• Tec 50

Tec 50

Welcome to PADI Tec 50
This web page provides links to the materials you will need to prepare for and complete your PADI Tec 50 course.

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Any questions you have regarding this material should be directed to your instructor or our Training Department at training@diveaai.com. This material is not appropriate for anyone who is not enrolled in the PADI Tec 50 course and should not be used in place of formal technical dive training.

Course Description

PADI Tec 50 is the final course in the sequence of entry-level technical diving courses for deep air decompression diving. In this course, you will continue using air, enriched air and oxygen to practice accelerated decompression using standard open circuit, multiple cylinder tec diving equipment. You will perform multiple stop decompression dives with two decompression gases to depths as deep as 50 meters/165 feet.

Course Prerequisites

Student divers must meet the following training prerequisites before starting the PADI Tec 50 course:

  1. Certified as a Tec 45 diver or provide a qualifying certification from another training organization. For the purpose of this level, a qualifying technical certification is one that qualifies the student to make limited decompression dives to 45 meters/145 feet using air and EANx using open circuit, double cylinder scuba equipment.
  2. Certified as a PADI Rescue Diver or provide a qualifying certification from another training organization. For this course, a qualifying certification is proof of training in diver rescue. Students who meet this prerequisite through a qualifying certification must provide proof of training in CPR and First Aid within the previous two years.
  3. Minimum age: 18 years
  4. Have minimum of 100 logged dives, of which at least 20 dives were made with enriched air nitrox deeper than 18 meters/60 feet, and at least 15 dives (with or without EANx) dives that were deeper than 30 meters/100 feet.

Tec 45 and Tec 50 Equipment Requirements

Student divers should assure that they have the following equipment for all training dives for the PADI Tec 45 and Tec 50 technical diving courses.

  • Double cylinder of at least 12 liter/70 cubic feet each, with isolator manifold. The isolator manifold is not required for divers using sidemount configuration. Divers known to have a very low gas consumption rate may, at the instructor’s discretion, use lower capacity cylinders than specified here, provided the diver will have ample gas to assist a team mate in a gas sharing emergency.
  • Primary and secondary regulators for back mounted double manifolds, one with two meter/seven foot hose for air sharing and one with SPG. Note: In sidemount configuration, one reulator must have the two meter/seven foot hose, and both regulators must have an SPG.
  • Stage/decompression cylinder(s) (1 for Tec 45, 2 for Tec 50) with regulator and SPG, with proper labels/markings.
  • Tec diving BCD(s) and harness (backmount or sidemount)
  • Two multigas enriched air capable dive computers, or one multigas enriched air computer and a back up single gas computer with dive tables, or one single gas enriched air computer and a backup timer and depth gauge with dive tables.
  • Exposure suit appropriate for environment and dive duration (if students will use dry suits, they should be trained/experienced in their use in recreational diving prior to using them for Tec training or diving).
  • Argon dry suit inflation system (as needed for environment)
  • Weight system (if needed). Note: Students and staff should weight for the contingency of decompressing with near-empty primary cylinders and empty or absent stage/deco cylinders.
  • Jon line (as needed for environment)
  • Inflatable signal tube, whistle and/or other visual and audible surface signaling devices. Note that a sausage type DSMB may double for the inflatable signal tube.
  • Reel and lift bag (bright yellow preferred) or DSMB. A suitable DSMB has sufficient buoyancy to help steady a diver during drifting decompression, and is unlikely to spill when deployed from the underwater.
  • Knife/cutting device and back up
  • Slate
  • Backup mask (optional)
  • Compass
  • Lights (optional-as required for dive environment)
  • Backup buoyancy control. The student must have a reliable means for controlling buoyancy and maintaining decompression stops in midwater with a failed primary BCD. This is usually accomplished with a backup BCD (double wings) or, when using light weight cylinders, the use of a dry suit is permitted. Note: A lift bag/DSMB is not considered a reliable method of backup buoyancy control.

For additional information, see the PADI TechRec Equipment Checklist.

Required Paperwork

Course Material

Tec 50 Knowledge Development Session 1

  • Study Assignment Session 1
  • Tec 50 Handout 1

Tec 50 Knowledge Development Session 2

  • Study Assignment Session 2
  • Tec 50 Handout 2

Practical Application

  • Tec 50 Practical Application 1
  • Tec 50 Practical Application 2
  • Tec 50 Practical Application 3

Training Dives

  • Tec 50 Training Dive 1
  • Tec 50 Training Dive 2
  • Tec 50 Training Dive 3
  • Tec 50 Training DIve 4

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