Deco Procedures
This course examines the theory, methods and procedures of planned stage decompression diving. This program is designed as a stand-alone course or it may be taught in conjunction with TDI Advanced Nitrox, Advanced Wreck, or Full Cave Course. The objective of this course is to train divers how to plan and conduct a standard staged decompression dive not exceeding a maximum depth of 45 metres / 150 feet.
The most common equipment requirements, equipment set-up and decompression techniques are presented. Students are permitted to utilize enriched air nitrox (EAN) mixes or oxygen for decompression, provided the gas mix is within their current certification level.
BOOKING
Reservation confirmations require a 50% deposit. We accept bank transfer, credit card or PayPal. Full payment must be settled in Mexican pesos at the daily USD exchange rate or in cash prior to the start of your dive activity. Deposits for reservations are non-refundable, in certain circumstances, such as unforeseen medical issues or emergencies, the course or dive activities may be rescheduled. Any cancellation less than 24 hours prior to your first day of diving will be charged in full.
SCHEDULE
You can customize your course or dive trip according to your preferences and schedule throughout the year, we are open for training and diving seven days a week. The schedule can be adapted and subject to change due to weather conditions.
What will you learn?
Theory:
Overview of Decompression Safety Stops Compared to Required Stops.
Physics
Physiology
- Mechanics of bubble formation.
- Advantages of hyperoxic mixes for decompression.
- Nitrogen absorption and elimination.
- Carbon dioxide toxicity.
- Ascent / Descent rates.
- Hyperthermia.
- Hypothermia.
- Psychological aspects
Decompression Options
- Air.
- Nitrox.
- Oxygen.
Equipment Considerations
Dive Tables vs. Computers
- Introduction and review of different models (Bühlmann, DCIEM, US Navy, etc.)
- Proper use of electronic multi-level dive computers for dive planning and decompression.
Dive Planning
- Standard operation.
- Emergency planning.
Procedures
- Primary and decompression gas.
- Descent.
- Ascent.
- Fixed or Drifting
- Decompression Methods.
- Support.
Land drills:
Selection and preparation of equipment suitable for soft overhead environment.
Conduct team oriented drills, buddy checks, for lift bag deployment.
Conduct team oriented drills, buddy checks, for gas switching procedures.
Gas matching among buddy team.
Demonstrate familiarity with basic hand signals.
Demonstrate adequate pre-dive planning.
- Limits based on personal and team gas consumption.
- Exact dive and decompression profile.
Water skills:
Use START* before every dive.
Stress analysis and mitigation.
Demonstrate buoyancy control; ability to hover at fixed position in water column without moving hands or feet
Show good awareness of buddy and other team members through communications, proximity and team oriented dive practices
Demonstrate comfort swimming on surface and at depth carrying single decompression stage cylinder
Demonstrate ability to drop and retrieve single decompression cylinder while maintaining position in the water column
Demonstrate ability to deploy a lift bag solo and as member of team.
Demonstrate controlled / staged ascent on lift bag / emergency ascent line (lost a scent line)
Remove and replace mask (deploy backup mask)
Demonstrate appropriate reaction to gas hemorrhage from manifold or first stage, SPG and primary regulator
React to BCD inflator malfunction; disconnect LP hose, dump gas and orally inflate BCD/Wing to neutral buoyancy
Demonstrate ability to confirm gas switch(es) at depth with buddy/team members
Buddy breathing decompression gas for at least 1 minute
Demonstrate appropriate reaction to simulated free-flowing decompression regulator
Demonstrate appropriate modifications to deco schedule in decompression emergency (over time, over depth) (to be simulated)
Demonstrate tired diver tow at depth and on surface, 30 meters / 100 feet lateral each.
Complete a horizontal breath hold swim at depth for 15 meters / 45 feet.
Properly execute the planned dive within all pre-determined limits.
Contingency situations and problem-solving, as appropriate by instructor.
A safety stop of at least 3 minutes shall be conducted on all no-decompression dives and proper staged decompression stops whenever and wherever mandated.
Demonstrate (simulated) emergency gas sharing at a stationary depth not to exceed 30 metres / 100 feet.
Demonstrate emergency deployment of a backup regulator or bail-out scuba system containing bottom mix at a depth not exceeding 30 metres / 100 feet
Demonstrate the proper deployment, management and use of the bottom mix, decompression mix and travel mix, if used.
Included throughout the course:
Private instructor.
Classroom sessions.
Transport to the cenotes or boat from the shop.
Tanques individuales, CCR, de montaje lateral y dobles.
Weights.
Rellenos de EAN 32.
Certification card.
Water and snacks.
No incluye:
Entrada a cenotes (Por día entre US$10 y US$15).
Equipo de Buceo
Manual o elearning
Mezclas de Nitrox o Helio.
Lunch.
Seguro de buceo.
Additional Services
Equipment rental and/or sale
Basic diving gear
Rental US$ 5 each x day (Wetsuit, Mask, Boots, Fins)
Ejemplo de Gases
EAN 50, 80 CUF. US$ 21 por tanque
O2 100% 13 CUF. US$ 25 por tanque
Trimix 21/35 80 CUF. US$ 85 por tanque
Cave Equipment
Sidemount Harness (Rental US$ 20 x day).
Sidemount Regulator Set (Rental US$ 25 x day).
Twinset Wing / Backplate (Rental US$ 20 x day).
Twinset Regulator Set (Rental US$ 25 x day).
Stage Regulator and Rig ( US$ 15 x day).
Cave Primary Light (US$ 20 x day).
Backup Light (US$ 5 usd x day).
Depurador
Cartucho EAC US$ 85 (4-5 horas de fregado aprox.)
Sofnolime 8 - 12 US$ 12 x lb.
Important Information:
Plan carfully your trip to minimize your enviromental impact, please avoid sunscreen / mosquito repellent or other skin products for all water activities. Whenever possible, choose rechargable batteries and aviod to carring things like disposable razors, plastic bags, plastic water bottels, etc. We are in a very fragil and pristine enviroment and is our responsability to keep it that way.
Haremos todo lo posible para mejorar sus habilidades y conocimientos, también vamos a establecer el mejor plan de formación de acuerdo a las habilidades y la experiencia de cada buceador para ayudarles a tener éxito en el curso, pero consideran que a veces necesitamos días extra para alcanzar los objetivos con un aula o sesiones de agua y aplicamos tarifa extra si es necesario. Recomendamos encarecidamente a los estudiantes planificar al menos dos días extra por si acaso.
Notas:
Please bring change of clothes & towels for cenote training days.
Todos los cursos están disponibles en inglés o español.