Cours OC

STDA proposes 'Open Circuit' courses with 3 recreational levels and 3 for decompression diving. For divers that come from oher agencies that want to go on with advanced diving and don't know the hogartian configuration and the DIR approach the first course is the 'Intro to Tech-Fundamentals'.20180101 Flowchart corsi OC manuali

For all the courses it's possible to attend the theory sessions through the web. In this way you can use your time at the best. Same thing if you want to come in Italy to attend your courses. You can do the theory lessons before your coming. Contact us at:

  • R1 - Open Water Diver
  • R2 - Advanced Open Water Diver
  • R2 Deep - (includes the Rescue Module)
  • EANx Diver - (R1 & R2 course sections)
  • Intro to Tech-Fundamentals
  • T 1 - Trimix Decompression 50 mts
  • T 2 - Trimix decompression 60 mts
  • T 3 - Trimix Decompression 80 mts

The 16th of July will start a CCR2 course that aims to enhance the limits of CCR1 certification. The program will develop through theory , dry-lab and shallow water sessions and will finish with...
The 26th of July will start an 'Intro to Reb-Adv' course. The program aims to introduce the already certified scuba diver to the use of rebreather. The course provides theory, dry lab and confined...
The 26th /28th July will take a place an XCCR rebreather x-over. Location: lake Garda -Italy Instructor: Marco Valenti XCCR Instr. Trainer The rebreather can be rent for the course For info: ...
13/09/2019-15/09/2019 STDA HQ - Lake Garda Italy, 2019 monthly - X-CCR rebreather x-over Workshop

19/07/2019-19/07/2019 Trento - Piscina Fogazzaro, OC Trial dive, registration - Immersione di prova per principanti in circuito aperto, registrazione

26/07/2019-31/08/2019 STDA HQ - Lake Garda Italy, Intro to Rebreather-Advanced

16/07/2019-01/09/2019 STDA HQ - Lake Garda Italy, CCR 2

02/09/2019-29/09/2019 STDA HQ - Lake Garda Italy, Recreational Instructor Course

06/09/2019-29/09/2019 STDA HQ - Lake Garda Italy, Recreational Instructor Course X-OVER

04/10/2019-27/10/2019 STDA HQ - Lake Garda Italy, Recreational Instructor Course X-OVER

26/07/2019-28/07/2019 STDA HQ - Lake Garda Italy, 2019 monthly - X-CCR rebreather x-over Workshop

23/08/2019-25/08/2019 STDA HQ - Lake Garda Italy, 2019 monthly - X-CCR rebreather x-over Workshop

T2 – decompression Tri-mix 60 meters course (STDA™)


The 'T 2' course aims to complete the training started with the 'T 1' expanding the theoretical and practical knowledge and experience, to dive at a maximum depth of 60 meters, using Tri-mix and multiple decompression mixtures. The program extends the limit of the 'T 1' certification with an increase in the levels required for the exercises and diving procedures.


  • be certified 'T 1' or equivalent
  • medical certificate not older than one year; recommended PFO examination (Patent foramen ovale); non smoker
  • minimum age: 20 years old
  • documented experience of at least 75 dives, 20 with decompression

Before the course start, the instructor could ask to do a open circuit dive to evaluate the level of training of the candidate.

Program and duration of the course with 3 students

minimum days: 6
theory: minimum 12 hours
Theory sessions: 6 - ratio instr/student: 1/4
Final assessment: quizzes with multiple choice
Maximum percentage of allowed wrong answer: 20%

Exceeding the maximum allowable percentage leads  to the repetition of the quiz not before than 2 days

Confined water sessions: minimum 2 - ratio instr/student: 1/4

Open water dives: minimum 4 with a cumulated run time of minimum 280 minutes - ratio instr/student: 1/2

The maximum time for completion of the course: 6 months that if exceeded, the course must be repeated entirely

Certification limits

  • Max depth: 60 meters with mandatory tanks with adequate mixtures and volumes (liters of the mix)
  • Max pO2, Allowed for bottom mix: 1,2 ata
  • Max pO2, in decompression: 1,6 ata
  • Allowed bottom mixes: Tri-Mix - Max fHe 0,55 - 0,15≤ fO2≤ 0,18
  • Allowed decompression mixes: EANx - Max fO2 0,50 , Oxygen
  • For all the mixes fO2 range: +/-0,01


1200€ for training (manual + theory in classroom/web on-line, quiz, cw sessions and dives)

NOT included: mix, , instructor 'room and board' for other locations, boats if needed and extra days for training or delays due to adverse weather conditions.

Extra training day cost: 200€/day

In case of 2 or more students and x-over, please contact the instructor for a quotation.



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Via delle Ghiaie, 22
38122 Trento (TN) - Italy
t. +39 347 5041939
P.IVA IT 02127010227
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