TDI Advanced Wreck Diver
Penetrate wrecks beyond the light zone, manage overhead environments, and execute advanced wreck dives with precision and discipline
Duration
4 days, 6 dives
Max Depth
55m / 180ft (or diver’s cert limit, whichever is shallower)
Level
Technical (Advanced Overhead Environment)
Next Step
TDI Full Cave Diver / Expedition Wreck Diving
Overview
The TDI Advanced Wreck Diver course trains divers to conduct advanced wreck penetration dives, including operations beyond the light zone in true overhead environments.
Unlike recreational wreck diving, this programme focuses on full penetration procedures, guideline protocols, gas management, restricted exits, and emergency problem-solving inside complex wreck structures.
Training develops the ability to operate safely in environments where:
- Direct ascent is impossible
- Visibility may rapidly deteriorate
- Navigation and team discipline are critical
At N9BO℠, this course is delivered as high-discipline overhead environment training, combining precise buoyancy control, propulsion techniques, guideline management, and emergency response under task loading.
Course Facts
- Course name: TDI Advanced Wreck Diver
- Level: Technical overhead environment diver
- Minimum prerequisites: Minimum age 18, SDI Advanced Adventure Diver (or equivalent), SDI Wreck Diver or TDI Cavern Diver (or equivalent), Minimum 50 logged dives
- Ratio: Maximum of 4 students per instructor (small groups recommended for quality training)
- Configuration: Technical wreck configuration with redundant gas supply, primary and backup lights, reels/spools, and guideline equipment
- Depth / environment: Maximum depth 100m / 330ft, All mixed gas dives conducted deeper than 40m / 130ft, Multiple deep decompression dives required
- Format: Academic development + land drills + wreck penetration dives
- Duration: Typically completed in 4 days (Minimum 6 open water dives with at least 100 minutes accumulated bottom time)
What You’ll Learn
- Plan and execute advanced wreck penetration dives.
- Deploy and manage primary reels, safety spools, jump and gap lines.
- Apply rule of thirds gas management.
- Navigate in low visibility, zero visibility, restricted environments.
- Conduct lost line drills, lost diver drills, entanglement procedures.
Prerequisites
- Be at least 18 years old.
- Have a minimum of 50 logged dives.
- Hold SDI Advanced Adventure Diver (or equivalent).
- Hold SDI Wreck Diver or TDI Cavern Diver (or equivalent).
- Be medically fit for technical diving.
FAQ
This course involves:
- Full penetration beyond the light zone
- Overhead environment procedures
- Guideline-based navigation
- Advanced emergency protocols
Depth may not exceed:
- Or 55 metres / 180 feet, whichever is shallower.
- Your existing certification level
You will learn:
- Advanced guideline procedures
- Zero visibility exits
- Gas management for overhead environments
- Team positioning and communication
- Entanglement and contingency procedures
Technical wreck diving equipment typically includes:
- Redundant gas supply
- Primary and backup lights
- Primary reel and safety spool
- Cutting devices
- Technical buoyancy configuration
You are qualified to conduct advanced wreck penetration dives within overhead environments, using guideline procedures, redundant systems, and technical gas management within your training limits.
Ready to Enter Advanced Overhead Environments?
Send us your certifications and dive experience. We’ll train you to conduct wreck penetration dives with precision, discipline, and operational control.
Go Pro with TDI Advanced Wreck Instructor
Advance into overhead environment instruction and train divers in advanced wreck penetration procedures, guideline management, and emergency protocols within complex wreck systems.
