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The brain behind FATHOM Dive Systems
Nathan Fillion, the diver.
Nathan has a wonderful character, does not take himself seriously and it is down to earth. I really enjoyed this wonderful conversation.
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Interconnected tissues in decompression model
Multi-Exponential washout models. How to measure risk? DCS risk is intrinsically probabilistic and, not deterministic, in other words, there is no mathematical critical point in which you “can or can’t” get DCS. The risk changes continuously and gradually with decompression stress. Deterministic models work with compartments and base the decompression on a leading compartment in…
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Raspberry Pi Z W Monitoring Humidity and Temperature Via OLED Display Module
Supplies Hardware Required: If you already know how to setup the sensor, you only need the Python code below, if not, go to step by step instructions. Python code Below are the connections of OLED module with Raspberry zero w: Step by step Instructions Step 1- Install OS Install Raspberry Pi OS lite or Desktop…
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Ratio Deco 1:2 with 2 Decompression bottles
Standardized Gas Mixes: Setpoint Table Depth (meters)Time (minutes)51(BT x 2) -1554(BT x 2) -1057(BT x 2) -5601:2= BT x 2 (setpoint)63(BT x 2) +566(BT x 2) +1069(BT x 2) +1572(BT x 2) +20 Deep stop0~59 minutes of deco60~89 minutes of deco50 % of the depth 1260 % of the depth1Deep Stop table Example: A diver…
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The RF4 Program and Proceedings
The RF4 scientific program committee consists of Drs. John Clarke, Simon Mitchell, Neal Pollock, Frauke Tillmans, and journalist Michael Menduno. The four primary focal areas are diving safety, physiology, technology, and training. Proceedings of the meeting will be published and made publicly available. Do you know who they are? Check these interviews Save The Dates…
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Costal Ecosystems
The coastal zone is the interface between land and sea, this zone extends its influence on the intertidal environment and beyond. These areas also cover the watershed draining into coastal areas and are interrelated, interdependent and enclosed multiple ecosystems. As we debated in the coral reef article, the coast is a system-integration, we have a coastal…
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First stop, which one?
Before you continue reading, review this article: Gradient Factors in a Post-Deep Stops World, because this post was inspired by it. In addition, I recommend you read: Gradient Factors and multi-model approach to decompression. What first stop should I use? How should I modify GF to get a better and cleaner decompression? Deep stops are…
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Planning dives with DIVESOFT
DVESOFT has released an application for smartphones, with the app you may plan dives (CCR/OC), make todo lists, register trips and dives, add devices and a checklist for assembling CCR liberty units. As you see, it’s a comprehensive application for DIVESOFT products, especially for liberty CCR(s). Nevertheless, if you only used their Freedom DC, it’s…
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Multi model approach to deco
Support information for Ratio Deco Decompression Procedures There’s a difference between a decompression model and a decompression strategy, one of the best propositions for it is what JP Imbert called a “multi model approach to decompression safety”, another interesting idea is “Ratio Deco.” Both are valid, extremely useful and based on the same principles; but…
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DIVESOFT Freedom Dive Computers
Tech DC advantages I’ve been using Freedom DC for a long time. From my experience, it is the best computers on the market today. I’m telling you this for many reasons: First, this DC is suitable for any type of diving, this means that you may upgrade or buy the firmware you really need, no…
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Is Chichiriviche endangered?
Chichiriviche is a small town located in la Guaria. The entire town’s population livelihood dependes on two economic activities, fishing, and diving tourism. Consequently, the state of the coral reef is paramount in development for both businesses. The mear existence of the town causes pressure over the reef, but not so much as the externalities…
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Does Coral Reef have a price?
We managed to navigate the world based on a value system that classified and set hierarchies. This structure is embedded in us to a point that our society ethics that govern our behavior are called core values. But why is this concept important and what relationship does it have with Coral Reef? Understanding how humans…
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Search line in PSD
Despite some debate over the best way to manage a search line, the consensus is attaching a diver to a search line by a harness or BCD. Mark Philips authored an article for PSDiver Magazine in which he described how to secure the diver by a tether line. This safety line is the most secure…
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DIVING INSTRUCTOR CLEARED IN ‘SAFETY-STOP’ DEATH CASE
Are you an instructor? This article is a must read. The problems aroused during any immersion (open water or not) are not always easy to identify. Being an instructor is a huge responsibility, sometimes, the public do not comprehend the complexity of this sport. It’s imperative that everyone should be checked by a physician prior…
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Opinel knives
When I go camping, I carry utensils for preparing food and a dedicated folding knife for this. Today’s post is about which knife I use for preparing meals during camping and walking day trips. I like simplicity. That is why I like tools that are easy to use and clean. For that reason, I bought…
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Gerber lockdown drive multitool
is a low profile multitool with eight (8) tools, although for me the main core is the “drive”, likewise I consider the file and exchangeable blade (#11) essential for my trips; of course, the blade is a welcome addition, but for my needs, I would exchange the blade for a saw.
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Merry Christmas
When I look back over my shoulder to peek at the year left behind, I have a mixed bag of feeling. It has been exceedingly difficult. Challenging times require spirit, we all are fatigued at this point, but we can always reach inside for guidance. You may be lost at this point (within the pandemic),…
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Amazing what Charlie Roberson has accomplished
On Saturday, December 11, 2021, KUR divers Charlie Roberson and Andy Pitkin explored and surveyed 564 ft of new passage at the bottom of Mt. Doom. Originally explored in 2007, Mt. Doom was the deepest point in the cave at 407 ffw, until deeper sections were explored last season.
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Ratio Deco- Doing the Numbers
Example of Ratio Deco for 45 meters set point. 2 Method discussed. 45- 1:1
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Problem reaching your valves and isolator on your twins/ doubles?
Do the following exercises to improve your movements and possible fix this issue. The world’s population is aging and becoming healthier; therefore, we see more elderly people doing more outdoor activities. Diving is no exception; much of the technical diving community has a middle-age demographic structure. Other factors that contribute to the age range in…
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John Clarke
John R. Clarke, Ph.D. (born November 20, 1945) is an American scientist, private pilot, and author. He served as Scientific Director at the United States Navy Experimental Diving Unit (NEDU). Clarke is recognized as a leading authority on rebreather engineering. He has an extensive academic career in biological and physiological sciences. He is an excellent…
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An effortless way to add weight on my Sidemount rig
Author: Carlos Lander, edited by: Bruce Konefe Normally when I travel, I prefer to use my “Dive Rite – TransPac” sidemount configuration, twin tanks are not always available. My sidemount configuration works great, however, I needed to find a better solution to mount the lead weights, to help perfect my buoyancy/ trim. With a small…
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Rebreather Setting Leads to Dangerous Equipment Failure
that gear is used for. Servicing for regulators varies on the brand and type of equipment, so making sure the technician knows if it will be used on a close-circuit rebreather could have prevented an irregular pressure setting. It is always best before diving to double check your apparatus and check your line pressures to…
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Joe Porter will be missed
“Wherever you fare till your eyries receive you at the journey’s end!”
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