Strictly speaking, Cow Spring (located near Peacock Springs State Park in Luraville, Florida) is not a spring at all. It is really an in-line sinkhole which provides diver access to an underground river, that surfaces for the last time at nearby Running Spring.
Cow Spring is an incredibility beautiful system and today it is owned by the NSS-CDS. It is open only to NSS-CDS members and their guests. No open water divers are allowed to access this site.
A couple of weeks ago, a number of volunteers gave up their Saturday and built some great changing rooms. This is a useful improvement to a neat cave diving site. We can’t wait to use it when we are back in Florida.
If you would like to see photos of the whole build, click here.
No, not Paul. Renowned maritime historian, archaeologist and technical diver Dr Innes McCartney will be speaking in Liverpool on Saturday 9th May.
Dr McCartney is known for his discovery and archaeological research into shipwrecks including the wrecks of the Battle of Jutland, 1916 and many British and German submarine wrecks. He has contributed to shipwreck documentaries, such as Time Team Special, Deep Wreck Mysteries and Wreck Detectives series. In addition Innes McCartney used archaeological research to identify 40 new German submarine wrecks in the waters around the UK and Ireland, such as the rubbercoated U480.
He initially became interested in shipwreck archaeology when he learned to dive in 1989. In 1994 Innes McCartney became one of Britain’s first Trimix-certified scuba divers and 1998 became the first person to have dived on the three great liner wrecks, SS Andrea Doria, RMS Lusitania and HMHS Britannic. Innes has always been fascinated by submarines, and in 1999 he discovered the 12-inch-gunned submarine HMS M1 off Start Point in the English Channel.
Over the past two decades Innes has focused on researching and locating lost historic shipwrecks and finding innovative methods to interpret his fieldwork.
On Saturday 9th May, Innes will be discussing key aspects of the first U-boat war and exploring some of the U-boat wrecks as they are seen today.
This free event is being hosted at the Merseyside Maritime Museum.
The results of this useful research were first unveiled to the world in September 2014 at EUROTEK, the European Advanced Diving Conference. Dr Simon Mitchell presented ‘The Five Minute Prebreathe: Sensitive Test For CO2 Scrubber Problems Or A Waste Of Time‘ to a packed hall of international delegates.
Since then there is some mixed messaging about should rebreather divers do a prebreathe? Or is it just a waste of time? If you didn’t attend either EUROTEK or OZTek and hear Simon Mitchell’s talk, what should you be doing?
During the interview Dr Mitchell stated, “this study has been mis-interpreted by some people to suggest that the prebreathe is completely useless. We are not staying that. We absolutely believe that a prebreathe should be still be done for the other reasons. Checking the loop function is correct, adding oxygen and maintaining a set point. These are all critical things.
What we are saying is that you should not do a five minute prebreathe in the expectation that it will reveal any carbon dioxide problems. Or put it another way, if your five minute prebreathe is ok or appears ok from a CO2 point of view you cannot rely on that. That is the point we are making. Of course you should always do a prebreathe.”
To hear this interview in full, click here.
#ThrowBackThursday. Spring 2000 to be exact. Although Helium analysers are considered standard equipment by advanced and technical divers today, they were not always the norm. In fact until the turn of the century the only way to confirm the amount of Helium in your mix was to conduct a gas spectrometer test in a lab.
The game changer – a Helium analyser you could use in the field – was launched by Dive Rite at the January 2000 DEMA Show in Las Vegas.
Above you will find a scan of an article reporting this useful news in Issue 3, Volume 2 of 990 Magazine.
If you would like to read this edition of 990 in full, click here, and download your copy of this much missed and respected diving magazine.
The 2015 winner of the DAN / Rolex Diver of the Year Award – one of the most prestigious honours in scuba diving – has just been announced by Divers Alert Network. For the last quarter of a century DAN has partnered with Rolex to acknowledge excellence in diving and dive safety. This year the prolific work that Associate Professor Simon J Mitchell has done, has been recognised.
This award is given to “an individual who has made significant contributions to dive safety and / or the DAN mission over the past year.” Without a doubt, Simon Mitchell fulfills this criteria.
I first met Dr Mitchell in 2008 when I co-organised the inaugural EUROTEK. During the run up to the event, the late Carl Spencer praised a diving doctor he had heard speak at OZTek. Carl was keen that this hyperbaric expert should also present at our international advanced and technical diving conference. At this time Simon Mitchell’s name was not that well known by northern hemisphere advanced and technical divers.
Simon was only meant to deliver two sessions at EUROTEK.08, a different talk each day, but because another speaker had been unable to attend at the last minute, he willingly stepped into the breach and gave four different talks over two days. I spoke to him on the Sunday night post-conference, and noted he was absolutely exhausted. It was obvious he had given his all, both educating and engaging an audience of European advanced and technical divers. Simon easily fulfills the wording for the DAN / Rolex Diver of the Year Award; “he goes beyond to ensure that all divers prepare smarter through proper dive education…”
The diving forums went wild post EUROTEK.08. The northern hemisphere divers loved and appreciated the fact that Simon Mitchell didn’t dumb down decompression theory. Instead he took time to carefully explain quite complex information to them, in a non-patronising manner, communicating it in such a way that everyone in the audience left having learnt something useful.
“Dr Simon Mitchell is a fantastic speaker with a knack of explaining medical information to non medics, yet also keeping the medics engaged.” Mary Sinclair
“After attending all of Dr Simon Mitchell’s lectures I feel like I’ve had a crash update in the latest decompression theory.” Sebastian Chander
“Simon Mitchell was engaging and funny and has a knack for making complex subjects interesting and easy to understand for the layman.” Howard Payne
Dr Simon Mitchell is a physician with specialist training in anaesthesiology and diving medicine. He is the Head of the Department of Anaesthesiology at the University of Auckland in New Zealand and divides his time between the operating theatre, teaching, research and lecturing around the world. Simon holds a medical degree, Diplomas in Occupational Medicine and Diving Medicine, and a PhD in medicine. He is board certified in anesthesiology and hyperbaric medicine.
The DAN / Rolex Diver of the Year Award is given to “an outstanding individual who has devoted their career to making diving safer for all of us.” Simon Mitchell has authored or co-authored 104 publications including books, text book chapters, scientific journal articles and papers, and workshop proceedings. He sits on three editorial boards (Journal for Extracorporeal Technology, Undersea and Hyperbaric Medicine, and Diving and Hyperbaric Medicine) and is on the Medical Advisory Board for DAN South-east Asia / Pacific and the DAN USA Research Committee.
Since 2008, I have worked with Dr Mitchell on a number of international events. He has spoken at every EUROTEK; 2008, 2010, 2012, 2014 and he is slated again for 2016. He also talks and lectures throughout the world at many medical and diving conferences and events. He says (when asked) that he loves talking to divers because they are an involved hungry curious audience that absorbs information.
In May 2012 Simon Mitchell beautifully accomplished what many of us on the Rebreather Forum 3 organising team thought to be an unenviable and challenging job, and made it look simple. Simon chaired the final two-hour session at Rebreather Forum 3, the purpose of which was to forge an agreement for consensus recommendations of the meeting. (This three-day safety symposium was hosted and driven by the AAUS, DAN and PADI).
Simon successfully got the various communities to ratify consensus on 16 safety points. During the session, Simon actively listened and carefully took into consideration every argument delivered from the floor, amalgamating the relevant issues into acceptable form. As a result many recommendations have already been adopted by the worldwide rebreather community in the hope that they will reduce rebreather accidents and fatalities. Simon Mitchell’s action at RF3 demonstrated beautifully he is “a leader in the dive community.”
The DAN / Rolex Diver Award is given to “a diver who actively promotes and supports DAN’s mission and dedication to incident prevention, management and protection.” Evidence of this was confirmed by a paper entitled ‘The five minute prebreathe in evaluating carbon dioxide absorption in a closed-circuit rebreather: a randomized single-blind study’ published in Diving and Hyperbaric Medicine, for which Dr Mitchell was the senior author. He worked with colleagues from various key institutions including Duke University.
This research had been inspired by the rebreather community. This is a ‘hungry for knowledge’ community, and this thirst is partially driven by technology. Equipment continues develop and evolve allowing deeper and / or longer dives to be conducted that just a few years ago we used to consider improbable. At the turn of the century 100 metre / 300 foot technical dives were considered cutting edge. Today these kinds of depths are the norm for many divers. It is of little surprise therefore that extreme divers and explorers are asking quite challenging physiology questions.
In 2014 Simon Mitchell therefore set out to answer a controversial topic – just how effective is the five minute pre-breathe that all rebreather divers undertake prior to entering the water? A minimum pre-breathe period of five minutes is usually prescribed, on the basis this timeframe allows the diver to recognise elevated carbon dioxide levels in the scrubber, ie shortness of breath. Simon, along with Dr Neal W Pollock, devised a research study to confirm whether the five minute prebreathe is an appropriate sensitive test and does reveal CO2 scrubber problems, or whether it is actually a waste of time.
Simon shared this key research with the recreational and technical diving community, presenting it at EUROTEK.2014 and OZTEK.2015.
Simon’s current research interests include the pathophysiology and treatment of decompression illness and, in particular, the pathophysiology of inner ear decompression illness. He is also interested in the incorporation of CO2 monitoring in closed circuit rebreathers, and the use of checklists to improve safety in the operating room and during diving.
Simon not only talks diving, he an avid technical diver. He began diving in 1972 and he is still an active current diver today, usually diving a closed-circuit rebreather. He has completed over 6000 recreational, scientific, military, and occupational dives and regularly uses rebreather technology to facilitate the exploration of shipwrecks and deep reefs. Simon’s notable underwater achievements include helping to positively identify the SS Cumberland and working with Pete Mesley to identify and then recover the Port Kembla ships bell. He was also part of a team that helped confirm that the wreck of hospital ship AHS Centaur was mis-identified, and is often the diver medic on extreme remote rebreather and technical diving expeditions to Truk and Bikini Atoll.
“We are very pleased to name Dr Simon Mitchell as this year’s DAN / Rolex Diver of The Year,” said Bill Ziefle, President and CEO, Divers Alert Network. “Simon’s academic and diving achievements are impressive and his accomplishments stood out amongst a field of worthy nominees. His life-long dedication to diving has made a significant impact on safety and has advanced our great sport.”
“I am delighted and honored to receive the DAN / Rolex Diver of the Year Award” stated Simon Mitchell. “Like a number of my colleagues who perform similar roles, I enjoy being immersed in the diving community and need little more than this to motivate me. I am deeply appreciative of the recognition this award brings and I are very excited to be attending the Beneath the Sea Show and Awards Banquet. My sincere thanks to DAN, Rolex and the selection committee.”
Dr Simon Mitchell will receive his award at the 2015 Beneath the Sea Dive Show in Secaucus, New Jersey, where he will be presented with an Oyster Perpetual Rolex Dive Watch and a commemorative wall plaque. In addition, Rolex will donate $15,000 to DAN to support essential safety initiatives such as medical research, safety education and first aid training.
‘Basking Shark Scotland‘ has just been accepted into the respected worldwide shark family known as ‘Global Shark Diving’.
Global Shark Diving is an alliance of shark diving operators that have a commitment to world class experiences, operate strict codes of conduct, are dedicated to shark conservation and actively contribute to research.
They join renowned operators such as Beqa Adventure Divers, Mike Ball Dive Expeditions, Nautilus Explorer, Rodney Fox Great White Shark Expeditions, Jim Abernethy’s Scuba Adventures & Marine Life Art Gallery and Undersea Hunter Group.
“We seek to promote sustainable tourism so this fits with our ethos really well. We are really happy to be flying the flag for basking sharks in our wee corner of the world, and proud to be joining this worldwide network of environmentally conscious shark operators”.
Peter Herbst, PADI Course Director and owner of Reef Divers (one of the oldest dive centres in South Africa), has a vacancy for someone who wants to work in the scuba industry.
“In all seriousness…I have an opening for someone that WANTS to work in the scuba industry – long term – that does not have illusions about palm trees and bronzed bodies on a white beach somewhere exotic.
MUST be able to read and write – properly. Newbie or inexperienced Instructors are welcome – I will teach you…lots…but you must be relatively clever and professional.
Smoking…don’t bother…tattoos…send a picture first, I want to greet you in the morning, not read you!
Serious applicants inbox or e-mail me…spelling mistakes or bad grammar on your CV WILL count against you!”