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GUE Master Diver (Rec3) course. Recreational diving with trimix and short decompression. Diving courses with Dive House Baltic, Gdansk.

GUE Master Diver (Recreational Trimix)

Diving up to 40m using trimix. Introduction to decompression diving.

In this training you will gain the knowledge and skills necessary to plan and perform dives to a maximum depth of 40 m with short decompression (up to 15 min). You will learn to solve basic failures and use trimix 21/35 as bottom gas and nitrox as decompression gas.

Course Duration

5 days

Number of dives

Minimum 8, including two trimix dives

Small groups

2-3 students

Configuration

Twinset + one deco cylinder

Gas mixes

Trimix 21/35 and Nitrox32

Standards

Check course standards: GUE Master Diver

Entry requirements

  • Age: minimum 18 years old
  • Health: generally good health and being a non-smoker
  • Certificate: GUE AOWD (Rec2) or GUE Basic Fundamentals
  • Experience:
    – Completion of at least 25 dives after completing the GUE AOWD (Rec2) or Basic Fundamentals
    course. Overall experience of at least 75 dives, including at least 15 drysuit and twinset dives.

Course price in Poland

4500 PLN

Course fee

+ 95 $

Registration fee:

certificate and access to the virtual learning platform

+ 1300-1500 PLN

Additionally:

Gas costs and dive logistics depending on the location

Course price abroad

1050 €

Course fee

+ 95 $

Registration fee:

certificate and access to the virtual learning platform

+ 500-700 €

Additionally:

Gas costs and dive logistics depending on the location

Interested in this course? Do you have any questions?

Learn more about the course GUE Master Diver (Recreational Trimix)

The GUE Master Diver (Rec3 – Recreational Trimix) training is an advanced recreational course designed for GUE divers who want to gradually develop their skills and expand their limits without having to enter the path of technical dives.

The course is designed to prepare you for safe dives to a depth of up to 40 m. During the class, you will learn the basics of planning and executing dives with short decompression (up to 15 minutes), using one decompression gas. Emergency procedures in various scenarios are also an important element of the training.

Limits:

  • Maximum depth: 40 m.
  • All dives take place in open water.
  • The planned decompression must not exceed 15 minutes. Planning is carried out using the GUE DecoPlanner software.

One of the advantages of completing the GUE Master Diver (Recreational Trimix) training is that it will make the transition to Technical Diver level 1 smooth and easier in the future. Procedures such as changing gas or responding to emergency situations will be an extension of what you will learn during the Master Diver training in the Tech1 course.

Each GUE course includes a swimming test. In this case, it is:

  • 275m swim in up to 14 minutes.
  • 15m underwater on a held inhalation.

The theoretical part of the course covers a wide range of topics: from the basics of planning trimix dives, through the theory of decompression, to the physiology of diving with the use of various breathing mixtures. The key issues we will deal with are:

  • Diving physiology: Effects of breathing gases depending on their composition and pressure
  • Gas management: the basics of reserve planning and conscious management of the amount of gas under water
  • Dive planning: decompression procedures, risk management, working with GUE Deco Planner software
  • Safety and emergency procedures: risk reduction, emergency management
  • Protecting the underwater environment: responsible diving and minimizing environmental impact and GUE projects

Practical classes focus on improving the skills necessary for safe and conscious diving to a depth of up to 40m. The practice includes exercises in controlled conditions – with increasing difficulty and at least two trimix dives. The key elements of the practical part are:

  • Perfecting the basics: position, buoyancy control and moving in a stage configuration
  • Solving simple failures: responding to automatic failures
  • Gas change procedure: one of the most important procedures in decompression diving
  • Decompression gas sharing: in case of failure
  • Implementation of diving plans in practice: Plan and perform at least two dives of about 40m with decompression lasting up to 15min
  • Improving communication and teamwork.
In many diving organizations, it is possible to obtain a license to dive 40 m in the air, with a single tank. Why does GUE recommend the use of trimix and decompression gases even in recreational diving?

GUE strives to provide divers with the highest possible level of awareness and safety. We train people who often participate in projects that require increased physical or mental effort underwater, so the priority is to optimize diving conditions.

According to the researchers’ recommendations, the ideal maximum gas density for comfortable breathing is 5.2 g/L, which corresponds to a nitrox of 32 per 30 m. Thicker gases can increase respiratory effort, which translates into a higher risk of fatigue and increased CO₂ levels.

In addition, the level of anesthesia increases significantly around 30m. High levels of anesthesia make it difficult to make decisions and can lead to an increased risk of panic in emergency situations.

Third: no-decompression limits and the amount of breathing agent strongly limit the time that typical recreational divers can spend at greater depths.

Therefore, at depths greater than 30 m, GUE recommends the use of trimix, twin-cylinder set and additional gases to accelerate decompression. This increases safety and allows us to explore the places of interest for longer.

I'm afraid that the equipment in the twinset + stage configuration is very heavy. Will I be able to cope?

It’s true that the extra gas makes the whole equipment heavier on the surface. Fortunately, in the water, all the weight disappears. If you are already diving in a twin, you know that it is quite easy to get used to its weight. During the training, you will attach the side cylinder to yourself in the water or on the boat, where you only have to take a few steps with it.

If you still have concerns, during this training you can use smaller (lighter) cylinders, such as the 2x10L + stage 7L set.

Where do the classes take place?

It largely depends on you. We train in various places in Poland and abroad. This training can be organized in the vicinity of the Tri-City with diving in the Baltic Sea or on one of the Polish lakes or quarries. We can also conduct this training in warmer waters – for example, in Croatia, Spain or Egypt. If you have your own idea for a diving destination that you want to combine with training, let us know – we will come up with something 🙂

Interested in this course? Do you have any questions?

What distinguishes GUE training?

Standardization of equipment and procedures
Standardization of equipment and procedures
A unified configuration and consistent procedures increase our security and efficiency.
Conscious Team Diving
Conscious Team Diving

Cooperation, communication and consistency of activities in the team are the foundation of the GUE philosophy.

Diving as a tool for exploration and environmental protection
Diving as a tool for exploration and environmental protection

wykorzystujemy nurkowanie do badań i działań na rzecz eksploracji, dokumentacji i ochrony środowiska podwodnego.

High precision and training discipline
High precision and training discipline

Stringent requirements ensure excellent stability, responsiveness, and situational awareness.

Standard gases from the beginning
Standard gases from the beginning

Nitrox 32 is introduced at the basic level and trimix is also available for recreational divers.

Elite instructors
Elite instructors

A selective process of recruiting instructors, requiring experience, extensive knowledge and intensive practice outside of training.

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