Welcome to the delayed surface marker buoy diver specialty online course. The purpose of the PADI DSMB Diver Specialty course is to familiarize divers with the skills, knowledge, planning, equipment, organization, procedures, techniques, problems, hazards, and excitement of diving with a DSMB. The DSMB Diver Specialty course is intended and designed to be a supervised introduction to diving with a DSMB. Training will emphasize fun and safety. This course consists of 6 lessons, which are broken down into topics, and one knowledge review.