Best to call TC as they change there minds often. I did the A2 to avoid having to do it twice when the three becomes obsolete! Depends who you talk to and what day you catch Borris on...
Marine Emergency Duties MED A3: Small Non-pleasure Craft
The shortest of the MED courses, the 1.5 day MED A3 course is taught in the classroom only. Designed for crew members on fishing vessels operating not more than 20 miles offshore, and for crewmembers on passenger vessels with un-berthed accommodation only (not including BC ferries), operating on minor waters. Where possible, we recommend students take the more advanced MED A1 or MED A2 which include practical, hands-on sessions. Check with your Transport Canada Office to ensure your training will meet your operational needs!
Covering both MED A1 and MED A2, this 4-day Transport Canada approved course is designed to provide skippers of smaller commercial vessels and other seafarers with various safety related skills associated with small commercial boat operation and ensuring the safety of passengers. You will increase your knowledge of hazards associated with the marine environment, develop skills to assist passengers to survive an emergency, and learn to maintain safety equipment and keep safety records. Casual dress required for pool and firefighting exercises will be discussed at the first class. Students will receive a Transport Canada certificate.