Both scuba diving qualifications from BSAC and SSI are recognised internationally. The beginner scuba diving certification that BSAC teach is “Ocean Diver” where the maximum depth is 20 metres (67 feet). Whereas SSI teaches “Open Water Diver” as their first course where the maximum depth is 18 metres (60 feet). The course that BSAC teaches tends to be slighter cheaper and take longer than SSI. Many argue that BSAC training is more thorough too.