The RMS Republic: The Billion dollar Shipwreck of GOLD The Backstory: The RMS Republic was a White Star Line steam-powered ocean liner built in 1903. In early morning of 23 January 1909, while sailing from New York City to Gibraltar, the Republic was in a collision with SS Florida in 1909 in which she sank in 270 feet of water aprox 70 miles off of Martha's Vineyard. At the time there where multiple reports that she was carrying gold and mixed coin worth $250,000 (in 1909 dollars) to be used as payroll for the US Navy's Great White Fleet. In addition to the US Navy coin-monies shipment, various sources reported on a much larger cargo, $3,000,000 in US gold Double Eagles. Among these, The Washington Post reported, "Three million dollars in gold coins lies in the rotting hulk of the White Star liner Republic, lost off Nantucket in January, 1909. Today, those coins would be worth a Billion Dollars. Captain Martin Bayerle discovered the wreck of the RMS Republic in 1981 and in 1987 he launched a salvage effort. I was the video engineer on the documentary crew of that expedition. The expedition was successful in targeting and excavating their target area, but failed to locate the gold, however. " A perfect landing at the wrong airport…" With new information all these years later, Captain Martin Bayerle finally thinks he knows where the gold is. With its current value, that cargo would be worth over a Billion Dollars. This is a story of shipwreck diving, history, international politics and a life long quest for treasure. In the summer of 2022, Captain Martin Bayerle returns to the site of the RMS Republic and we will be there with him.

The RMS Republic: Shipwreck of GOLD

TV-6: The Making of WATERDANCE

Technical Free-diving and shooting underwater scene for AVITAR 2. Interview with Kirk Krack of Performance Free-diving. Kirk discusses the procedure, techniques, physics and physiology of technical free diving. Kirk also discusses how he used technical free to train actors for the underwater sequences in the new AVITAR Feature Film Download past Free-diving episodes with Kirk Krack here: 1.We go "in-depth" and discuss the philology, history and mindset to succeed in the sport of Free-diving  2.Intro to Free-diving with Kirk Krack

Technical Free Diving: A Discussion

Sep 11th 20th Anniversary Episode. Joe and Arielle talk about their recollections from the events of that day. We would like all listeners to share their stories as well. Leave comments, send us an email or an audio file.

9-11 Memorial Episode

Human Factors in Diving: Part 3 "Reducing Error Producing Conditions." We wrap up our Human Factors discussion with Gareth Lock. We discuss error producing conditions, network influence mapping and how to improve learning from incidents. We also preview the upcoming Human Factors in Diving Conference. In Sept 2021 there will be the online Human Factors in Diving Conference. For more info and how to attend goto:

Human Factors in Diving: "Reducing Error Producing Conditions."

Psycho-Motor Skills Discussion. Interview with Karl Shreeves. Karl is the Director of Training Development at PADI. We discuss psycho-motor skills and how that relates to teaching and performing scuba diving. Psychomotor skills refers to a wide range of actions involving physical movement related to conscious cognitive processing.   https://en.wikipedia.org/wiki/Psychomotor_learning

Psycho-Motor Skills Discussion. Interview with Karl Shreeves. Karl is the Director of Training Development at PADI. We discuss psycho-motor skills and how that relates to teaching and performing scuba diving. Psychomotor skills refers to a wide range of actions involving physical movement related to conscious cognitive processing.   <a href="https://en.wikipedia.org/wiki/Psychomotor_learning" rel="nofollow" target="_blank">https://en.wikipedia.org/wiki/Psychomotor_learning</a>

Psycho-Motor Skills in Scuba Diving: A Discussion.

Human Factors in Diving Psychological Safety and Just Culture: Gareth Lock, author of the book "The Human Diver" talks about the two key concepts in dive safety analysis. Psychological safety and just culture. - Psychological Safety is the belief that you won’t be punished or humiliated for speaking up with ideas, questions, concerns, or mistakes. It’s a shared belief held by members of a team that others on the team will not embarrass, reject, or punish you for speaking up. - Just Culture is a concept related to systems thinking which emphasizes that mistakes are generally a product of faulty organizational cultures, rather than solely brought about by the person or persons directly involved. In a just culture, after an incident, the question asked is, "What went wrong?" rather than "Who caused the problem?". In Sept 2021 there will be the online  For more info and how to attend goto:

Human Factors in Diving: Psychological Safety and Just Culture (part 2)

Gareth Lock

Human Factors in Diving Part 1: An Introduction Gareth Lock is a retired RAF officer and dive educator who is the Director of "The Human Diver". This is an organization that's mission is to improve the safety and performance of divers thru the study of Human Factors. Human Factors are the physical or cognitive properties of individuals, or social behavior which is specific to humans, and influence functioning of technological systems as well as human-environment equilibria. The safety of diving operations can be improved by reducing the frequency of human error and the consequences when it does occur. Gareth wrote the seminal book on the this topic:  Gareth's website is:  Human Factors in Diving Conference is:

Human Factors in Diving. Interview with Gareth Lock (part 1)

The Philosophy of Technical Dive Instruction: a discussion We talk with Marissa Eckert and James Draker of Hidden World Diving about: standards, tech diving history, training agencies, cave diving, tech student problems, advanced buoyancy control, gas management, situational awareness and how different instructors teach. For more info about cave and tech training, goto their website. https://www.dive-caves.com/

The Philosophy of Technical Dive Instruction: a discussion We talk with Marissa Eckert and James Draker of Hidden World Diving about: standards, tech diving history, training agencies, cave diving, tech student problems, advanced buoyancy control, gas management, situational awareness and how different instructors teach. For more info about cave and tech training, goto their website. <a href="https://www.dive-caves.com/" rel="nofollow" target="_blank">https://www.dive-caves.com/</a>

The Philosophy of Technical Dive Instruction:

Interview with Shawn Clark about how he overcame the challenges of Cave Diving when he only has one leg.

Cave Diving as an Amputee

The podcast for serious scuba divers. We cover, TRIMIX, NITROX, REBREATHER Cave Diving, Shipwreck diving, DPV, Hogarthian, Military scuba, free-diving, hyperbaric science.

I am new to the podcast and am loving the Project Azores series. Keep up the good work.

Project Azores is Great

Glad to see these cranking out again. I appreciate your work. Hope to see you again at Ginnie soon.

Back in the saddle again!

POD DIVER RADIO: The Scuba-cast

PD87 Divers Alert Network:  2008 Technical Diving Conference. The two-day conference, planned for Jan. 18-19, 2008, in Durham, N.C., will feature four half-day workshops. Discussions will include the operational and medical aspects of technical diving. The forum will also address ways to improve effectiveness and safety.Workshops OverviewPHYSIOLOGY WORKSHOP PLANRespirationNormal respiration and gas exchange at sea level with emphasis on oxygen uptake, CO2 elimination, and ventilatory control. Dependency of CO2 elimination on ventilation. CO2 retention and individual susceptibility. Effects of tidal volume and dead space on alveolar ventilation. Hypo- and hyperventilation. Ventilatory capacity, physical fitness, and respiratory muscle fatigue. Effects of immersion and gas density. Airway collapse and effort independent expiratory flow. Equipment dead space, static lung load, breathing resistance, and work of breathing. Effect of HPNS on respiration. Case reports.CNS Oxygen ToxicityRelevant mechanisms of CNS toxicity: free radicals, ventilation, CO2 retention, cerebral blood flow. Risk factors and individual susceptibility. Donald’s WWII studies. Estimating CNS toxicity risk in relation to O2 exposure, review of O2 exposure guidelines, and the O2 clock. O2-CO2 interactions and “Shallow Water Black-Out.? Mixed-gas O2 exposure limits. Recovery from CNS toxicity risk during underwater air breaks. Case reports.Narcosis and HPNSSigns and symptoms of nitrogen narcosis; individual susceptibility, accommodation and adaptation to narcosis; effects on narcosis of rate of compression, oxygen and carbon dioxide; onset depths of narcosis; narcotic potencies of N2, He, Ne, Ar, Xe, O2and CO2; oxygen narcosis; recommended depth limits for air diving; mechanism of narcosis; pressure reversal; utility of EAD/END (equivalent air depth/equivalent nitrogen depth). Signs and symptoms of HPNS; individual susceptibility; depth of occurrence; effect on HPNS of compression rate and time at depth; effect of trimix; effect of hydreliox; mechanisms of HPNS; options for reducing HPNS effects given obligatory fast descent rates.Thermal Mechanisms of heat transfer (radiation, conduction, evaporation, and convection) with application to divers. Physiological temperature control and consequences of heat transfer (work; shivering; regional vasoconstriction; stages of hyperthermia and hypothermia; freezing and non-freezing injury). Respiratory heat transfer (inert gas and density effects). Rewarming and thermal afterdrop (“warm and dead?). Drysuit insulation properties of Ar, He, CO2, air and O2 (is this safe?). Insulation properties of wet undergarments. Tools for thermal modeling. Hotwater suits for shallow in-water decompression stops vs. insulation for dry decompression. (Thermal effects on decompression will be covered in the Decompression Workshop.) Current and new active and passive technologies (power sources, hydrogen thermal batteries, hydrogen catalytic heating, regional rewarming, aerogel garments).DECOMPRESSION WORKSHOP PLANDCI PathophysiologyDCI signs, symptoms and pathophysiology. Paradoxical thromboembolism and cryptogenic stroke. AGE: pulmonary barotrauma, ASD, PFO, and transpulmonary passage, Type III DCS. PFO detection and diver evaluation. Transpulmonary passage and bubble size. Evidence associating DCS with PFO. Skin bends and PFO. Exercise and pulmonary shunt. PFO correction. Case reports.DCS Risk FactorsVGE as a measure of decompression stress. Environment: temperature, immersion, exercise. Influence of dive phase (pre-, bottom, deco, post-). Individual: obesity, gender, age, aerobic fitness, individual susceptibility. Adaptation, hydration, alcohol, previous DCS, injury.Deep StopsHistory and theory of deep stops. Empirical methods and rules. Supporting evidence and experimental data. Validation of methodology.In-Water RecompressionReview of IWR experience. Appropriate signs and symptoms for IWR. Equipment and procedures to minimize IWR risk in event of decompression emergency with no access to recompression chamber. Training requirements. Environmental conditions. Depth measurement and control. Diver monitoring and tending. Surface support. Emergency procedures. Outcome reporting.DCS Risk AssessmentDCS probability and severity in air and nitrox diving. DCS severity and acceptable DCS risk. Technical diving database, risk analysis and dive condition effects. Examples of tech dive profiles and outcome data. Diver Health Status Form (DHSF). Uploading dive profile and DHSF data to DAN Website. Are technical divers self-selected?REBREATHER WORKSHOP PLANUS Navy and UK/EU Perspectives on Rebreather Test Methods and StandardsRebreather divers must overcome the work of breathing due to breathing resistance, static lung load, and elastance. Inspired CO2 amplifies these effects by increasing ventilation. CO2 sensors and scrubber gauges would decrease this risk. CO2 canister duration is tested as a function of temperature, workload, and depth. O2 control accuracy is assessed.Testing should be performed on breathing machines and by divers. What US and EU labs are qualified to test rebreathers? What is the role of failure mode effect and criticality analysis (FMECA) in rebreather design? New U.S. Navy performance standards are based on diver tolerance. U.S. Navy and EU rebreather test standards should not differ, but do.

PD87 Divers Alert Network:  2008 Technical Diving Conference. The two-day conference, planned for Jan. 18-19, 2008, in Durham, N.C., will feature four half-day workshops. Discussions will include the operational and medical aspects of technical diving. The forum will also address ways to improve effectiveness and safety.Workshops OverviewPHYSIOLOGY WORKSHOP PLANRespirationNormal respiration and gas exchange at sea level with emphasis on oxygen uptake, CO2 elimination, and ventilatory control. Dependency of CO2 elimination on ventilation. CO2 retention and individual susceptibility. Effects of tidal volume and dead space on alveolar ventilation. Hypo- and hyperventilation. Ventilatory capacity, physical fitness, and respiratory muscle fatigue. Effects of immersion and gas density. Airway collapse and effort independent expiratory flow. Equipment dead space, static lung load, breathing resistance, and work of breathing. Effect of HPNS on respiration. Case reports.CNS Oxygen ToxicityRelevant mechanisms of CNS toxicity: free radicals, ventilation, CO2 retention, cerebral blood flow. Risk factors and individual susceptibility. Donald’s WWII studies. Estimating CNS toxicity risk in relation to O2 exposure, review of O2 exposure guidelines, and the O2 clock. O2-CO2 interactions and “Shallow Water Black-Out.? Mixed-gas O2 exposure limits. Recovery from CNS toxicity risk during underwater air breaks. Case reports.Narcosis and HPNSSigns and symptoms of nitrogen narcosis; individual susceptibility, accommodation and adaptation to narcosis; effects on narcosis of rate of compression, oxygen and carbon dioxide; onset depths of narcosis; narcotic potencies of N2, He, Ne, Ar, Xe, O2and CO2; oxygen narcosis; recommended depth limits for air diving; mechanism of narcosis; pressure reversal; utility of EAD/END (equivalent air depth/equivalent nitrogen depth). Signs and symptoms of HPNS; individual susceptibility; depth of occurrence; effect on HPNS of compression rate and time at depth; effect of trimix; effect of hydreliox; mechanisms of HPNS; options for reducing HPNS effects given obligatory fast descent rates.Thermal Mechanisms of heat transfer (radiation, conduction, evaporation, and convection) with application to divers. Physiological temperature control and consequences of heat transfer (work; shivering; regional vasoconstriction; stages of hyperthermia and hypothermia; freezing and non-freezing injury). Respiratory heat transfer (inert gas and density effects). Rewarming and thermal afterdrop (“warm and dead?). Drysuit insulation properties of Ar, He, CO2, air and O2 (is this safe?). Insulation properties of wet undergarments. Tools for thermal modeling. Hotwater suits for shallow in-water decompression stops vs. insulation for dry decompression. (Thermal effects on decompression will be covered in the Decompression Workshop.) Current and new active and passive technologies (power sources, hydrogen thermal batteries, hydrogen catalytic heating, regional rewarming, aerogel garments). DECOMPRESSION WORKSHOP PLAN DCI Pathophysiology DCI signs, symptoms and pathophysiology. Paradoxical thromboembolism and cryptogenic stroke. AGE: pulmonary barotrauma, ASD, PFO, and transpulmonary passage, Type III DCS. PFO detection and diver evaluation. Transpulmonary passage and bubble size. Evidence associating DCS with PFO. Skin bends and PFO. Exercise and pulmonary shunt. PFO correction. Case reports. DCS Risk Factors VGE as a measure of decompression stress. Environment: temperature, immersion, exercise. Influence of dive phase (pre-, bottom, deco, post-). Individual: obesity, gender, age, aerobic fitness, individual susceptibility. Adaptation, hydration, alcohol, previous DCS, injury. Deep Stops History and theory of deep stops. Empirical methods and rules. Supporting evidence and experimental data. Validation of methodology. In-Water Recompression Review of IWR experience. Appropriate signs and symptoms for IWR. Equipment and procedures to minimize IWR risk in event of decompression emergency with no access to recompression chamber. Training requirements. Environmental conditions. Depth measurement and control. Diver monitoring and tending. Surface support. Emergency procedures. Outcome reporting. DCS Risk Assessment DCS probability and severity in air and nitrox diving. DCS severity and acceptable DCS risk. Technical diving database, risk analysis and dive condition effects. Examples of tech dive profiles and outcome data. Diver Health Status Form (DHSF). Uploading dive profile and DHSF data to DAN Website. Are technical divers self-selected? REBREATHER WORKSHOP PLAN US Navy and UK/EU Perspectives on Rebreather Test Methods and Standards Rebreather divers must overcome the work of breathing due to breathing resistance, static lung load, and elastance. Inspired CO2 amplifies these effects by increasing ventilation. CO2 sensors and scrubber gauges would decrease this risk. CO2 canister duration is tested as a function of temperature, workload, and depth. O2 control accuracy is assessed. Testing should be performed on breathing machines and by divers. What US and EU labs are qualified to test rebreathers? What is the role of failure mode effect and criticality analysis (FMECA) in rebreather design? New U.S. Navy performance standards are based on diver tolerance. U.S. Navy and EU rebreather test standards should not differ, but do.

DAN Technical Diving Conference. P-87

-Cambrian Foundation Gala: Sign up amy@cambrianfoundation.org-PADI eLearning-ARSBC

PD60: PADI eLearning & British Columbia Shipwrecks

PADI Specialty of the Month: Enriched Air Nitrox.

Enriched Air Nitrox

Five hundred years of shipwreck history. We interview Dr Jose Neto and Dr Pedro Parreira. Marine Archeologists at the Azores Regional Directory of Culture. We discuss the rich nautical history of the Azores and shipwreck diving in the Azores.

Shipwreck Research in the Azores

PD135: Dr Richard Vann of DAN (Diver Alert Network) discusses O2 toxicity and oxygen's effect on the diver at depth.

Oxygen Toxcity

with Dr Richard Vann PhD of DAN (Divers Alert Network) and former O-6 US Navy Diving Officer. Dr Vann discusses the issues and factors surrounding DCS. This interview was conducted at DEMA 2007.

DECO SAFETY Discussion w/ Dr Vann

Richie Kohler

Mystery of the Last Olympian: Titanic’s Tragic Sister Britannic. (new book)Interview with Richie Kohler at DEMA 2015 about his expeditions to the HMS Britannic and his new book about the same. &lt; PD-172: AUDIO PODCAST&gt;For more info about the book goto:

Mystery of the Last Olympian: Titanic’s Tragic Sister Britannic. (new book) Interview with Richie Kohler at DEMA 2015 about his expeditions to the HMS Britannic and his new book about the same. &lt; PD-172: AUDIO PODCAST&gt; For more info about the book goto:

Britannic Expedition. Intvw w/ Richie Kohler

PD134: TDI TRIMIX TRAINING, Interview with Brian Carney of TDI-SDI.  Brian discusses the benifits and hazards of using Trimix.

TRIMIX

1. Membrane Nitrox mixing systems. 2. Dan Crowell talks about CCRs LINKS: and

Nitrox mixing systems and Closed Circuit Rebreathers

PD154: Dr. Neal Pollock at DAN discusses the issues surrounding aging and technical diving.Dr. Pollock is the Research Director at Divers Alert Network. Also, a Senior Research Associate at the Center for Hyperbaric Medicine at Duke University Medical Center. Also, he is a Board member of the American Academy of Underwater Sciences Foundation.

PD154: Dr. Neal Pollock at DAN discusses the issues surrounding aging and technical diving. Dr. Pollock is the Research Director at Divers Alert Network. Also, a Senior Research Associate at the Center for Hyperbaric Medicine at Duke University Medical Center. Also, he is a Board member of the American Academy of Underwater Sciences Foundation.

Tech Diving and the aging diver.

: Interview with Ralph DiPanfilo of NSS-CDS about the progression of Cave Diving Training from Cavern Diver to Full Cave Diver. &lt; Originally recorded at Floyd's Diner in High Springs FL in 2007 &gt;

CaveDive Training Discussion

Martin Parker

Interview with Martian Parker of AP Diving about the Inspiration Closed Circuit Rebreather. PD171: We discuss, the development history, CE approval and what's new in 2015 for Inspiration CCR. Including; the new color Vision Electronics and HUS.

INSPIRATION CCR-Rebreather interview w/ Martin Parker.

PD149: Intrw w/ Dr Neal Pollock: Research Director at Divers Alert Network about Thermal Physiology &amp; effects on Decompression Stress in Diving

Thermal Physiology & its effects on Deco Stress,

Brett Hemphill

1. Post beneath the Sea. BTS 2007 post-mortem.2. D.A.N. Tech Time with Richard Vann PhD. 3. Deep Cave Cave exploration interview with Brett Hemphill

Deep Cave exploration with Brett Hemphill

We talk about CCR diving and diving with Mega Fauna in the Galapagos. Episode 178

We talk about CCR diving and diving with Mega Fauna in the Galapagos. Episode 178

Scuba in the Galapagos Islands

Diver Propulsion Vehicles: Interview with Will Baxter of DIVE XTRAS about new Diver Propulsion Vehicle Technology and diving in the Pacific Northwest.

DPV Technology

PD-17:Cave Diving in North Florida. Sound Scene Tour of Cave Diving the Springs of Northern Florida. Interview with Ralph DiPanfilo of NSS-CDS.

PD-17: Cave Diving in North Florida. Sound Scene Tour of Cave Diving the Springs of Northern Florida. Interview with Ralph DiPanfilo of NSS-CDS.

Cave Diving the Springs of Northern Florida. P17

PD129: GUE interview with Bob Sherwood of GUE about DIR- Fundamentals course.

PD129: GUE interview with Bob Sherwood of GUE about DIR- Fundamentals course.

DIR-Fundamentals

Decompression Safety Interview: With Dr. Richard Vann Phd of DAN.

Decompression Safety

PD14:  Interview with Karl Shreeves of PADI DSAT; we discuss Physical Fitness and the Technical Diver.

Physical fitness and the Technical Diver

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