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FIRST IMPRESSIONS, MARCH/APRIL 2010 For a Paramedic's review, jump here
DAN SILVEIRA, VICE-NATIONAL CHAMPION AND WORLD TEAM MEMBER FROM US
I asked vice-national and 3-time
Pacific Coast Champion spearfishing champion Dan Silveira to be the very first diver to
test and evaluate the Freediver Recovery Vest (FRV.) This
summer Dan is headed, with the rest of the United States team, to the world spearfishing
championships in Croatia. Dan splits his time between making fund raising lectures to
raise the $30,000 the team estimates they need and by training for the 120-foot-plus
hunting environment there. Dan says... I was interested in potential design flaws in the FRV. I am a
competitive spearfisherman and my style of diving requires speed, streamlining, ease of
use, 100% effectiveness and safety. I modify every piece of my gear to make sure they meet
all these requirements and that is exactly what I intended to do with the freediving vest.
I planned to mentally deconstruct and breakdown each component to decide if I would modify
it or use it as it is currently designed. First, I evaluated the FRVs fit. If it turned out to be
restrictive or uncomfortable, I simply would not use it.
I need to expand my lungs and diaphragm to take in as much air as possible
before a long, deep dive. The FRV passed this initial test. Its made of stretchable
Neoprene has several options to adjust the fit. I used the smaller of the two sizes
available. Next, I tested the FRV for streamlining. Again, if this
product was too bulky that would be a show stopper for me. I have spent considerable time,
money and effort in developing a completely vertical posture, which allows for maximum
speed with minimal drag. When I start a dive, I count my kick cycles through the first
66ft and follow into the sink phase, where I tuck into the most streamlined
position and continue to monitor my depth by counting my equalizations. 33ft, 66ft, 99ft,
132ft. I will always know my planed dive. There is never a question how deep I am or how
long the dive will take me. I did notice a little bit of drag when I first jumped in the
water with the vest. It felt equivalent to having two or three 16-inch rockfish hanging
off my back on my stringer after spearing them. However, the drag was minimal, and within
a few moments, my body and mind had compensated for the minimal drag, and my dives ended
up being about the same as when I was not using the vest. I made test dives to 50 ft, with
direct vertical descent and direct vertical assent. My dive profiles were exactly 33 to 34
seconds whether I was wearing the vest or not. That is a perfect 1-meter per second. Where
I did notice a bit of drag was when I was in my sink phase. For me, this will normally
occur past 66ft. In this phase, drag is more prominent because my body is tucked into a
vertical posture and the only added drag would be the vest, but once I leveled out in
hunting position, parallel to the bottom, with my head up, I found that the Vest tucks
into the gap between my shoulder blades and into the slipstream behind my head; therefore,
making it feel like I have no resistance. Lastly, I tested the FRV for ease of use and durability. I do
not like products that are too complicated or that break regularly. After about 5 minutes
of training and a demo, I felt I was ready to use the product. After about six dives, I
was surprised to find myself floating on my back. I realized that I had forgotten to
tellwith a quick swipe across the chest magnetthe computer that I
was still conscious, which is required at 25 seconds after every dive to help guard
against surface blackout. I had become task oriented while hunting for White Seabass and I
simply forgot to swipe my arm past the magnet on my chestthe vest had literally
disappeared into the background. I soon learned that this method of waiting 25 seconds
before telling the computer that I was OK was not going to work for me. I was discouraged
that I might not be able to use this great product until I figured out that I could simply
hold my right shoulder with my left hand for 25- to 30-seconds and the computer would
clear me for more diving. I found that within a few minutes and using a little ingenuity,
this vest will work for me. Ultimately, a safety diver is the best option for a
freediver, but all hunters know the difficulty of finding a dedicated safety spotter. I
have been in many scenarios where I was left diving alone due to the murky and kelp
matted waters of California. I always do my best to dive with a partner, but it can become
a difficult task of diving together all day and every dive. All it takes is a few more
kicks, a few more tugs of the fish and a few more seconds, when all of a sudden, shallow
water black out can take a divers life. The freediving vest, developed by Terry Maas and
others, offers added safety and redundancy that I appreciated during my dives. My conclusion is that the Freedivers Recovery Vest should not
replace safe diving habits nor does it eliminate all the inherent risks of diving, but
does offer a new dimension in terms of safety. This innovative product is constructed from
quality materials to insure longevity and perfect operation. It is fairly streamlined for
what it offers and it is comfortable. I do believe that the product will help save lives
if people use it correctly. It is simple to operate and offers several protection
scenariosdiver stays too long, goes too deep or fails to respond on the surface in a
surface blackout. Obviously, the vest may not save lives if you are in an overhead
environment like a cave, or if there is danger from boat traffic. If you ask yourself if
you want to risk your life or have a chance at surviving I say, when in doubt, use the
vest. ______________________________________________________________________________________________
CHIP BISSELL** CO-INVENTOR
Entering my dive time and
depth limits was very easy. Even while wearing
thick 5mm gloves. The buttons are the right
size and have the right amount of tactile feedback so you know what you're doing. The FRV wrist unit has an
amazing display. On my Suunto D3, the numbers
are pretty small. Not so with the FRV. All the information is crystal clear and easily
read at a glance. You don't have to bring it
up in front of your face to read it. I didn't
need to use the adjustable backlighting, but it's great to have the option. In the water, I wasn't even
aware of the vest. It is amazing how the whole
thing contours to your body. The back-mounted
inflation unit fits perfectly in the space above the weightbelt and between the shoulders. I didn't even know it was there. Both underwater and on the surface, the FRV is
almost transparent. I didn't even think about
it. I was just making dives and looking to the
wrist unit as I usually do with my Suunto freediving watch. Freedivers always talk
about the importance of knowing your limits. The
FRV drives this point home. I set my limits
for dive time and depth to be pretty conservative, i.e. cautious. As I made more dives, I started to dive longer and
deeper. When I strayed deeper than my set
depth limit, the FRV let me know. It inflated
rapidly and quickly brought me to the surface. I
realize how easy it is to go beyond what we thought were our safe limits. When I'm spearfishing, I
can't be watching my depth and time like a hawk. Much
of freediving is done by feeling. It's great
to know that the FRV will watch my personal limits for me and hold me to them. Especially if I'm distracted or I get too focused on something else. **Chip is a co-inventor of the FRV and is the firm's patent attorney. He has no economic interest in Oceanic Safety Systems LLC.. ______________________________________________________________________________________________
IAON POHLIT, PRESIDENT SANTA BARBARA FREEDIVERS, PRESIDENT THE WATERMENS ALLIANCE
To start off let me say thanks
for letting me play with your vest, I felt like super man for a day.
My first impression of the vest was great, it looks well made and streamlined.
The display on the wrist control is large and easy to read. I like the fact
there is only three buttons and that they are large enough to operate with gloves, which
is a concern with all dive computers. Also the vest was easy to put on, and once in
the water it was virtually non-existent, completely neutral as far as I could tell.
I tried several different scenarios of deployment and all operated flawlessly.
The display is backlit so even in the deepest, blackest water of the Channel Islands
Harbor I could see the screen. I literally could not see my hand in front of my face
but could still read the display and operate the wrist controls with ease. There are
several modes that can be set; max depth, max time, and several others. These
functions are easy to use and appear to be extremely accurate and reliable. By my
2nd or 3rd dive I felt comfortable navigating the controls and was eager to experiment.
I set a max depth and when I exceeded the depth it deployed. On the next dive
I set a maximum time and when the time was running out a countdown began and when
exceeded, the vest deployed. The most impressive thing about the vest to me was that no matter how I was positioned in the water the vest would role me over onto my back so that if I was blacked out I would be face up on the surface. I tried fighting it and lost, I ended up flat on my back staring up at the sky. There is a wire that runs from the vest to your watch/computer that I was initially concerned would bother me but it did not, in fact it was not even noticeable. From my first trial of the vest I would say it appears to be very user friendly and does not seem to to interfere with any motions associated with freediving. Once used to the functions and operating procedures it will be as natural as clearing your snorkel. It is a bit on the expensive side-$3000, however if you consider the fact that I personally have twice that amount rapped up in spearguns and other diving equipment it doesn't seem that bad, especially considering the alternative. This is a great invention that will change the parameters of our sport forever. I can't wait to see the final product!. Sincerely, Iaon Pohlit _____________________________________________________________________________________________________________________________
LEFT: --David Laird, Spearfisherman, Free Diving
Instructor,Trip Leader, Videographer, Contributing writer to Hawaii Skindiver,
Spearfishing Magazine, and International Free Diving News, Co-producer of BLUE:
SPEARFISHING THE CALIFORNIAS, and BENEATH THE COBALT SEA RIGHT: Joe Tobin is
a licensed David writes: The newly
developed Oceanic Safety Systems Free Diving vest is truly impressive. I had
reservations about the bulk factor until I actually got in the water and began diving it;
when combined with a plastic molded lumbar support beneath an elastic rubber weight belt,
the whole thing seemed to disappear, and at times I became unaware of the device. I
was surprised to find that this combination was as comfortable as the trusty European
weight harness I have been partial to for over a decade. The computer is well-lit
and easy to read; the vest does exactly what is intended; once triggered as I exceeded the
max depth parameter set, it carried me back to the surface and positioned me face up in
short order. During mock
rescue scenarios, the unconscious diver, wearing the just-activated vest,
floated high on the surface perfectly positioned for administering rescue breaths.
The vest positioned him floating as if he was on a floating gurney, almost parallel to the
surface. With this useful and well-designed innovation--one more of his many cutting
edge contributions to the global free diving community-- Terry Maas may be the Thomas
Edison of our time. .....Recently I had the
opportunity to participate in an evaluation of the vest under typical freediving
conditions. As a freediver and avid
spearfisherman, I had an interest in seeing for myself if the vest would interfere in any
way in my ability to dive as I normally do while hunting. As
others have reported, the vest fit comfortably and exceeded my expectations but I had more
important objectives to pursue. My
second and most important objective was to evaluate how the vest would affect a simulated
rescue of a freediver in need of rescue breathing. Using avid freediver David Laird
as my test subject, I observed several scenarios where the Freedivers Recovery Vest
self inflated after David intentionally exceeded his self programmed depth and time
limits. In all cases, the vest inflated
quickly and brought David to the surface where he remained floating in a face up position. My next effort was to assess simulated rescue
breathing. In this trial, I was impressed at
how much buoyancy the vest provided. After
removing Davids weight belt and mask as well as my own, I found that rescue
breathing could be performed in the water very easily.
One very important concept in rescue breathing is to maintain proper head tilt to ensure the tongue does not obstruct the airway in the unconscious victim. This task is easy enough to perform on land but how about in the water? I found that the inflated vest not only helped maintain proper head tilt but that I could also deliver simulated rescue breaths very easily on account of the buoyancy provided. During the in-water rescue breathing drills, my test subjects head was always well clear of the water surface which would be an important advantage when trying to provide rescue breathing in the water. Another important discovery was
that by reaching between my test subjects arm and chest then gripping the shoulder harness
portion of the vest, I could easily swim towards safety while simultaneously delivering
rescue breaths.
It is clear to me that the
Freedivers Recovery Vest resolves several important problems surrounding SWB
blackout in freedivers. By returning the diver
promptly to the surface and providing good buoyancy and positioning of the victims
airway, a vigilant dive buddy can more quickly begin rescue breathing in the critical
first minutes following an SWB. I am convinced
that combining use of the Freedivers Recovery Vest along with continued safe
freediving practices including using the buddy system and knowledge of basic rescue
breathing techniques, lives will be saved. _________________________________________________________________________
Wayde Hayashi, National Champion and IUSA Athlete of the
year The Freediver's Recovery Vest is a very effective safety device which will bring an unconscious diver to the surface and float the person face up. As a spearfisher in Hawaii, our winter suits are 3mm and our summer suits can be as thin as 1.5mm. We enjoy the freedom and ease of movement these suits provide. One of my biggest concerns with the Freediver's Recovery Vest was whether it would be cumbersome and restrictive. As I was fitted with the vest, I could definitely feel the deployment device on the upper center of my back. The neoprene vest is very comfortable and does not hinder your upper body movement. Another concern I had was if the additional weight of the unit was going to require adjustment of the amount of weights I use. I was happy to find that the vest is actually neutral in the water so no adjustment is needed. My testing of the FRV included actual spearfishing with the vest on. I noticed that while I was hunting I completely forgot I had the vest on. Stringing fish on my waist was not a problem as the vest ends above your belt line.
The vest did not produce any noticeable drag while surface swimming or ascending. At no time did the FRV hinder me while spearfishing. As we tested the actual operation of the vest on a simulated unconscious diver, we set the wrist mounted dive computer for a 30 sec. dive. At 30 seconds the vest inflated and quickly brought me to the surface where I was held in a very stable face-up position.
I even forced myself to roll over face down and the vest immediately reversed my
position back to face up. While Sterling was filming, we did this test over and over
again and 100% of the time the vest and the computer performed exactly the same way.
I am a firm believer that the Freediver's Recovery Vest can and will save lives.
Deep Freediver, Deron Verbeck resides in Kona Hawaii. He has attended many national and international freediving contests. He holds many national records for freediving (Click here for his accomplishments.) Here are his words: My first impression of the FRV was one of skepticism. Being an ex-competitive deep freediver I thought that the vest would be very constricting around my chest not allowing me to get a large breath of air or even pack for that matter. Also I thought it would be bulky creating a lot of drag on descent and ascent and add to my buoyancy. But after trying on the vest and fitting it properly around my waist and chest I found that it was very comfortable to have on. I took large breaths sitting on the boat to see if it would be constricting and it seemed to be great, no pressure around my rib cage so I could inhale completely. I even tried packing, which expands my chest even more and I felt no discomfort. Now to put it to the test in the water. Floating on the surface I found that the vest stayed very well fitted not riding up or moving from side to side (like some ill fitting BCDs do) and seemed to melt into my own wetsuit and become unnoticeable. My first dive I was really focusing on the vest and how it felt on my body. The only thing I could feel was the inflation unit in the middle of my back as I descend. After a couple of dives getting used to it, that seem to disappear along with the rest of the unit. Now I focused on the stream lining. I wanted to see if the unit would pull in one direction or another on the descent. Being an avid spearfisherman I know when I want to get straight down to a spot on the bottom to hide or start to stalk a fish I dont want to be pulled one way or another by a piece of equipment hanging off me. So I picked a spot on the bottom and headed towards it and with very little correction I hit within inches of where I wanted to go. Now the ascent was very much the same with little effort to kick with the vest on because of the neutral buoyancy there was no need to add more weight to my belt and everything felt much the same as if I wasnt wearing the vest. Putting the vest to the safety test now, I wanted to see how it felt when the vest deployed and how well it would lift me to the surface. After a shallow dive I did not swipe the computer over the deactivation magnet and let the unit deploy on the surface. It held me in a very comfortable position on my back with my head well out of the water, a very nice feature. Even an exhausted diver will benefit from this as it keeps the head high out of the water not taking much splashing from waves. I then set the vest depth trigger to 80 feet and did a dive to see how it deployed at depth. I wanted to have a lot of momentum as I hit the 80 foot level to see how far I would travel past before the vest had enough lift to turn me towards the surface. On my descent I kicked very hard to get moving fast then went into a glide with quite a bit of speed. While watching the units easy to read depth gauge I reached 80 feet and the unit deployed as planned and within a couple of feet I started to turn towards the surface with the lift of the vest. I stayed very relaxed and let my body go limp to simulate being unconscious to see the reaction of the vest as it traveled back to the surface. The ride back was very quick and almost straight up, then to my surprise at about 25 to 20 feet the vest started to arch me backwards turning my face towards the surface. The first part of my body to hit the surface was my face and it never went back under from the recoil of surfacing.
All in all I really like how easy to use and comfort of wearing the vest and also
was surprisingly happy with the safety performance of the unit. The FRV will be a great
asset to any level freedivers equipment list.
From Joe Strona That FRV worked
really great. I remember several years ago at the very beginning using that bright-green
vest prototype for pictures. Compared to now, how the unit has evolved! I'm proud &
honored to have been included with it's development. From Daryl Wong This is a very exciting stage in our time capsule of diving history. To bring this vest to fruition has been a labor of love for you, Sheri Daye, Chip Bissell and all those who have worked on this, and I am proud to have been able to see it develop to where is will soon be available to save lives. Always at the forefront of diving, you have developed a tool we can use to ensure that we can dive smart and safe. Thank you from all of us who have known friends, family and acquaintances who might still be with us if this had been around. And thank you for those of us who will be around to dive another day because of this vest. _________________________________________________________________________
Glennon Gingo Among his many accomplishments, Glennon acts as a consultant for aquatics training programs and activities including SCUBA diving leadership, C.P.R., lifeguard, first aid, diving safety and diving research. He developed Freediving safety protocols for the U.S. Freediving Team and managed and coached the U.S. Freediving Team from 1998 2002 including during world competitions in Italy, France, Spain, Egypt and Hawaii (USA). (For Glennon's complete bio, Click Here) Glennon has made an extensive review of the FRV (Click here), excerpts from his evaluation follow: During the evaluation, I tried several positions underwater and during each successive dive, changed positions / attitude to see if the vest would shift or make the dive any more difficult than diving without the vest. The vest remained streamlined throughout the dives and did not encumber my movements.... In each instance of inflation and once breaking the surface of the water I immediately noticed that my head was completely supported by a portion of the vest around the head which is much like a flotation collar. This particular attribute was most comforting in that conscious or unconscious, as simulated, the vest kept my head in a relaxed position and the airway (both mouth and nasal passages) above water.The head position on the surface and the support afforded by the vest buoyancy around the head allows for effective airway management including a rescuers evaluation of the diver- victims state and whether the diver-victim is breathing or not breathing. Standards for cardiac care dictate that chest compressions are key to providing first aid assistance to the diver- victim as soon as it is possible to effect this procedure, i.e. hard supportive surface in which to start effective chest compressions on an unconscious victim. In-water rescues with delay to advanced support require the rescuer to initiate rescue breathing with the diver- victim. The vest allows for effective evaluation of the airway and also allows the airway to be maintained through correct positioning of the head. The concern of having water advancing into the airway is also considered in that the rescuer can easily move the diver- victims head from side to side. This ability to move the diver-victims head will help to ensure that the diver- victims upper body and ultimately his airway will not be pushed underwater while initiating rescue breaths. Summary: I was very comfortable using the vest and felt very confident in the operation with minimal instruction and practice. The controls are easy to read and the systems simple to assemble and wear. As a Freediver and professional instructor in aquatics safety and diving, in my evaluation, the vest will complement all freediving safety training and programs and allow for an added measure of safety for the Freediver. In no way do I believe that using this vest is a substitute for sound freediving training and aquatic competence. The adherence to freediving safety protocols and use of good judgment cannot be overemphasized.***************************************************************************************
Since its inception and with keen interest, I've been closely
following the development of the Freedivers Recovery Vest (FRV.) Im glad that a
pioneer in the sport of our sport freediving and blue water hunting, Terry Maas would
choose to develop this important piece of technical equipment. I feel, based on this fact
alone, most freedivers and underwater hunters will be more willing try it without knowing
much else about how the FRV works. I was a bit concerned about the efficacy of such a
revolutionary product for day-to-day divingas anyone would be with a high tech
product that carries a $3,000 price tag. I knew the basic functions pretty well. However,
its one thing to understand a product and appreciate it technically, but quite
another to use it real time in every day conditions where I dive. After a brief in-water
trial I was impressed enough with the FRV to ask Terry if I could use it for the annual
three-day spearfishing tournament that takes place in the spring at
It obviously didn't hinder my diving ability because by the end of the
tournament I had the highest overall score. The FRV alleviated all of my concerns of
being cumbersome and the notion that its not well suited for the hard core. It is a
nice feeling, particularly when diving more aggressively, to know that should your buddy
have his guard down, and should the unthinkable happen, you might come out of it just
fine. This feeling is hard to put a price on and I've been spearfishing freediving for
over 20 years. Mark Laboccetta
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Copyright 2010 Oceanic Safety Systems LLC Patent ZA2008/03209 and patents pending |