Become an SSI instructor for the SSI Night Diving and Limited Visibility Specialty course. This requires an individual to first hold a Divemaster certification, log specific numbers of dives, complete online SSI materials, and then undergo the Instructor Training Course (ITC) to gain the skills and knowledge to teach specialty programs like the Night & Limited Visibility course. The Night & Limited Visibility Specialty itself teaches divers how to safely explore underwater environments after dark or when visibility is poor.