Decompression Procedure Course

Are you finding your no- decompression limits (NDLs) a limiting factor to dives? Do you have to ascend sooner than you would like? 

During your Decompression procedures course, you will learn how to safely use all equipment needed to execute a dive once you have exceeded your no-decompression limit.
All courses that are taught through Sam Bennett Diving have a ratio of 4:1 (students to instructor)
    • Minimum age 18
    • Minimum certification of SDI Advanced Adventure Diver, Advanced Diver, or equivalent
    • Proof of 25 logged open water dives


    What you get out of this course:
    • Ability to conduct decompression diving activities without direct supervision provided:
      – The diving activities approximate those of training
      – The areas of activities approximate those of training
      – Environmental conditions approximate those of training
    • Ability to enrol in TDI Advanced Nitrox, TDI Extended Range, TDI Advanced Wreck, TDI Trimix courses


    equipment, site entry fees, boat fees (if required), gas fees are not included

    Course Requirements:



    – Complete all E-learning Modules before any practical lessons start.
    – Dive planning and dive organisation session. This will be completed either in person or through our online classroom.

    Land Skills

    • 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
      a. Limits based on personal and team gas consumption
      b. Exact dive and decompression profile

    IN-water skills

    • Demonstrate buoyancy control; ability to hover at a 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 the surface and at depth carrying single decompression stage cylinder
    • Demonstrate the ability to drop and retrieve a single decompression cylinder while maintaining position in the water column
    • Demonstrate the ability to deploy a lift bag solo and as member of the team
    • Demonstrate controlled/staged ascent on lift bag/emergency ascent line (lost ascent line)
    • Remove and replace mask (deploy backup mask)
    • Demonstrate appropriate reaction to gas haemorrhage 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 the ability to confirm a 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 (overtime, over depth) (to be simulated)
    • Demonstrate tired diver tow at depth and on the surface, 30 metres / 100 feet lateral each
    • Complete a horizontal breath-hold swim at depth for 15 metres / 45 feet
    • Properly execute the planned dive within all pre-determined limits
      • a. Assembly of diver carried equipment
      • b. Proper descent/ascent rates
      • c. Proper staged stop procedures
      • d. Monitoring of decompression status equipment; tables, computers, equipment
    • Contingency situations and problem-solving, as appropriate by the instructor
      • i. Omitted decompression.
      • ii. Extended bottom time profiles with increased decompression and recalculated schedules
      • iii. Failure to deploy lift bag and reel iv. Missed up-line or missed boat anchor v. Loss of decompression gas
    • A safety stop of at least 3 minutes shall be conducted on all no-decompression dives and properly 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, including but not limited to:
      • a. Conservative gas management
      • b. Depth control to avoid descending too deep for a mix
      • c. Show appropriate and timely responses to instruction/signals from the instructor and demonstrate buoyancy control and awareness throughout the dive