Brian_V - 6/17/2015 6:26 AM
There are a few specialty cert’s you can get that counts toward Master Scuba Diver that are not in-water
Diving courses (ie: Equipment Specialist; Sea Signs; Project Aware; etc), but I don’t see EFR listed as one of them in the Specialty Instructor Manual. As mentioned before, EFR is one of the prerequisite for Rescue Diver, which you need to complete (along with 50 logged dives) before you can apply for Master Scuba Diver certification, so you probably should count on taking another specialty course in its place.