Tec 40 Diver

PADI Tec 40 course introduces divers to limited decompression diving within accepted recreational depth limits. Although the student who clearly intends to continue through Tec 50 is encouraged to complete Tec 40 in complete tec diving gear, the limits of the Tec 40 qualification allow more flexibility. Therefore, to accommodate divers interested in very limited tec diving, the Tec 40 equipment requirements are only a bit beyond those of the standard recreational kit.

  • Certification as PADI Advanced Open Water (or equivalent)
  • Minimum age of 18 years old
  • Certification as PADI Enriched Air Diver (or equivalent)
  • Certification as PADI Deep Diver (or equivalent)
  • Have a minimum of 50 logged dives, of which at least
    • 10 dives must be on enriched air
    • 12 dives must be deeper than 18 metres/60 feet
    • 6 dives must be deeper than 30 metres/100 feet
  • Have a medical form signed by your physician
Equipment Required: 
  • Two first and second stage regulators with SPG for configured for sidemount
    • One with a seven foot hose for air sharing
  • One deco regulator, SPG & staging kit – properly labeled
  • Approved sidemount harness (dual bladder or dual wings unless drysuit diving)
  • Dive computer (single or multi-gas), and either back-up computer or timer & depth gauge
  • Back-up decompression information (computer, dive tables, etc.)
  • Exposure protection (dry suit use requires prior dry suit diving experience)
  • Weight system (if needed)
  • Lights as necessary, including primary and backup
  • Jon line (for current diving environments)
  • Safety spool or reel (150ft)
  • Two Slates (1 wrist-type)
  • Compass
  • Z-knife and back-up cutting device
  • Spare clips, pull-ties, tank wrap bands & other rigging accessories
  • Back-up mask
  • Lift bag (100lbs min)
Equipment Provided: 
  • Two primary cylinders at least 80cuft rigged for sidemount
  • One deco cylinder
  • Weights
  • Laptop, tablet or other device with decompression software
  • Oxygen analyzer
  • Emergency Oxygen & first aid kit
  • Contents labels
  • Forms & support materials
Course Structure: 

The Tec 40 course consists of knowledge development, three practical application sessions, one confined or limited open water dive, two open water no stop dives (simulated decompression) and one open water decompression dive.

  • Dive 1: 0-30fsw
  • Dive 2: 30-60fsw
  • Dive 3: 50-90fsw
  • Dive 4: 85-130fsw
Certification Limits: 
  • Use decompression software and dive computers to plan and make decompression dives with not more than 10 minutes of total decompression and not deeper than 40 metres/130 feet.
  • Use a single cylinder of decompression gas with up to 50 percent oxygen (EANx50) to add conservatism to the required decompression.