TDI

TDI is a technical certification agency that provides individuals with mixed gas diving and rebreather training. TDI’s courses include SDI diver courses, TDI tech courses, and ERDI public safety courses. Its range of services include news, profiles, TDI certification, and replacement card ordering. In addition, it enables its users to buy t-shirts, face masks, bags, and diver manuals. TDI was founded in 1994.