Become a Scuba Instructor and live your passion. To join the SSI Instructor Training Course (ITC) you must be a certified Divemaster or have an equivalent qualification (e.g. PADI Divemaster or CMAS ***). After this 10-day course, there is a 2-day Instructor Exam (IE) where an Instructor Certifier from SSI comes to check what you have learned. With a passing grade, you will be an SSI Open Water Instructor!