Interested in Technical Diving? The GUE Tech 1 course will introduce you to the skills required for it. You will finish the class prepared to dive a deco bottle, knowing how to conduct trimix diving to a maximum depth of 51m, and perform decompression.  This is a great step on from recreational diving, with exposures that still do not present a significant risk.

GUE’s Technical Diver Level 1 course defines the standard on the industry. It is thought-out to prepare divers for the challenges faced during technical diving. It unfolds gradually increasing the skill levels, allowing you to conduct safe and competent technical diving.


  Dive up to 51m 

  Perform up to 30 minutes of decompression


Tech 1 training focuses on:

  • Decompression Theory
  • Pragmatic decompression approach
  • Team Diving
  • Cultivating, integrating, and expanding the essential skills required for safe technical diving;
  • Problem identification, prioritization and resolution;
  • The use of double tanks and the potential failure problems associated with them;
  • The use of Nitrox or Oxygen for decompression;
  • The use of Helium gas mixes (Triox 30/30, Trimix 21/35 and 18/45);

In order to apply for your Tech 1 course you will have to:


  • Submit a completed registration form, a medical history, and a liability release to GUE Headquarters
  • Be physically and mentally fit
  • Hold insurance that will cover diving emergencies such as hyperbaric treatment, e.g. DAN Master-level insurance or equivalent
  • Be a nonsmoker
  • Obtain a physician’s prior written authorization for the use of prescription drugs, except for birth control, or for any prior medical condition that may pose a risk while diving
  • Be a minimum of 18 years of age
  • Have earned a GUE Fundamentals ‘Technical’ pass
  • Have a minimum of 100 logged dives beyond open water certification

GUE Tech 1 course is an intense but very rewarding class


It runs for at least 6 days, depending on the location, weather and logistics.

It has at least 9 dives and plenty of in-water time and the associated debriefs.

40 hours of academic and dry run work.

Generally class starts early and finishes around 18h.

Be flexible and enjoy one of the more rewarding courses available!!

The locations mentioned bellow are those I work more often due to the exceptional logistics, diving, and overall great experience.

If you wish to run a course somewhere else, it is always possible to be booked if the location meets the requirements for the training.


Krnica Dive centre is located in the beautiful Krnica’s village harbor, in Croatia. This GUE Instructor development centre  has great logistical support offered by very competent and friendly staff. From Krnica you can dive a number of impressive wrecks, generally in warm to temperate water and with great visibility. Maurizio Grbac is the owner, and he will make sure your stay is the best possible.


Islas Hormigas Club de buceo is located in Cabo de Palos, a village located in the south of Spain. Cabo de Palos has an incredible marine protected area, and the amount of life and huge groupers are well known by the diving community. From Islas Hormigas you can dive some great wrecks such as the SS Stanfield. The waters tend to be warm and with great visibility. The owners are very welcoming and helpful. 



Portofino Diver is located in Santa Margherita Ligure, close to Genova and beside Portofino, in Italy. The area offers an amazing selection of wrecks, crystal clear waters, and a vibrant marine park teeming with life. Probably the best service you’ll find in Europe, with a great boat, and Bruno, the owner, meticulously making sure your trip happens how you planned it.