As a SDI Assistant Instructor, you not only gain additional experience as a SDI Professional scuba diver, but you also start learning the SDI System of diver education. You can act as an instructional scuba assistant and assume limited teaching responsibilities. It’s a great way to gain experience in order to become a scuba instructor!

The SDI Assistant Instructor course is the first portion of the SDI Instructor Development Course (IDC) and when followed by the Open Water Scuba Instructor course (OWSI) and successful performance at the Instructor Examination (IE), leads to certification as a SDI Open Water Scuba Instructor.

What You Learn

You build upon your abilities to organize and supervise scuba diving activities, while concentrating on developing teaching skills. You learn through:

  • Knowledge development through self-study, quizzes, lectures and presentations
  • Confined water skill review and assessment, workshops and presentations
  • Open water workshops, rescue assessment and candidate presentations

What You Can Teach

In addition to the responsibilities and duties you already have as a SDI Divemaster, as a

SDI Assistant Instructor you can:

  • Teach academic presentations under the indirect supervision of a SDI Instructor
  • During confined water dives, present initial skills training under the direct supervision of a SDI Instructor
  • Evaluate Open Water Diver surface skills under the indirect supervision of a SDI Instructor
  • Teach and certify SDI Advanced Buoyancy Specialty Divers under the direction of a SDI Instructor
  • Conduct SDI Scuba Discovery experiences in a pool or confined water
  • Teach SDI Underwater Photographer specialty courses under the direction of a SDI Instructor after earning the SDI Underwater Photographer Specialty Instructor rating

The Scuba Gear You Use

You use all the basic scuba equipment and some scuba accessories such as a dive slate, dive knife, compass, dive watch, etc. It is highly recommended that you own all of your own scuba equipment, as familiarity with personal gear improves general scuba diving skills. You can find most everything at All About Scuba.

The Learning Materials You Need

The SDI IDC crewpak includes all the materials needed to prepare for a SDI Assistant Instructor or Open Water Scuba Instructor course. 

This product must be purchased in addition to the course fees. The cost of the pack is $399.90. Please be aware that by buying this pack you will not only have all the required materials for the Assistant Instructor course, but also all the materials you require for progressing onto the Instructor Course.


  • Be a SDI Divemaster or qualifying certification from another certification organization
  • Be at least 18 years old
  • Have 60 logged dives, including night, deep, and navigation dives
  • Have been a certified diver for at least 6 months
  • Have CPR and First Aid Training within the last 24 months
  • Be fit for diving and submit a Medical Statement (PDF) signed by a physician within the last 12 months


Part One: Online completion of all theory components. Must be done before first day of course.

Part Two: Additional Theory Presentations and Practical Sessions (Two days)

Saturday: 8:00am to 7:00pm

Sunday: 8:00am to 6:00pm

Cost: $795.00

Includes: Online Study Fees, Airfills, Instruction

Does Not Include: Instructor Crew Pack, Gear hire, Application Fee, Professional Insurance


All candidates, on completion of their course, are given the opportunity to work in the capacity of an Assistant Instructor in our Company. We see it as a vital step towards gaining experience and preparing an Assistant Instructor for Instructor training at a later stage.

For further information, please contact the shop via email and we can sent you out a detailed flyer on the course.