giving up diving. While that choice might be unthinkable to some, the idea of dying on a dive boat, putting your dive buddy at risk in the process, is inarguably worse.

    Douglas Ebersole, M.D., consulted on this column. He is an interventional cardiologist at the Watson Clinic in Lakeland, Florida, and the director of the Structural Heart Program at Lakeland Regional Health Medical Center. Additionally, he is a cardiology consultant to Divers Alert Network, as well as an accomplished diver and closed-circuit rebreather instructor.

    Lessons for Life

    • Stay fit for diving. Exercise regularly, and manage your weight.
    • Taking medication does not necessarily prevent you from diving. Rather, the underlying condition the medication is intended to treat is the concern.
    • Consult a physician familiar with diving to ensure you are fit to dive, especially if you have any medical conditions thought to be a contraindication.
  • December 22, 2022 11:31 AM | Howard Ratsch (Administrator)

    Educational Blog


    A Brief HISTORY OF SCUBA’S Ubiquitous Aluminum 80 Cylinder

    By Mark Gresham and Bill High. 

    This article represents the views of the author.  The article has not been fact checked by myself, the Board of Directors or any member of the USA Dive Club.

    Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

    The “80” had a down-side. At 3,000 psig/207 bar, that pressure was a bit high for most compressors in use. Many dive stores could not fill them completely. More importantly, its diameter was slightly greater than the common steel cylinder, so it would not fit into the non-adjustable backpacks.

    Alcan (Luxfer) was not the first to make an aluminum scuba cylinder. In the mid-fifties, the US Navy purchased many aluminum cylinders from Pressed Steel Tank Co. which were not Interstate Commerce Commission (ICC) approved for commercial use. Those cylinders were made by a spinning process that required a plug to close the round bottom. By the 1970s, some of those cylinders found their way into recreational diving; however, they were illegal to fill or transport.

    For several years, the Luxfer “80” was the only kid on the block. In 1981, the competitors Walter Kidde Co. and Catalina Tank Co. began making competitive cylinder models using the somewhat different alloy, 6061. 

    The bright future for the “80” continued into the 1980’s. Adjustable backpacks solved the size issue. Corrosion resistance was evident. Several colors were available. There were two things we did not know. First, in 1982 and 1983, Luxfer produced its cylinders using the 6351 alloy with a somewhat elevated trace lead content. That became an issue later. Catalina and Kidde continued using 6061 alloy. Secondly, a metallurgical issue raised its ugly head.

    For the complete GUE article, Please use the link below

    A Brief History of Scuba’s Ubiquitous Aluminum 80 Cylinder - InDepth (gue.com)

  • November 22, 2022 5:30 PM | Howard Ratsch (Administrator)

    This article represents the views of the author.  The article has not been fact checked by myself, the Board of Directors or any member of the USA Dive Club.

    Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

    Going Deep

    By Jon Hardy

    Setting the Stage

    Jerry was an occasional diver who made most of his dives when traveling on vacation. Being single, he usually traveled alone, but sometimes a non-diving friend joined him.

    While on an island vacation, Jerry found a dive operator offering a mid-week deep dive to an offshore rock pile that featured black coral and rare fish. Although Jerry had not been diving recently, when the dive operator asked about his dive experience, Jerry implied that he had much more experience than he actually did and signed up for the advanced dive.

    The dive plan was first to anchor the boat in the sand beside the rock pile. Next, after a thorough briefing, the divemaster would lead the six divers down the anchor line, and then put a lift bag on the anchor to make retrieval easier. The divers would then explore the site. After 10 minutes in warm, clear, calm waters, ranging in depth from 135 to 150 feet, the group would proceed up the anchor line, making a decompression stop and a safety stop, and then head back to the boat. A hang tank would be provided at 15 feet in case anyone ran low on air during the stops.

    The Dive

    The first sign of difficulty came when Jerry arrived at the dive store the morning of the dive. The divemaster for the trip discovered that Jerry needed to rent much of his gear and that he had no dive computer. Then, on the trip out, the divemaster thought that Jerry's excessive chatter about dives he had made did not ring true. But, by this time, the divemaster felt he needed to press on with the dive.

    The anchoring and briefing went as planned, although the current was stronger than the divemaster had planned for. Descending on the anchor line was a bit more work than expected, but all the divers arrived on the bottom, gave the OK sign and proceeded to explore the near side of the rock pile, which was the lee side, out of the current. Meanwhile, the divemaster set the anchor and attached the lift bag. Jerry had swum off to the deeper end of the rocks at 145 feet, but was still in view.

    After a couple of minutes, when Jerry had not returned to the group, the divemaster swam to him and found him motionless, unconscious and not breathing. The divemaster grabbed Jerry, towed him to the anchor line and started to ascend, abandoning the other five divers.

    Because the current was strong and Jerry was not breathing, the divemaster skipped the stops. As soon as they were on deck, CPR was started. Efforts to revive Jerry failed, and he was pronounced dead at a local hospital.

    Analysis

    What most likely befell Jerry is known as deep-water blackout, a little understood and fortunately relatively rare accident. Deep-water blackout most often occurs during dives beyond 130 feet on air, and to divers with little or no experience in the particular demands of this type of diving. Deep-water blackout may be related to fitness, narcosis, gas density, carbon dioxide retention and breathing resistance, but none of this is clearly understood.

    Lessons for Life

    • Scuba diving takes practice to keep skills fresh. Refresher and advanced courses are ideal for this.
    • Be honest with yourself and others concerning your diving experience.
    • Do not engage in deep or decompression diving unless you have the training and experience to do so. Some training agencies now offer training in extended-range diving--diving beyond the usual recreational limits.
    • If you are going to make serious or demanding dives, you should have your own high-performance regulator, instruments (including both a dive computer and a compass) and BC.
  • October 20, 2022 7:24 PM | Howard Ratsch (Administrator)

    Educational Blog

    This article represents the views of the authors.  The article has not been fact checked by myself, the Board of Directors or any member of the USA Dive Club.

    Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

    DIVING SAFETY

    Don’t Panic: Understanding the Causes and Remedies of Diver Panic

    The “Hitchhikers Guide to The Galaxy” summarized it neatly: Don’t Panic! For good reason: taken together panic/anxiety/stress have been ranked as one the top three risk factors in scuba diving incidents. Here clinical psychologist and scuba instructor Laura Walton dives into the definition and causes of panic, explains why seeking to avoid panic can make matters worse, and offers effective strategies to consider.

    A handful of studies suggest that as many as a quarter to a half of qualified (i.e. open water or higher) recreational divers have experienced panic or near-panic on at least one occasion (Colvard & Colvard, 2003; Morgan, 1995). 

    Please use this GUE link below for the full article by Laura Walton

    Don’t Panic: Understanding the Causes and Remedies of Diver Panic - InDepth (gue.com)


  • September 22, 2022 6:07 PM | Howard Ratsch (Administrator)

    Sustainable Tourism and Diving: Tips for Treading Lightly - Dive Training Magazine (dtmag.com)

    This article represents the views of the authors.  The article has not been fact checked by myself, the Board of Directors or any member of the USA Dive Club.

    Copyright Disclaimer under section 107 of the Copyright Act of 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.

    Sustainable Tourism and Diving: Tips for Treading Lightly

    Story by Alex Brylske
    November 20, 2019

    If you’re a diver, here’s a little tidbit I’ll wager you’re completely unaware of: Did you know you’re an “adventure tourist?” Indeed, you are — at least according to the travel industry. In fact, scuba diving and snorkeling are specifically listed as adventure travel activities by what may be the top expert in the field — the Adventure Travel Trade Association. They define an adventure tourist as anyone engaged in a travel experience that involves at least two of three elements: 1) physical activity; 2) the natural environment and 3) cultural immersion.

    But before venturing further on the adventure tourism path, let’s look first at travel and tourism in general. In terms of both direct and indirect impacts, tourism is a major contributor to the global economy. The international tourism industry generates nearly one trillion dollars annually and comprises 30 percent of the world’s exports of commercial services (six percent of total exports). According to the World Travel and Tourism Council, it accounts for more than nine percent of global Gross Domestic Product (GDP) and employs one in every 10 people on earth. By comparison only three other industries rank higher in global export: fuels, chemicals and automotive products. And it’s growing.

    The scuba diving industry is an excellent example of how tourism has grown in recent years. In fact, it has changed fundamentally. Once driven by scuba equipment sales it’s now driven by travel. For example, at 19 billion dollars in revenue annually, dive travel now accounts for more than six times the revenue generated by dive equipment sales.

    But you’re not in the diving or tourism business. So, why should you care? The reason is simple. The dollars quoted in all those statistics are your dollars. Thus, you have a very big voice in how, where and on what that money is spent. In other words, you have enormous power to influence the future direction of the travel industry, generally, and the dive travel industry, directly. More importantly, your dollars don’t just contribute to the financial success of whatever travel provider you choose. If you choose wisely, your dollars can also have a positive impact on the quality of the destination you visit and on those who live there.

    RELATED READ: How Shark Tourism is Protecting Global Shark Populations

    So, what’s the problem? Well, it turns out that tourism can be a double-edged sword. In many ways it has the potential to be a victim of its own success.

    International tourist arrivals (overnight visitors) now exceed a billion per year — millions of which are scuba divers. That’s equivalent to the entire population of China and the numbers are expected to increase to nearly two billion by 2030. So, it’s hardly surprising that at destinations where their bread and butter is a natural resource (like coral reefs), the impact from tourism can range from harmful to devastating. Yet, tourism can be done responsibly and actually become a positive force for conservation, if — and that’s a big “if” — it’s done right. It’s up to you. As one travel expert has puts it, “Tourism is like fire — it can cook your meal, or it can burn your house down. The choice is yours.” Preventing the fire of tourism from getting out of control is the biggest challenge facing the travel industry today because some popular destinations around the world are being literally “loved to death.” This phenomenon even has a name — over tourism.

    When it comes to the environmental consequences of over tourism, marine tourism is perhaps the sector most affected of all nature-based travel activities. As a major share of marine tourism takes place in the tropics — and what draws folks there is the environment — it doesn’t take a genius to realize that much of marine tourism is wholly dependent upon healthy coral reefs and associated ecosystems (seagrass beds and mangrove forests). And surely there’s no segment of tourism more dependent on the continued existence of healthy coral reefs than scuba diving.

    Of course, tourism isn’t the primary reason for the demise of earth’s coral reefs. And though factors such as destructive fishing practices, pollution, coastal development and climate change are far bigger problems, tourism does play a role. However, the reason reefs at popular dive destinations are in trouble isn’t from what you might assume. When talk turns to how coral reefs are degraded at popular tourist sites, divers are often viewed as the culprits. After all, our high visibility and close association with coral reefs makes us easy targets. Without question, anchors as well as clumsy and careless divers do take their toll on our beloved reefs. And the overabundance of divers on any reef, regardless of their behavior, will have a negative impact. But this problem pales in comparison to other destructive factors.

    A colleague of mine once summed up the problem quite accurately. “A diver,” he contends, “probably does more damage to a coral reef by flushing the toilet in his hotel room than he’ll ever do by diving on one.” It was a glib but astute insight into the real problem. From a tourism perspective, the concern is less about direct damage from recreation activities like diving and boating, and more about the indirect threats from the infrastructure needed to support tourism. Every tourist needs a place to eat, sleep and go to the bathroom. They also prefer that these facilities be very near or, ideally, on the water. In addition, every tourist demands the facilities and services that make tourism possible, such as beaches, docks and marinas. These all add to the eutrophication, pollution, demand for seafood and sedimentation problems already threatening reefs from local population pressure (a population pressure that’s sometimes driven by tourism). And considering that on small islands, tourists can sometimes outnumber the local residents, it’s easy to understand the validity of my friend’s “flushing the toilet” assertion.

    While the environmental consequences of tourism are often obvious — at least for those willing to take a closer look — there are other not-so-obvious results that involve people. Clearly, the consequences of a rapidly expanding tourism industry have, at many destinations, been as detrimental to societies as it has to the physical environment. For instance, many developing countries’ job opportunities in tourism have encouraged the migration of people to tourism centers, often disrupting or outright destroying traditional ways of life. Already some communities and cultures have been completely displaced or destroyed by a booming tourism trade. This social upheaval can lead to problems with crime, pollution and a general erosion in the fabric of society. Ironically, this can lead to the decline in the appeal of a destination because it no longer feels “authentic” to travelers, thus killing the golden egg-bearing goose.

    RELATED READ: A Guide to Ocean Conservation Organizations and Efforts

    This phenomenon is, in fact, so common and well-studied that it even has a name — the Tourism Area Life Cycle (TALC). The TALC cycle views tourism as a dynamic process where destinations go through predictable successive stages. It starts when a relatively undeveloped location initially attracts a few adventurous tourists seeking pristine nature and indigenous cultures. Then, as tour operators and related businesses recognize the market potential of the location, the local tourism industry rapidly expands and develops. However, the changed nature of the now “discovered” destination causes the type of tourists who were initially attracted by the undeveloped nature of the location to move on to other destinations that remain undeveloped and pristine — and the cycle is repeated.

    But there’s nothing inevitable about this cycle. By recognizing the cycle of over tourism and unsustainable tourism practice soon enough, destinations can reverse the downward spiral. Corrective actions can be taken, such as limiting tourist numbers, establishing marine protected areas, improving infrastructure codes or restricting certain destructive practices. Ideally, the entire tourism paradigm can change, but this calls for a different kind of tourism: Sustainable tourism.

    Sustainable Tourism: A New Paradigm

    The problem is that undiscovered tourism destinations are not unlimited. As a popular protest poster tells us, “There is No Planet B.” Tourism has become so big that we have almost run out of truly pristine locations. So, without the option of creating more places on earth, the only reasonable alternative is conducting the business of tourism in a different way — and that’s exactly what’s beginning to happen all around the world. Tourism, and tourists, are changing for the better. So, let’s look at how.

    Traditionally, the reason for travel has been to rest and relax. In the marine sector, this emphasis on leisure is referred to as “sun, sea and sand” tourism. This describes the bulk of marine tourists and probably always will. But over the past few decades there have been some significant changes. Increasingly, tourists want more from their holiday than a suntan and souvenirs. These more intrepid travelers — I’ll no longer call them tourists — want a closer and more experiential encounter with the destination they visit than lying on the beach during the day and partying at night. For many, the primary motivation for selecting a destination is not the quality of its beaches, golf courses or of night life, but its healthy natural environment and undisturbed culture. In the words of one tourism expert, “An increasing number of travelers today want holiday experiences that are authentic, immersive and self-directed.” And what’s good news for us is that’s almost the perfect definition of scuba diving.

    The other good news is that, while the travel and tourism industry is sustaining a healthy grow of five to seven percent annually, the adventure and nature-based travel industries are growing in the 20 to 30 percent range. And even more significantly, these travelers most often understand, in fact prefer, to travel responsibly. Of course, this hasn’t gone unnoticed by many within the travel industry and has already led to massive changes in the travel products offered by many destinations and how they’re marketed.

    The evolution of adventure travel can be traced to early attempts to meet the demand of changing attitudes toward tourism, which led to the development of the ecotourism industry. From this evolved the idea that travel should not only serve the tourist but the destination and its inhabitants as well. As ecotourism became more mainstream, newer and more authentic directions were explored and the market segmented into many more specialized sectors and activities. Then, with the growing recognition of the declining state of earth’s environment, many in tourism began to realize that making tourism more accountable to both the local environment and residents could no longer be just a specialized endeavor targeted to “tree-huggers.” All forms of tourism should become part of the solution and not part of the problem. From this movement was born the idea of “responsible tourism,” or what’s become better known as “sustainable tourism” — an off-shoot of the growing concern for sustainable development.

    CLICK HERE TO DOWNLOAD OUR SUSTAINABLE TOURISM CHECKLIST

    But what exactly does sustainable tourism really mean? While arguments rage among the experts in the field, one of the best functional definitions has been offered by those who have been involved in international tourism since its inception, Caribbean islanders. According to the Organization of Eastern Caribbean States, sustainable tourism is defined as “the optimal use of natural and cultural resources for national development on an equitable and self-sustaining basis to provide a unique visitor experience and an improved quality of life through partnership among government, the private sector and communities.” Importantly, this definition recognizes that tourism isn’t just an economic activity. As it has both environment and cultural consequences, so too must it take into account, and be responsible for, its effects. This ethos is exemplified in the commonly used sustainable tourism mantra “people, planet, profit” or what some have termed the “triple bottom line.”

    In general, sustainable tourism has six underlying goals. These include: minimizing environmental impacts; improving local contribution to sustainable development; protecting the quality of the environment by maintaining biological diversity and ecosystem function; minimizing the use of non-renewable resources; ensuring cultural integrity, local ownership and social cohesion of the community; and last, but certainly not least, providing a high quality experience for tourists.

    Today, savvy tourism operators trying to cater to the new, more environmentally and socially conscious traveler have a daunting task. No longer can they be satisfied by having the nicest hotel and restaurant or best beach or even the most exciting tours. Study after study has shown that many travelers today — a majority of European and a fast-growing number from the U.S. — are just as or more concerned with the environmental and social footprint of their travel provider as they are with the actual product. So, travel providers and destinations today aren’t turning to sustainability because it’s a nice thing to do for the earth or future generations. They’re doing so because it makes business sense and realize that not to do so will at some point will mean they’ll no longer be in business.

    So, What Can You Do?

    My experience has been that divers are a special breed. The most serious among us are anything but tourists — we’re travelers. We take very seriously our responsibility to protect the environments we visit and are increasingly recognizing that our travel demands are sometimes placing undue stress on local ecosystems and cultures. So, what we can do to help ensure that operators and destinations hear our wishes loud and clear to make tourism more sustainable is simple. As I indicated at the beginning, we can vote with our wallets. When making your choice of what destination and operator to patronize, take a few minutes to consider not only what you might “get for your dollar,” but how that destination or operator does business and reward those who are doing it right. In that way, you can become part of the solution and help drive a process that will make tourism a positive force for change. Let’s use the fire that we helped ignite to create a warm glow — not burn our house down.

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