PADI Tec 45

PADI · TEC 45 COURSE

PADI Tec 45

Push deeper. Dive longer.

Full Decompression Diving Oxygen Deco to 100% From $1,495

Deeper, longer, and in control the whole way back up.

Course Overview

Tec 45 is an 18-hour, three-day program that builds on your Tec 40 foundation and takes your technical diving to the next level. You will plan and execute full decompression dives to 45 metres using a twin-cylinder backmount, sidemount or doubles configuration with a single deco cylinder carrying up to 100% oxygen, manage repetitive decompression profiles, and refine the team protocols and gas discipline required for deeper technical diving.

The program includes confined water training and open water dives including trimix boat dives, giving you real-world tec experience at greater depth. This course is taught to full PADI TecRec Tec 45 standards by a certified PADI Tec Instructor, with a maximum student-to-instructor ratio of 3:1.

Course Specifications

  • Max depth: 45 m / 148 ft
  • Gases: Air or Trimix (O₂ ≥ 21% / He ≤ 35%) — deco gas up to 100% O₂
  • Decompression: Full decompression — repetitive dives allowed
  • Equipment: Sidemount / Doubles (manifold required). 1 deco cylinder (up to 100% O₂). Redundant gas supply required.
  • Key skills: Repetitive deco dives, oxygen use and planning, failure management, team awareness, problem solving

Certification Pathway

After successful completion of your Tec 45 training, we can discuss your next steps within the PADI TecRec pathway, including:

  • Tec 50 — multi-gas and extended deco
  • Tec Sidemount Diver
  • Tec Trimix 65 / Tec Trimix Diver

Day 1

WORKSHOP + CONFINED WATER

Course presentation on advanced deco theory, oxygen planning, repetitive dive management, gas planning and equipment standards. Equipment configuration workshop covering doubles or sidemount setup, manifold operation, deco cylinder rigging, long-hose primary and valve shutdown drills. Dry-skills practice: full shutdown procedures, out-of-gas protocols, gas switch drills and problem-solving scenarios. Dive 1 — Confined water / shallow open water: 10m.

Day 2

SHORE DIVE — SKILLS DEVELOPMENT

Dive planning briefing covering repetitive deco planning, oxygen exposure management and turn pressures. Dive 2 — Shore dive with tec skills refinement, propulsion, buoyancy and trim at depth: 15–30m. Debrief and gas planning workshop for Day 3's trimix and deco dives.

Day 3

BOAT DIVES — TRIMIX + FULL DECOMPRESSION

Dive 3 — Planned full deco dive with a gas switch to your deco cylinder and DSMB mid-water deployment (Boat / 21/35 Trimix): 24–45m. Dive 4 — Final evaluation dive with full skill integration, independent gas planning and deco execution (Boat / 21/35 Trimix): 30–45m. Final debrief, skill sign-offs and PADI Tec 45 certification issued.

Times and conditions may vary. Your instructor will confirm all timings before each day.

Continue your PADI TecRec pathway — Tec 50, Tec Sidemount Diver, or Tec Trimix await. Get in touch to plan your next step.

Choose your date

Equipment

Equipment

  • Backplate and wing (doubles) or sidemount harness
  • DIN regulators × 2 (long-hose primary + necklaced backup)
  • Manifold (required for doubles configuration)
  • Two independent multi-gas dive computers (second can be a bottom timer)
  • Drysuit (preferably) or 7 mm wetsuit
  • Open-heel fins with spring straps
  • 2x masks (1 backup)
  • 2 torches (1 backup)
  • 2 DSMB and spool or reel (1 backup)
  • 2x cutting devices
  • Wet-notes
  • 2x double ender boltsnaps
  • Diving decompression software and personal dive log

Included: twin cylinders, deco cylinder (up to 100% O₂), weights, and 21/35 trimix for Dives 3 and 4. Equipment hire may be available — contact Dive Centre Bondi in advance to confirm. As a Dive Centre Bondi student, you also receive 10% discount on all in-store purchases.

Gear We Recommend

Sea Gold

Sea Gold

$19.95
Halcyon Stainless Steel Double Ender

Halcyon Stainless Steel Double Ender

$35.00
Sea Buff

Sea Buff

$14.95
Scubapro Octopus Retainer Mouthpiece Plug with Clip

Scubapro Octopus Retainer Mouthpiece Plug with Clip

$29.48
Crystal Lube O2 Syringe 28g / 1 Oz

Crystal Lube O2 Syringe 28g / 1 Oz

$89.00
Oceanpro Mouthpiece Ortho

Oceanpro Mouthpiece Ortho

$14.95
Oceanpro DIN Dust Cap ABS Male

Oceanpro DIN Dust Cap ABS Male

$9.95
Wetsuit Hanger

Wetsuit Hanger

$12.95
Snorkel Keeper Silicone

Snorkel Keeper Silicone

$3.50
Gear Aid Revivex BCD cleaner 296ml

Gear Aid Revivex BCD cleaner 296ml

$22.95
Oceanpro Air Nozzle

Oceanpro Air Nozzle

$37.95
Oceanpro DIN Dust Cap ABS Female

Oceanpro DIN Dust Cap ABS Female

$9.95

Prerequisites

  • Minimum 18 years of age
  • PADI Advanced Open Water Diver (or equivalent)
  • PADI Enriched Air Diver / Nitrox certification
  • PADI Deep Diver specialty (or equivalent)
  • PADI Sidemount Diver — OR — Tec Basic certified in doubles configuration
  • PADI Tec 40 Diver (or equivalent)
  • Good general health and fitness for diving

Not sure if you meet the prerequisites? Contact us at Dive Centre Bondi — we can help you find the right pathway to get Tec 45 ready.

Interested in a Private Course?

View all our private courses »

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Frequently Asked Questions

Find quick answers to the most common questions about our courses, scheduling, prerequisites, and gear.

What's the difference between Tec 45 and Tec 40?
Tec 40 is limited deco to 40m with a max 50% O₂ deco gas. Tec 45 extends that to full, repetitive decompression at 45m with a deco cylinder carrying up to 100% oxygen.
Do I need my own technical equipment?
Yes — you'll need your own tec-configured equipment (see Equipment Requirements below). Twin cylinders, your deco cylinder, weights and trimix for Dives 3–4 are included. Equipment hire may be available if you contact us in advance.
What's the maximum class size?
A maximum of 3 students per instructor.
Can I book a private course instead?
Yes — private training is available for $3,500. Get in touch and we'll arrange dates around you.
What if I need to reschedule?
Rescheduling is free as long as it's more than 7 days before your course starts. Inside 7 days there's a $100 transfer fee — by that point we've already committed your instructor, your equipment and the logistics for those dates.
What comes after Tec 45?
Tec 50, Tec Sidemount Diver, and Tec Trimix 65 / Tec Trimix Diver — we'll talk through the right next step once you're certified.

Interested in a Private Course?

View all our private courses »