Jeff Johnson

email 25 years film, medic, firefighter and  dive experience Exposure to a multiplicity of, sites, conditions and equipment Qualified Rescue, Cave, Rebreathers, Shipwreck, Mixed gas to over 400 ft water Fire Fighter, Medic, Technical Rebreather and Cave diver Instructor Trainer CPR and Medic 1st Aid Completed Maryland state training firefighter 3, EMT-B, Rescue, Response to […]

Medical questionnaires are also an important facet of your diver history and required for course participation.You should examine these prior to class where you will be given a physical copy to fill out and sign.Please discuss any questions you have with your physician who has experience with dive medicine.These forms are designed to help you

The Intro to Cave program instructs the student as to the protocols of exploring the overhead environment beyond the light zone.This course is designed with the single tank configuration in mind and within recreational depth limits. Not intended for extensive wreck orgear configuration, how to limit entanglement, light use as a primary light source, primary

1.        Must be qualified as an IANTD Advanced Open Water, Diver, First Aid, Oxygen Provider and IANTD Rescue or equivalent.            Qualification in two optional IANTD Specialty Programs is recommended.2.        Must provide proof of a minimum of 60 logged dives.3.        Must be a minimum of 18 years of age.

To begin to answer that question lets list those things that can kill you on a CCR: High PPO2 resulting in possible cns seizures, followed by probable drowning Low PPO2 resulting in possible asphyxia, with death the most likely outcome Hypercapnia, possibly resulting in the divers inability to respond and rectify the situation, followed by

Further develops skills and knowledge learned in Nitrox, expanding into the use of light helium mixtures to limit narcosis. Limiting narcosis will enhance; performance, the dive experience, your perception, response times and will also limit carbon dioxide retention. Maximum END 80 ftThis program employs mixtures of 21% – 40% oxygen up to 1.5 PO and

Cavern or Wreck Program The Cavern and Wreck program instruct the student as to the protocols of exploring the overhead environment within the light zone.This course is designed with the single tank configuration in mind and within recreational limits. Not intended for extensive wreck or cave exploration.The student is exposed to basic concepts of overhead

The CCR Cave Diver Program introduces the diver to basic through complex cave dives involving; line gaps, jumps, circuits and traverses. Practice and build proficiencyusing multiple reels, including; primary, safety, and gap reels while utilizing the eCCR. The CCR Cave course requires 120 minutes more bottom time than OC full cave.introduced to advanced forms of

All rebreathers have specific complexities which introduce forms of risk not experienced by open circuit divers. The fundamental difference between open-circuit scuba and rebreather systems is that while utilizing scuba, the diver mixes a specific gas for a maximum depth. When CCR is used, the gas is constantly changing.Gas in the ccr loop is a

Because of the problems associated with oxygen toxicity, nitrogen narcosis, and decompression sickness, the maximum safe limit for breathing air is about 200 feet (61 meters). To overcome these problems, gas mixtures other than air should be used. Perhaps the most severe and potentially deadly of the limitations is CNS oxygen toxicity. Air contains about