Commercial Diving School - Underwater Welding, Non-Destructive Testing NDT, HAZMAT / HAZWOPPER Training

Complete Commercial Diver Training

CDI offers a complete commercial diver training program that will prepare you to succeed in the marine construction and commercial diving industries after 28 weeks. Beginning in a controlled environment onsite, you will learn to use industry standard equipment, then use your training in open water to complete the dives needed to earn your certification.



Commercial Dive School Tour - Tour the CDI Diving School Facility

CDI Campus - Goodyear, Arizona

Our brand new 2.8 acre facility is located in Goodyear, Arizona. Your diving career will begin in our classrooms, three 21,000 gallon project tanks, and a periscope tank for confined space training. Later in the program, your open water training will be completed at Lake Pleasant, home of the fully submerged Old Waddell Dam. CDI is the only diving school in the USA to provide open water dam, real world training as part of our program.


Learn to be a Commercial Diver - Commercial Diving Career

Experts in Commercial Diving

CDI's founders know what skills are in high demand in the commercial diving and marine construction industries. Not just in theory, but through over 20 years of practice operating on commercial diving projects of all sizes and conditions. We work to develop the skills and habits necessary for our students to be the type of diver we would want to work with.


Commercial Divers International strives to provide world class commercial divers for the underwater marine industry, with a strong focus on both state of the art training and safety. Our educational programs will benefit our students and the industry, by providing the ability for our students to receive gainful employment, and providing elite professionals for the marine construction field.

CDI is members of/work with the following agencies and institutions:

Arizona State Board for Post Secondary Education    City of Goodyear Arizona Business    OSHA - Occupational Safety & Health Administration    TSA - Transportation Security Administration    ASNT - The American Society for Nondestructive Testing    AWS - American Welding Society    ADCI - Association of Diving Contractors International    DAN - Divers Alert Network    Dive Lab    Kirby Morgan    Commercial Divers International, Inc BBB Business Review