Our Most Popular Course in conjunction with TDI Advanced Nitrox Course
The objective of this course is to train divers how to plan and conduct a standard staged decompression dive not exceeding a maximum depth of 45m. The most common equipment requirements, gear set-up, and decompression techniques are presented. Students are permitted to utilize Enriched Air Nitrox mixes or oxygen for decompression provided the gas mix is within their current certification level.
The course is normally run over 3 days. Minimum of 4 training dives are required.
Together with TDI Advanced Nitrox course the candidate would meet the pre-requisites for TDI Trimix course.
The course fee includes all Instructor expenses, TDI Decompression Procedures Manual and TDI certification fees. In case extra training dives are required there will be a separate charge. Boat fees and gas fills are not included.
Candidate Pre-Requisites:
- Minimum age of 18
- Minimum certification of Open Water Diver
- Proof of 25 logged open water dives
Underwater Explorers also requires candidates to be basic nitrox divers and be familiar with the equipment they will be using during the course. For those who are not familiar with twin-sets … look at the Intro-to-Twins programme.
Equipment Requirements:
- SMB & Reel (over 50m of line) and cutting tool
- Underwater slate or notepad
- O2 clean Twin set as a primary cylinders.
- O2 clean Stage cylinder for decompression mix
- Depth gauge and automatic bottom timer or dive computer
- Regulators (primary and alternate 2nd stage required on all primary cylinders)
- SPGs for primary and stage cylinders
- Buoyancy Compensator(s) adequate for equipment configuration.
- Jon-line and other rigging lines as dictated by site conditions.
- Exposure suit adequate for the open water environment – dry suit
Underwater Explorers is able to provide some of the required equipment for the duration of course free of charge (subject to availability).
Graduation Requirements:
- Complete a horizontal breath hold swim at depth for 15 meters.
- Demonstrate tired diver tow at depth and on the surface.
- Demonstrate ability to hover at fixed position in mid-water without moving hands or feet
- Buddy breathing deco gas for at least one minute.
- Demonstrate familiarity with basic hand signals.
- Select and prepare of equipment suitable for soft overhead environment
- Conduct team oriented drills for SMB deployment and gas switching procedure.
- Show good awareness of team members through communications, proximity and team oriented practices.
- Demonstrate comfort swimming on surface and at depth carrying decompression stage bottle.
- Demonstrate ability to drop and retrieve decompression cylinder while maintaining position in the water.
- Demonstrate ability to deploy a SMB solo and as a member of team.
- Demonstrate controlled/ staged ascent on SMB / emergency ascent line.
- Remove and replace mask (deploy backup mask)
- Demonstrate appropriate reaction to catastrophic gas loss.
- React correctly to BC inflator malfunction.
- Demonstrate ability to confirm gas switch(es) at depth with team member.
- Switch to back-up mask
- Demonstrate appropriate reaction to free-flowing deco regulator.
- Demonstrate appropriate modifications to deco schedule in decompression emergency.
- Satisfactorily complete the TDI Decompression Procedures Course written examination.
- Complete all open water requirements safely and efficiently.
- Demonstrate mature, sound judgment concerning dive planning and execution.