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Open Water Course |





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We are enthused about your interest in immersing yourself in the exciting and invigorating sport of Scuba Diving. The underwater world offers excitement and adventure as well as beauty and tranquility, and you can join the myriad scuba divers who journey below the water’s surface for the first time every year.
The first step in beginning your own journey into the world beneath the waves starts by enrolling in a PADI Open Water Diver Course. The PADI Open Water Diver Course provides the initial Scuba Diving Certification and will enable you to dive as a confident, safe, and knowledgeable diver anywhere in the world down to a depth of sixty feet.
Upon completion of your Open Water Diver Course you will become a fully certified PADI Open Water Diver. The PADI Open Water Diver certification is the most recognized Scuba certification in the world. PADI, the Professional Association of Diving Instructors, is the certifying agency through which Lancaster Scuba Center administers all of the initial scuba certifications and a vast number of additional certifications. With your PADI certification in hand, you will be able to seek out your own diving adventures or join us on local, domestic, or international dives. You will also be able to continue your diving education to become even more familiar with the underwater world.
Course Description:
Each Open Water Diver Course is conducted by one or more of Lancaster Scuba Center’s PADI Dive Instructors and comfortable class sizes emphasize individual attention to each student during the learning process. The Open Water Diver Course is comprised of three distinct educational activities. Those activities include:
- Knowledge Development
- Confined Water Dives
- Open Water Dives
Knowledge Development:
The Knowledge Development portion of the class builds your understanding of the basic principles and procedures of diving. Developing this knowledge is accomplished with ease through three modes. First you begin by reading your Open Water Manual. The facts and information acquired during the reading are then expounded upon by watching the Open Water DVD that coincides with the reading. Finally, the facts and concepts presented in the reading and the DVD are summarized and covered again by your Instructor. These classroom sessions with your instructor are the perfect time to ask and discuss any questions that you have about any of the material that you have covered.
Confined Water Dives:
The Confined water dives allow you to take the basic Scuba Diving skills that you learned during your Knowledge Development and practice them in a local heated indoor pool. Your Instructors and Divemasters will demonstrate and explain the many skills needed in diving and will then have you practice these skills under their supervision. You’ll learn everything from setting up your gear to clearing your mask of water without surfacing. The Open Water Diver Course is performance-based, meaning that you take as much time as you need to practice each skill until you and your instructor are both confident in your new abilities.
The majority of the Open Water Diver Courses offered at Lancaster Scuba Center are formatted so that the Knowledge Development and Confined Water Dive sections of the course are portioned out across an approximate five week period. Each week you and your Instructor will cover one section of Knowledge Development with one corresponding portion of Confined Water Dives. We recognize that this 5 week program may not fit everyone’s schedule. In light of this, Lancaster Scuba Center also offers condensed and individually tailored classes to meet your needs. You may also complete all of the Knowledge Development phase of the class from home via the internet using the PADI e-Learning system, another time saving measure. Please contact Lancaster Scuba Center at 717.39.SCUBA or by email at info@lancasterscuba.com for additional questions on course details and scheduling.
Open Water Dives:
After your confined water dives, you will continue your diving education during four open water dives with your Instructor at a dive site. The Open Water dives are the culmination of all your skill building thus far, and allow you to fully experience the underwater adventure. Most of the students at Lancaster Scuba Center opt to make these dives at one of our local Scuba Diving Lakes. These lakes are specifically designed and maintained for Scuba Divers and include underwater platforms for training and underwater attractions for the entertainment of student and certified diver alike. Many of the Scuba lakes that Lancaster Scuba Center frequently uses include Bainbridge Scuba Center, Willow Springs, and Dutch Springs. (Admission to the Scuba lakes is not included in the price of the course). If you would like to finish your Scuba certification by completing your Open Water Dives in a more exotic location, you can many times finish your certification on one of Lancaster Scuba Center’s various trips to tropical dive destinations, or we can refer you to another PADI facility anywhere in the world.
Course Tuition:
Lancaster Scuba Center’s Open Water Diver Course is an ALL INCLUSIVE package with the exception of your personal gear. The course tuition of $370.00 includes the following: Instructor Fee, admission to the pool facility, PADI Open Water Diver Manual, Dive Log, Deluxe Dive Binder, Student Record Folder which includes a Medical Questionnaire which must be completed before participating, Recreational Dive Planner, use of Educational DVD, use of rental Gear, Open Water Certification Dives, and a PADI certification card upon completion of the course. The personal gear needed includes mask, snorkel, fins, boots, and a weight belt and may be purchased at Lancaster Scuba Center. Making sure that you are comfortable and confident in these items is paramount to your success in the Open Water Diver Course. The Lancaster Scuba Center Sales Staff will work closely with you to ensure a perfect fit of these items and to educate you in your available choices.
Participate in a Discover Scuba if you are interested in Scuba Diving but would like to give it a try before you take the plunge into an Open Water Course!
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Course Schedule |

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Please contact Lancaster Scuba Center at 717.39.SCUBA or email at info@lancasterscuba.com for additional or customized class scheduling.
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| Course |
Start Date |
Location |
Advanced Open Water
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09/12/2010 |
LSC |
Advanced Open Water
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10/10/2010 |
LSC |
Advanced Open Water
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11/07/2010 |
LSC |
Digital Underwater Photography
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09/16/2010 |
LSC |
Digital Underwater Photography
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09/16/2010 |
LSC |
Discover Scuba
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10/10/2010 |
Lititz Rec-Center |
DIscover Scuba
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11/07/2010 |
Lititz Rec-Center |
Discover Scuba
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11/28/2010 |
Lititz Rec-Center |
Discover Scuba
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09/12/2010 |
Lititz Rec-Center |
EFR
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08/31/2010 |
LSC |
EFR
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10/05/2010 |
LSC |
IDC Instructor Development Course
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10/29/2010 |
LSC |
NITROX
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09/14/2010 |
LSC |
NITROX
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10/12/2010 |
LSC |
Open Water
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08/28/2010 |
Lampeter Strasburg YMCA |
Open Water
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09/12/2010 |
Lititz Rec-Center |
Open Water
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09/15/2010 |
Hempfield Rec-Center |
Open Water
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10/02/2010 |
LS-YMCA |
Open Water
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10/10/2010 |
Lititz Rec-Center |
Open Water
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10/30/2010 |
LS-YMCA |
Open Water
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11/07/2010 |
Lititz Rec-Center |
Open Water
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11/28/2010 |
Lititz Rec-Center |
Rescue
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09/12/2010 |
LSC |
Rescue
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10/17/2010 |
LSC |
Seal Team
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10/17/2010 |
Lititz Rec-Center |
Seal Team
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09/12/2010 |
Lititz Rec-Center |
Seal Team
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09/15/2010 |
Hempfield Rec-Center |
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Bubblemaker |
The PADI Bubblemaker program is designed for children 8 years and older to discover the excitement of scuba diving. This fun two-hour session begins with the basic rules of scuba diving, taught by a PADI professional to insure the safety of each student. Lancaster Scuba Center provides scuba equipment made specifically for children, allowing them to experience the underwater world to a maximum depth of six feet. At the end of the session the student will receive a Bubblemaker packet and a certificate of completion for having experienced the underwater world.
The Bubblemaker program fee is $35.00. Any child age 8 or older may participate in Bubblemaker. The only items that you need to bring with you for your Bubblemaker experience are a bathing suit, a towel, and a release form. The release form, which includes a Medical Questionnaire, must be completed before participating in the Bubblemaker program.
You may pick up your release form and schedule a Bubblemaker session at the Lancaster Scuba Center. For upcoming Bubblemaker dates, check the Course Schedule
page and contact Lancaster Scuba Center at 717.39.SCUBA or by email at info@lancasterscuba.com for any questions about the Bubblemaker experience.
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Emergency First Responder Course - EFR |

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The Emergency First Responder (EFR) Course provides the necessary education and training to make sure that you are confident in your ability to provide someone with aid in the event of a medical emergency. The skills you acquire in the EFR course are important not only in diving, but also in your daily interactions with friends, family, and coworkers. In the EFR course you will learn skills such as Emergency Scene Assessment, CPR, First Aid, Automatic External Defibrillator (AED) use, and introduction to Oxygen Administration. By completing the EFR course, you not only complete the certification necessary for taking the Rescue Diver Course, but you will also meet the First Aid / CPR guidelines for organizations like OSHA, the U.S. Coast Guard, and the Boy and Girl Scouts of America.
Course Tuition:
The Emergency First Responder Course tuition is $80.00 and includes the EFR Instruction Manual, Instructor Fee, use of CPR and First Aid course materials and the use of an Instructional DVD. The EFR course is generally broken into two classroom sessions. For upcoming class dates, check the Course Schedule page and contact Lancaster Scuba Center at 717.39.SCUBA or by email at info@lancasterscuba.com for any questions about the course or to ask about additional class dates.
You can find out more about the Emergency First Responder Course by clicking this link to PADI.
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The PADI e-Learning Open Water Diver Course option is the initial Scuba Certification course for those with extremely active schedules. The PADI e-Learning course has been developed to allow you to begin an online independent study of your PADI Open Water Diver Course. Taking the e-Learning option allows you to complete the Knowledge Development portion of your PADI Open Water Diver Course at your own pace from the convenience of your own internet work station - at home, in the office, on the train, etc. After finishing your e-Learning independent study, you will physically learn to dive under the guidance of a Lancaster Scuba Center PADI Instructor. Contact Lancaster Scuba Center, at 717.39.SCUBA or by email at info@lancasterscuba.com, at your convenience to schedule a time to complete your Confined Water and Open Water portions of your course. To find out more about the Confined Water and Open Water segments of the e-Learning course, or to learn about the traditional PADI Open Water Course, navigate to our Start Diving page.
Course Tuition:
You can begin your course immediately by clicking on the link below, entering your registration information with PADI, and paying the e-Learning tuition of $120.00. You may then, at your leisure, schedule your Confined Water and Open Water segments of your course and pay the remaining course tuition of $315.00 to Lancaster Scuba Center. Lancaster Scuba Center’s e-Learning Open Water Diver Course is an ALL INCLUSIVE package with the exception of your personal gear. The e-Learning course tuition of $315.00 includes the following: Instructor Fee, admission to the pool facility, Dive Log, Recreational Dive Planner, use of rental Gear, Open Water Certification Dives, and a PADI certification card upon completion of the course. The personal gear needed includes mask, snorkel, fins, boots, and a weight belt and may be purchased at Lancaster Scuba Center. Making sure that you are comfortable and confident in these items is paramount to your success in the Open Water Diver Course. The Lancaster Scuba Center Sales Staff will work closely with you to ensure a perfect fit of these items and to educate you in your available choices.
To find out more about the e-Learning program or to sign up for e-Learning with Lancaster Scuba Center, click the link below.
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Divemaster Course |

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The PADI Divemaster Course will allow you to expand your love of Scuba Diving into the realm of the PADI Dive Professional. If you not only have a passion for Scuba Diving, but also wish to share your passion by educating other divers, the Divemaster Certification is the best way to begin your role as Scuba Educator. The Divemaster course will provide you with the necessary skills to supervise dive activities and assist instructors with student divers. The Divemaster Course is comprised of classroom sessions, training exercises, pool training, and an internship program.
Course Tuition:
The Divemaster Course tuition is $440.00 and includes the Divemaster Crew Pack, Instructor Fee, and your air for the training dives. The Divemaster course generally takes most individuals anywhere from 3 months to a year to complete. For upcoming class dates contact Lancaster Scuba Center at 717.39.SCUBA or by email at info@lancasterscuba.com.
Course Prerequisites:
- PADI Advanced Open Water Certification or the equivalent level of training from a recognized Scuba Certification Agency
- PADI Rescue Diver Certification or the equivalent level of training from a recognized Scuba Certification Agency
- EFR Certification or the equivalent level of training from a recognized First Aid / CPR Certification Agency
- You must have at least 20 logged dives to begin the certification training and 60 logged dives to complete the PADI Divemaster Certification
- You must be at least 18 years of age
You can find out more about the Divemaster Course by clicking this link to PADI.
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Technical Diver Technical EANx, Helitrox and Decompression Techniques |





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| The NAUI Technical Diver program is designed to introduce experienced advanced divers to the techniques and methods employed in diving beyond the traditional recreational diving limits. The course provides training in decompression techniques, the use of technical-enriched air nitrox and oxygen decompression gases, and the fundamentals of using oxygen-enriched helium-based mixed gas (called Helitrox). Candidates entering the program must already have mastered fundamental recreational diving skills such as exact buoyancy control, dive planning protocols, teamwork, and emergency management. Students enrolled in the NAUI Technical Diving program will have the opportunity to cultivate these skills and many new ones while using more sophisticated equipment designed for pursuing technical level diving. |
| Upon successful completion of this course, graduates are considered competent to plan and execute dives, no deeper than 150’, that require stage decompression utilizing air, EANx, Helitrox, and Oxygen for decompression without direct supervision provided the diving activities and the areas dived approximate those of training. |
| Paying your fee and completing the required number of dives does not guarantee you certification. |
PREREQUISITES FOR ENTERING THE COURSE
- Age: 18 years or older.
- NON-SMOKER: No exceptions.
- Certification: NAUI Master Scuba Diver, Deep Diver, EANx Diver or equivalent levels.
- Dive Experience: 75 dives with 10 using EANx.
- Physical: You will need to be medically cleared and physically fit.
- Swimming Ability: Be able to swim 50 feet underwater in one breath. Be able to swim 300 yards in 12 minutes or less.
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SCOPE OF COURSE
- The training depths for these dives are no deeper than 150 fsw. Maximum PO2 is 1.4 atm for working portions of the dives and 1.6 atm for decompression.
- No dives may exceed an equivalent narcosis depth of 130 fsw; an END of 100 fsw or less is generally employed on the training dives.
- The in-water instructor to student ratio will never exceed 6 to 1 for the technical EANx portions of the dives and 4 to 1 for all other dives.
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ACADEMIC REQUIREMENTS
Classroom work emphasizes decompression theory and management, diving physics and physiology, oxygen exposure management, equipment, dive planning and emergency procedures.
The following texts shall be used (an asterisk * denotes recommended but not required texts):
- “Physics, Physiology and Decompression Theory for the Technical and Commercial Diver” by Bruce Wienke.
- “NAUI RGBM Tables” by Bruce Wienke and Tim O’Leary *
- Instructor provided materials.
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SKILL REQUIREMENTS
- For each dive students will define oxygen limits based on PO2 of 1.4 atm or less for the working portion of the dive and 1.6 atm or less for decompression stops.
- For each dive students will analyze all gas mixtures and label each accordingly with mix and MOD.
- For each dive students will complete a Technical Diver Plan and a Team Planner.
- Set up personal scuba systems for each dive satisfying all training, environmental, and physiological constraints.
- Establish safety and emergency procedures, contingency strategies, abort and bailout plans.
- Demonstrate proper buoyancy control and trim during dives and deco stops.
- Turn around or begin the ascent at the predetermined back gas pressure or bottom time.
- Demonstrate proper underwater communications.
- Shut down failed regulator and isolate for catastrophic gas loss (< 15 sec).
- Shutoff and switch over to redundant regulator.
- Gas sharing, simulate out-of-gas scenario over a distance of 30 feet.
- Remove/replace stage bottles in timely fashion.
- Conduct planned gas switches.
- Lost visibility – maintain contact with team and continuous line to the surface.
- Equipment failure management drills.
- Missing diver search procedures.
- Rescue skills.
- Execute staged decompression stops.
- Demonstrate mastery of emergency procedures (abort plan, omitted deco protocols, emergency first aid).
- Demonstrate proper descent and ascent rates and depth, time, and gas management.
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EQUIPMENT REQUIREMENTS
Each student must own and be familiar with all of the following equipment. Care should be exercised when purchasing new gear, however, in order to avoid buying inadequate or unsafe equipment. Much of the so-called technical diving gear that is marketed today is inappropriate for serious technical diving. Please contact us before making any new gear purchases.
Cylinders:
- Double cylinders with a dual manifold and isolation valve. DIN valves are mandatory. Your cylinders may be steel or aluminum; aluminum cylinders are mandatory if diving in a wetsuit. You should be able to physically manage your choice of cylinders.
- One stage cylinder of 40 cu. ft. or greater for decompression gas (40 cu. ft. is recommended; larger capacities are unnecessary for this course). We will cover proper marking of the stage cylinders and rigging hardware in class. The cylinder should be oxygen clean. Aluminum cylinders (40 to 80 cu. ft.) are the best choice for deco bottles. The use of any steel stage is prohibited. DIN valves are recommended for the stage cylinders.
- Argon and/or air inflation systems for drysuit diving are necessary. Helitrox is inappropriate for suit inflation. Six to 13 cu. ft. aluminum/steel cylinders are acceptable for this purpose.
Regulators:
- Back cylinder configuration: two first stages with each supplying one second stage. The primary regulator’s first stage is attached to the right post of the manifold and has a 7-foot hose leading to the second stage. The low-pressure inflator to the BCD wings should come off of the primary first stage (right post). The back up regulator is attached to the left post and supports the one SPG (no consoles). If you wish to carry a low pressure inflator for contingency dry suit inflation, shooting lift bags etc., it should also go onto the back up regulator.
- Oxygen cleaned regulator and SPG for the stage bottle.
- Argon regulator: first stage must have an over pressure relief valve.
Buoyancy Compensators:
- A buoyancy control device capable of carrying your bottom mix and deco gases is required. Standard single bladder wings of 55-lb lift are adequate for most individuals.. A stainless steel or aluminum backplate is recommended. NO overly large, dual bladder wings or BUNGIE (Bondage) wings will be allowed during this class.
Instrumentation:
- Each diver needs one depth device and one timing device. A wrist mounted digital bottom timer/depth gauge is the best choice for technical diving.
- Compass
Exposure Suits:
- A dry suit with a separate suit inflation system is required. The inflation first stage must be equipped with an over pressure relief valve.
- Optional: (males) external urinary relief valve.
Other Equipment:
- Mask/fins (no snorkel).
- One cutting device required, with two recommended.
- Underwater writing device such as a slate or wetnotes.
- Two lift bags (50 to 100 lb lift) and one primary reel with at least 200 ft of line.
- One safety reel or spool with at least 100 ft of line.
- Two lights.
- Hardware for rigging stage and decompression bottles.
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Tuition:
Technical Diver Course Price: $ 800.00
When you complete this course you will receive THREE NAUI certification cards. Technical EANx, Decompression Techniques and Helitrox Diver.
For each course separately:
Helitrox - $350.00 and a minimum of 4 dives (note – this course will be conducted within recreational diving limits unless combined with Tech EANx and Decompression Techniques)
Decompression Techniques - $400.00 and a minimum of 6 dives
Technical Nitrox EANx - $300.00 and a minimum of 6 dives
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| Note: These prices do not include course materials, equipment or charter fee. Paying your Tuition and completing the required dives does not guarantee certification. |
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THE NAUI TRIMIX COURSE |
| The NAUI Trimix program trains technical divers in the use of oxygen/helium/nitrogen gas mixtures while allowing them to gain supervised experience in the protocols of deep and extended range diving. The program also accentuates the logic behind the choices of different EANx, trimix, and oxygen decompression gases, and it thoroughly introduces students to the most contemporary decompression theory and tables available today, the Reduced Gradient Bubble Model. Classroom work emphasizes advanced decompression theory and management, gas mixing, diving physics and physiology, oxygen exposure management and dive planning. Practical sessions include rigorous cultivation of proper equipment selection and configuration, and technical diver skill execution. Finally, the program is very experience oriented and stresses the practical application of deep diving on mixed gases. |
| The NAUI technical diving curriculum includes four helium-based mixed-gas courses: Helitrox, Heliair, Trimix I, and Trimix II. Helitrox is a hyperoxic trimix composed of helium and nitrox with an oxygen content of 21 to 30 percent and helium 13 to 17 percent. Helitrox is designed for diving between 90 and 150 fsw resulting in low PO2 and PN¬2. NAUI offers helitrox training in both no decompression and staged decompression formats. We are now introducing helitrox diving in our Staged Decompression/Technical EANx program as the sensible alternative over “deep air” for dives to 150 fsw. Heliair is another specialized trimix with oxygen as low as 16 percent and helium content of 24 percent. It is specialized in that it is easy and convenient to mix. It replaces “deep air” in extended range diving to 180 fsw. Helitrox and Heliair diving are thoroughly covered in the NAUI Trimix I course, along with traditional trimix diving with oxygen content less than 21 percent and helium up to 40 percent in the bottom mix. The Trimix I course trains divers to utilize helium-based gas mixes to depths up to 200 fsw. NAUI Trimix II training extends the practical training depth up to 250 fsw. The Trimix I course requires six mixed gas dives plus earlier skill sessions conducted in a confined water setting. The Trimix II course is strictly a practical extension of the Trimix I program, and involves at least two additional dives to depths between 200 and 250 fsw. |
| A note on deeper (>250 fsw) trimix dives: The NAUI Trimix II course previously included training dives to as deep as 300 fsw. In 2004, NAUI reduced the training depth for Trimix II to 250 fsw. This provides a more reasonable depth range for training. Graduates of the Trimix II course have the training and tools to conduct deeper dives on their own if they so choose. However, NAUI recommends the training on and use of semi-closed or closed circuit rebreathers for dives in excess of 250 fsw. |
Prerequisites for the NAUI Trimix program:
- Minimum age 18 years old
- Medical clearance and physically fit (medical forms for a physician’s approval for diving will be provided to students before the course).
- Nonsmoker
- Minimum of 100 logged dives
- Certified in Decompression Techniques and Technical EANx
- Minimum of 20 logged and verified decompression dives within the limits of previous decompression techniques and technical EANx training. These dives should have been on doubles and required a gas switch to oxygen or EANx at the appropriate depth. The diver should come to the trimix program already skilled in the use oxygen and/or EANx stage bottles, gas switches, precise buoyancy control, and emergency protocols.
- Self sufficient
- Students must own all of the necessary equipment and be flexible about gear configuration (see section on equipment).
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| The NAUI Trimix course includes a full two to three days of classroom work, one to two days of equipment configuration work and skill drills in confined water, and six to eight or more progressively deeper dives. We believe that we offer the most comprehensive mixed gas training available in the Great Lakes and Northeast USA regions. |
Course Fee: The combined NAUI Trimix I and II course costs $825.00 plus student expenses. The course fee includes all classroom and openwater work, workbooks and handouts, specific RGBM dive tables for the training dives, and all instructor expenses. Student expenses include, travel, food, lodging, charter fee, and diving gas. A $200.00 deposit is due upon registering for the course. Balances of the course fee and the certification fee are due at the beginning of the first classroom session.
A stand-alone Trimix I course costs $720.00. A stand-alone Trimix II course costs $225.00. |
Course Limitations:
- Maximum PO2 is 1.4 atm for working portions of the dives and 1.6 for decompression.
- No dives may exceed an equivalent narcotic depth of 130 fsw; an END of 100 fsw or less is generally employed.
- The in-water instructor to student ratio will never exceed 4:1 (6:1 is permissible for Trimix Level I if a technical training assistant is present, and conditions are ideal).
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Lecture Outline
Introduction and Administration
- Course overview
- Introductions
- Waivers
- Prerequisites
- Minimum Dive Requirements
Introduction to Mixed Gases
- Mixed Gas
- Gas Properties
- Specific Heat Capacity
- Thermal Conductivity
- Core Temperature
- Suit Insulation
- Ideal Versus Real Gas Behavior
- Determining Best Trimix
- Trimix Blending
Mixed Gas Decompression
- Helium Versus Nitrogen
- Saturation/Desaturation
- Halftime Comparisons
- Equivalent/Effective Depth Formulas
- Dissolved Gas Models
- Free Gas Phase Models
- Schedule Comparisons
- Gas Selection
- Normoxic Ranges
- Decompression Mixes
- Gas Switching Problems
- Oxygen Window
- Decompression Time
Mixed Gas Physiology
- Human Responses to PO2
- RMV and VO2
- Metabolic Oxygen Consumption
- Personal Limitations
- Environmental Considerations
- Physiological Problems
Dive Planning
- Time Terminology
- Descent/Ascent Rates
- Dive Planning
- Gas Utilization Calculations
- Contingency Plans
Equipment
- The NTEC Gear Configuration
Procedures
- Team members and Players
- Surface Support
- Agency Protocols
- Accident Analysis
- Rescue Responses
- Emergency Responses
- Omitted Decompression
- DCS Signs and Symptoms
- Neurological DCS
- Desktop Decompression
- Skills and Techniques
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OPENWATER SKILLS AND TECHNIQUES
- For each dive students will define oxygen limits based on PO2 of 1.4 atm or less for the working portion of the dive and 1.6 atm or less for decompression stops.
- For each dive students will analyze all gas mixtures and label each accordingly with mix and MOD.
- For each dive students will complete a Technical Diver Plan and a Team Planner.
- Set up personal scuba systems for each dive satisfying all training, environmental, and physiological constraints.
- Establish safety and emergency procedures, contingency strategies, abort and bailout plans.
- Demonstrate proper buoyancy control and trim during dives and deco stops.
- Turn around or begin the ascent at the predetermined back gas pressure or bottom time.
- Demonstrate proper underwater communications.
- Shut down failed regulator and isolate for catastrophic gas loss (< 15 sec).
- Shutoff and switch over to redundant regulator.
- Gas sharing, simulate out-of-gas scenario over a distance of 30 feet.
- Remove/replace stage bottles in timely fashion.
- Conduct planned gas switches.
- Lost visibility – maintain contact with team and continuous line to the surface.
- Equipment failure management drills.
- Missing diver search procedures.
- Rescue skills.
- Execute staged decompression stops.
- Demonstrate mastery of emergency procedures (abort plan, omitted deco protocols, emergency first aid).
- Demonstrate proper descent and ascent rates and depth, time, and gas management.
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EQUIPMENT REQUIREMENTS
Each student must own and be familiar with all of the following equipment. Care should be exercised when purchasing new gear, however, in order to avoid buying inadequate or unsafe equipment. Much of the so-called technical diving gear that is marketed today is inappropriate for serious technical diving. Please contact us before making any new gear purchases.
Cylinders:
- Double cylinders with a dual manifold and isolation valve. DIN valves are mandatory. Your cylinders may be steel or aluminum; aluminum cylinders are mandatory if diving in a wetsuit. You should be able to physically manage your choice of cylinders.
- One stage cylinder of 40 cu. ft. or greater for decompression gas (40 cu. ft. is recommended; larger capacities are unnecessary for this course). We will cover proper marking of the stage cylinders and rigging hardware in class. The cylinder should be oxygen clean. Aluminum cylinders (40 to 80 cu. ft.) are the best choice for deco bottles. The use of any steel stage is prohibited. DIN valves are recommended for the stage cylinders.
- Argon and/or air inflation systems for drysuit diving are necessary. Helitrox is inappropriate for suit inflation. Six to 13 cu. ft. aluminum/steel cylinders are acceptable for this purpose.
Regulators:
- Back cylinder configuration: two first stages with each supplying one second stage. The primary regulator’s first stage is attached to the right post of the manifold and has a 7-foot hose leading to the second stage. The low-pressure inflator to the BCD wings should come off of the primary first stage (right post). The back up regulator is attached to the left post and supports the one SPG (no consoles). If you wish to carry a low pressure inflator for contingency dry suit inflation, shooting lift bags etc., it should also go onto the back up regulator.
- Oxygen cleaned regulator and SPG for the stage bottle.
- Argon regulator: first stage must have an over pressure relief valve.
Buoyancy Compensators:
- A buoyancy control device capable of carrying your bottom mix and deco gases is required. Standard single bladder wings of 55-lb lift are adequate for most individuals.. A stainless steel or aluminum backplate is recommended. NO overly large, dual bladder wings or BUNGIE (Bondage) wings will be allowed during this class.
Instrumentation:
- Each diver needs one depth device and one timing device. A wrist mounted digital bottom timer/depth gauge is the best choice for technical diving.
- Compass
Exposure Suits:
- A dry suit with a separate suit inflation system is required. The inflation first stage must be equipped with an over pressure relief valve.
- Optional: (males) external urinary relief valve.
Other Equipment:
- Mask/fins (no snorkel).
- One cutting device required, with two recommended.
- Underwater writing device such as a slate or wetnotes.
- Two lift bags (50 to 100 lb lift) and one primary reel with at least 200 ft of line.
- One safety reel or spool with at least 100 ft of line.
- Two lights.
- Hardware for rigging stage and decompression bottles.
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