Safely Dive to 60 Metres with Trimix — Control Narcosis and Dive with Clarity

The IANTD Normoxic Trimix Diver course is designed to train divers who want to explore depths between 40 and 60 metres using open circuit equipment and Trimix breathing gases.

The course focuses on the use of normoxic Trimix blends, which help reduce narcosis or keep it within safe and controlled limits, making deep dives safer and clearer.

If you want to avoid the narcotic effects of breathing compressed air below 40 metres, this is the right course for you.

Course Overview

The IANTD Normoxic Trimix Diver course prepares you to dive safely using Trimix mixtures down to a maximum depth of 60 metres.

Why Use Trimix?

Trimix blends replace part of the nitrogen with helium, a gas that produces much less narcosis than nitrogen. The advantages of diving with Trimix include:

  • Reduced narcosis, maintaining clarity and control at depth
  • Safer and more comfortable dives between 40 and 60 metres
  • Expanded knowledge of deep diving and gas management

Topics Covered in the Course

  • History of mixed gas diving
  • Physics and physiology of deep diving with Trimix
  • Equipment configuration for Trimix diving
  • Dive planning and use of dive tables
  • Gas analysis and safe handling of Trimix mixtures
  • Calculation of repetitive dives

Practical Training

During practical sessions, you will learn:

  • Safe handling and analysis of Trimix blends
  • Confined water training to practice skills
  • Three (3) open water dives using Trimix mixtures with a maximum of 30% helium (He) and a minimum of 20% oxygen (O₂), to a maximum depth of 60 metres

Course Prerequisites

To enrol in the IANTD Normoxic Trimix Diver course, you must:

  • Hold an IANTD Advanced EANx Diver certification or an equivalent certification
  • Be at least 18 years old

Course Materials

During the course, it is mandatory to use the official IANTD Normoxic Trimix Diver manual, including:

  • Dive tables for Trimix diving
  • Analysis stickers for gas identification

All dives must be recorded in an official logbook and signed by the instructor.

Course Duration and Structure

Theory Lessons:

  • Five (5) academic sessions following the official manual

Confined Water Session:

  • One session to develop and practice technical skills

Open Water Dives:

  • Three (3) dives with Trimix mixtures (max 30% He, min 20% O₂)
  • Maximum depth: 60 metres

Earn Your IANTD Normoxic Trimix Diver Certification

At the end of the course, successful candidates will receive the IANTD Normoxic Trimix Diver certification, recognised internationally by the International Association of Nitrox and Technical Divers (IANTD).

Get Started — Contact Us Today

For more information or to enrol in the IANTD Normoxic Trimix Diver course write to us at: cecilia@dgportofino.com

Dive deeper, dive safer — with Diving Group Portofino and IANTD!