TDI Advanced Sidemount Diver


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TDI – Advanced Sidemount Diver Course 

This course focuses on advanced sidemount diving techniques, applicable in overhead environment or extreme conditions where the use of back-mounted cylinders is not an option. 

As such, the TDI Advanced Sidemount Diver course is approached as a generic specialty, applicable to overhead and non-overhead environments and can be combined with decompression techniques, mixed gas, CCR or back-mounted twin cylinders to offer a more streamlined configuration. The course requires the deployment of multiple stage cylinders, depending on the mixes/ volumes required. Course depth, gas mixes used or length of penetration depend on the students’ current certification level at the time of enrolment. This course may be combined with other TDI Diver level courses. 

Qualifications of Graduates 

Upon successful completion of this course, graduates may engage in multiple stage cylinders diving activities without direct supervision so long as the limits of their other diving certifications as detailed by the certifying agency are adhered to. For example; use of mixed gas, overhead environments, decompression diving, CCR, etc. 

Student Prerequisites

  • Minimum age 18
  • Provide proof of TDI Sidemount Diver certification or equivelent
  • Provide proof of at least 100 logged dives or hours, a minimum of 25 must be sidemount dives and;
  • Be appropriatly certifide to dive the conditions in which the course is being conducted or;
  • Meet all prerequisites For any course being taught in conjunction with TDI Advanced Sidemount Course

What you can expect to learn:

  • Policy for Sidemount Diving 
  • Psychological Considerations 
    1. Task loading
    2.  Narcosis management 
    3. Zero visibility conditions
  • Equipment Considerations
    1. Stage cylinder options 
    2. Stage rigging configuration
    3. Sidemount Harnesses
    4. D-ring placement, stage clipping 
    5. Reel vs. spool options 
    6. Proper weighting for trim 
    7. Regulator configurations 
    8. Long hose routings 
    9. Butt pouch vs. pockets 
    10. Torch attachment points 
  • Communication 
    1. Hand signals 
    2. Light signals 
    3. Touch contact signal
  • Swimming Techniques
    1. Body posture/ Trim
    2. . Buoyancy control and weighting
    3. Line following and position
    4. Propulsion technique
    5. Team position 
  • Physiology 
    1. Breathing techniques 
    2. Stress management 
  • Tight spaces / Restrictions
    1. Limits on number of restrictions
    2. Pre/post restrictions checks
    3. Passing equipment 
    4. A-framing and back-outs 
  • Problem Solving 
    1. Emergency procedures
    2. Equipment failure 
    3. Critical skills in “zero visibility
  • Gas Management and Switching


  • ELearning
  • Air Fills
  • Certification Card
  • Our hire equipment is included but is limited it is highly recommended that as a technical diver, you are intimately familiar with your dive gear, and as such it is recommended that you own your own gear for this course. Please feel free to contact us prior to making any purchases, our tech instructors are always willing to offer their time and advice when it comes to gear selection. They have dived with and used a number of different brands and configurations, and will be able to provide you with detailed recommendations.


Day 1 - Dive Planning, Gear Configuration Dives 1&2

Day 2 - Dive Planning, Dives 3&4

Day 3 - Dive Planning, Dives 5&6