Becoming an SDI Divemaster is the first certification at the professional level. During the course, you will learn how to work with divers, lead certified divers, and act as a dive guide. You will learn about marine life, physics and physiology, and practice your proficiency with scuba and snorkeling skills.

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Who is this course for?

It is designed for advanced divers interested either in working in the dive industry as a professional dive guide, or moving on to become a dive instructor.

Course Prerequisites

  • Must be 18 or older
  • Certified SDI Advanced Diver or equivalent; advanced certification must include verifiable experience in extended range diving, navigating, and night and limited-visibility diving
  • Certified SDI Rescue Diver or equivalent
  • Proof of current CPR, first-aid, and oxygen provider certifications (where local law permits)*
  • Proof of at least 40 logged dives
  • Course Standards & Procedures

*Note: SDI CPROX, CPR1st or CPROX1stAED courses may be combined with the SDI Divemaster program by qualified instructors

After graduation...

Upon successful completion of this course, graduates may assist an active SDI instructor during approved diving courses or supervise and conduct dives for certified divers, provided the activities are similar to the graduate’s prior experience and training.

What you can expect to learn

The SDI Divemaster course takes an in-depth look at the following:


  • SDI standards and procedures
  • History of SDI
  • Code of ethics and professionalism of an SDI Divemaster
  • Products and procedures
    • How to place orders
    • Yearly renewals
  • Liability and insurance
    • Risk management
    • Waivers and releases
    • Accident reporting
  • Knowledge development
    • Equipment
    • Physics and physiology of diving
    • Medical problems related to diving
    • Use of dive computers and tables
    • Diving environment
    • Dive planning and dive management
    • Problem  solving
    • Underwater and surface communications
    • Diver assistance
    • Avoiding out-of-air and emergency situations
    • Recommended safe diving practices
    • Boat diving procedures
    • Shore/beach diving procedures
    • Night diving procedures
    • Emergency procedures
    • Accident management
  • Leadership development
    • Planning group dives
    • Divemaster check-lists and logs

Students will be required to demonstrate these skills: 

  • 800-meter swim with mask, snorkel, and fins non-stop without the use of arms in less than 17 minutes
  • 400-meter swim on the surface, any stroke. Must be non-stop without the use of swimming aids in less than 10 minutes; swim goggles permitted
  • Scuba skills - minimum equipment
    • In water, transport another diver in full scuba equipment at a quick pace for 4 minutes
    • Demonstrate a complete rescue scenario
    • Perform underwater skills with and without a mask
    • Swim on the surface for 100 meters using the snorkel in full scuba equipment
    • Bring a diver simulating unconsciousness up from depth, not greater than 6 meters. At the surface, swim them 100 meters in less than 4 minutes.
  • Confined water skills
    • Preparation and planning
    • Briefing and debriefing
    • Group control
    • Problem recognition and solving
    • Diving equipment assembly and disassembly
    • Equipment inspection
    • Entries/exits
    • Proper weighting and buoyancy control
    • Snorkel and regulator clearing
    • Regulator recovery
    • Controlled descents and ascents
    • Underwater swimming
    • Mask clearing
    • Buddy system techniques
    • Weight system removal and replacement
    • Out-of-air emergency alternatives
    • Equipment care and maintenance


  • Satisfactorily complete the SDI Divemaster written examination, or online version, with a minimum score of 80 percent and 100 percent remediation
  • Complete all water requirements
  • Demonstrate to an active SDI Instructor the ability to solve in-water and out-of-water diver problems
  • Demonstrate mature and sound judgment concerning dive planning and execution
  • Operate as a Divemaster in a wide variety of environments

Divemaster Course Costs:

  • The Divemaster Course Cost: $600.00
  • SDI Online Divemaster Kit: $421.00
    • eLearning user guide
    • SDI logo sticker
    • SDI hat
    • SDI patch
    • SDI/TDI/ERDI Professional bag
    • SDI Dive Leader record folder
    • Rescue Diver slate
    • SDI Divemaster manual
    • SDI Divemaster slate
    • SDI Divemaster KQ
    • US Navy air deco table
    • Online access code
  • SDI Divemaster registration fee (paid to SDI): $110
  • Aquatic Adventures provides a complementary swim pass for the lap pool during your candidacy if you need to practice your swimming 
  • Divemaster candidates are to provide their own dive equipment including the following:
    • Mask, fins, and snorkel
    • Buoyancy compensator device (BCD) with a low-pressure power inflator
    • Regulator with submersible pressure gauge
      • If you are wearing an air-integrated hose-less computer, you are not required to carry a submersible pressure gauge 
    • Alternate air sources
    • Weight system
    • Personal dive computer
    • Exposure suit adequate for the training conditions
    • Compressed gas cylinder
    • Compass
    • Knife and rescue signal 
    • Tanks and weights will be provided by Aquatic Adventures Ohio during your training

If you would like to register for the next Divemaster course, we would invite you to a consultation with our current staff instructor to go over the details of the Divemaster course with you. During your consultation please bring all of your certification cards, your logbook and any information pertaining to your diving career. 

Please fill out the form below to schedule your desired date. If you have any other questions please feel free to email or give us a call at (614) 545-3483.

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