TDI Advanced Nitrox ...and Decompression Procedures UE's Most popular TDI Course ever   This 2-course package is open to all divers who are experienced in advanced neutral buoyancy and controlled ascent techniques and want to utilise Oxygen up to 100% to learn how to plan and conduct stage decompression dives with accelerated deco to a depth of 45m. UE runs this package as a twin-set and side-slung stage cylinder course to a maximum END of 30m.   The most common equipment requirements, gear set-up, and decompression techniques are presented. It comprises of the full curriculum and skills of the TDI Advanced Nitrox  and the TDI Decompression Procedures courses that are run simultaneously.   The course is normally run in relaxed manner over 4 days. 6 training dives are required.   The course fee includes all Instructor expenses, TDI Advanced Nitrox & Decompression Manuals and TDI certification fees. If extra training dives are required a separate fee will be charged. Boat fees and gas fills are not included.   To enrol or get any further information call us or send us an email.   Together with TDI Decompression Procedures course the candidate would meet the pre-requisites for TDI Trimix course.   Candidate Pre-Requisites: Minimum age of 18 Minimum certification level of basic nitrox from any agency Proof of 25 logged open water dives Underwater Explorers also requires candidates to be familiar with the equipment they will be using during the course. For those who wish to the course in twin-sets but have never used one … start from Intro-to-Twins. Equipment Requirements:

ALL TDI COURSES Candidate Pre-Requisites  Equipment Requirements  Graduation Requirements Course Schedule Course Price List

• Primary orange SMB & back-up yellow SMB

• Primary reel (over 50m of line) & back-up reel/spool

• Cutting tool

• Primary and back-up torch

• 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:

• Demonstrate ability to share back gas with buddy as both recipient and donor in mid-water

• Demonstrate correct body position (appropriate trim, such as horizontal / streamlined).

• Demonstrate correct stress analysis with self and team members.

• Calculate and log CNS loading for each dive including cumulative exposure where appropriate

• Demonstrate correct use of oxygen analyzer including optimal procedure for calibration.

• Demonstrate understanding of gas labelling.

• Demonstrate adherence to conventions regarding prep equipment for oxygen service

• Demonstrate ability to manage freeflow from primary regulator in controlled.

• Deploy SMB correctly while maintaining position in mid-water.

• 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.

• Satisfactorily complete the TDI Advanced Nitrox Course written examination.

• Complete all open water requirements safely and efficiently.

• Demonstrate mature, sound judgment concerning dive planning and execution.