TDI Advanced Nitrox & Decompression Procedures Diver

Start Your Real Technical Diving Journey

The combined Advanced Nitrox and Decompression Procedures (ANDP) course is a pivotal step into the realm of Technical Diving, forming the foundation for all subsequent technical training
programs.

This comprehensive course is designed to provide divers with a thorough understanding of the theory, methods, and procedures essential for planned stage decompression diving.

The primary objective is to equip divers with the skills and knowledge required to plan and execute standard staged decompression dives to a maximum depth of 45 meters (150 feet).

In addition to decompression diving techniques, this course covers the use of EAN-21 through 100 percent oxygen for optimal gas mixes.

Divers will be educated on the benefits, risks, and proper
procedures for utilising these Nitrox gas mixes in dives requiring staged decompression.

The training encompasses essential aspects such as equipment requirements, setup, and decompression
planning and techniques.

By the end of the course, divers will be proficient in using enriched air nitrox (EAN) mixes up to and including oxygen to facilitate decompression diving and enhance overall safety.

This comprehensive training ensures that divers are well-prepared to manage the complexities of decompression diving with heightened safety and efficiency.

Who This Course Is For ?

This course is perfect for you if :

You are an advanced diver who wants to learn real decompression theory
You feel limited by no-decompression time
You want to stay longer at depth
You plan to move into Trimix, Extended Range, or technical wreck diving
You want better planning skills, safety skills, and control
You are serious about becoming a technical diver

If you want to move beyond recreational limits and dive with purpose, this course is for you.

Course Prerequisites

To start this course, you must :

These requirements make sure you are ready for decompression training.

What You Will Learn

Understanding Decompression Diving

This course teaches decompression in a step-by-step and easy way.

You learn :

Decompression theory and how the body reacts to pressure
How decompression stops work
How to plan simple and multi-level decompression dives
How to use tables and dive computers safely
How to select the right decompression gas
Oxygen exposure limits and gas switching rules
How to plan ascents and manage time at depth

Gas Planning And Equipment Knowledge

You learn how to :

Choose the correct gases for depth and decompression
Analyze and label cylinders correctly
Understand oxygen limits and nitrogen exposure
Set up technical equipment the right way
Prepare backup gas and emergency supplies

Emergency And Safety Training

You train for real problems such as :

Equipment failure
Regulator free flow
Gas loss or wrong gas
Buddy running out of gas
Missed or delayed decompression
Lost line or poor visibility
Stress and task overload

You learn how to stay calm and solve problems underwater.

Skills You Practice in Water

During open-water dives, you practice :

Proper equipment setup and pre-dive checks
Perfect buoyancy and trim
Holding stops without moving up or down
Gas switching with control and awareness
SMB or lift bag deployment in mid-water
Team communication and positioning
Advanced finning to avoid disturbing sediment

You will gain a technical understanding of how to manage gas, ascent strategies, decompression protocols, equipment and risk reduction factors.

Emergency Skills You Practice

You also train for :

These skills make every ascent safe and controlled.

What’s In It For You ?

After completing this course, you can :

Plan and execute decompression dives on your own
Dive safely to 45 meters / 150 feet
Manage decompression gases with confidence
Control ascent speed and stop depth precisely
Dive with discipline like a technical diver

Progress to Higher Technical Courses

This certification allows you to move forward to :

This course opens the door to deep exploration and advanced diving.

Certification Requirements

To earn your TDI Decompression Procedures certification, you must :

At Blue Water Ascent, divers do not just pass – They graduate with confidence and control.

Frequently Asked Questions

Can I take this course without Advanced Nitrox?

Yes. Many divers take them together, but it is not mandatory.

Will I do real decompression stops?

Yes. You perform actual decompression using correct gases and schedules.

Can I dive deeper than 45 meters after this course?

No. Deeper diving requires Extended Range or Trimix training.

Do I need special equipment?

Yes. This includes extra cylinders, reels, SMBs, and technical gear. We help you set everything up correctly.

Is decompression diving dangerous?

With proper training and planning, it is controlled and safe. This course teaches risk awareness and problem management.

Push the Limits Safely

When you move from recreational diving to technical diving, there is no turning back. Decompression diving is the first true step.

The TDI Decompression Procedures course at Blue Water Ascent gives you the knowledge, skills, and confidence to dive deeper, stay longer, and ascend safely.