Deep Diving

Book Now!

To reserve a place in an upcoming class, you may select your next available date and proceed with your course fee payment. Please note that the schedule will depend on pool and instructor availability. Our training team will follow up with you to schedule your course dates. They can be reached at

Many exciting dive sites are located in deeper water. Without proper training, this kind of diving puts you at risk. The SSI Deep Diving Specialty will give you the ability to safely and comfortably plan and conduct dives beyond 60 feet. It is required training for many charter and liveaboard operations and is a prerequisite for some advanced training.

Why learn deep diving?

There are endless reasons for a diver to want to push their boundaries and venture deeper. There are amazing wrecks and reefs just waiting for you down there to explore what they have to offer. The deep diver course gives you the experience, techniques, and ability to be prepared for the new challenges you’ll face by going deeper. The underwater world is very different once you start going deeper than 60ft. Nitrogen narcosis, decompression planning, and air consumption have more rigid requirements at depth. These are just a few of the reasons why diving deeper is much safer with the proper training. The Deep Diving class includes one class session, one pool session, and a minimum of 3 open water dives. These dives can be completed from some select shore diving sites.

Our deep diving course is unlike ANY OTHER and trains you not only to experience added depth in a safe environment but also how to plan for and mitigate potential added risks. Our deep diving program teaches both new equipment techniques and skills that other deep-diving courses don’t even address.


Delayed Surface Marker Buoy (DSMB) Deployment – A DSMB is a brightly colored inflatable tube that can be inflated and deployed while at depth. This tube is attached to a line and spool you hold at depth so that you can maintain contact and control of it while it is at the surface. This tool and the technique are paramount for deep divers to master so in the event they get separated from their team or the ascent line to their surface support (i.e. a dive boat) they can quickly mark their location without having to quickly ascend. A skill that takes practice to master but is of the utmost importance to deep divers.

Redundant Gas Supply Orientation and Use – As depth increases so does pressure. This added pressure causes a diver to consume more gas the deeper they go. At 66 feet a diver will consume 3x the amount of gas they do at the surface and 4x in 99 feet of water. This added gas consumption can create a big problem if you need to share air at depth. The added depth can also cause a regulator to have a drastic reduction in performance if more than one diver is breathing hard on it, such as in a real-world gas sharing scenario. Lastly, it is also very reassuring to have a completely redundant supply of gas in case yours fails so you still can ascend at a controlled rate and perform a proper safety stop

This is why we equip and teach all of our deep-diving students to use pony bottles. A pony bottle is a small cylinder (1/3 to 1/2 the size of your primary tank) that has an independent regulator system. This additional bottle can take a bit of getting used to but adds a tremendous amount of safety to deeper dives and we recommend it to any of our divers venturing deeper or in poor visibility conditions that could lead to team separation such as scallop diving.

Advanced Dive Planning – The days of jumping into the water without a well-vetted dive plan are over. How much gas do I need to have left in my tank to have a realistic chance of getting myself and my team to the surface in an out of gas scenario? Does my team have enough gas to help me should I have a lost gas failure? What is our emergency plan should the team get separated at depth. How will redundant dives affect my decompression limits based on previous dive times and depth? How can I plan for a multilevel dive with my team? What likely failure scenarios does this deeper dive introduce and how can my team better prepare for them? These are not hard questions to answer but they do require some thinking and know-how which is all addressed during our deep diving program.

This course only runs from May – October.

Please use the “Book Now!” link to signup. You can schedule your class dates with our staff in-person, over the phone, or via email.

Before Class

  • Students must be 15 years or older.
  • This course is only available for certified divers.
  • A clear medical history or MD sign-off form.
  • The student must provide their own Mask, Fins, Snorkel, DSMB, Finger Spool, and WetNotes. All other equipment can be rented or is provided.

Interested in a private? We got you covered! Sign-up today!

Private courses are set up slightly differently than regular deep diving courses. The beginning process is the same – you’ll still be required to fill out the same paperwork but you won’t be tethered to our schedule. Instead, you can find out whenever works best for you and let us know so we can get the sessions scheduled – we can even schedule your pool training outside our normal pool hours*. Make sure to let us know in advance, as we have to rent the pool and make sure it doesn’t conflict with any other activities going on that day. If you do use the pool when we have it rented that’s perfect! There will be other people in the pool but you (or your group) will be working privately with your instructor.

*Additional fees (such as pool rental fees) may apply

Private Scheduling is done through Kim and Max in our training department at They will be in contact within 24 hours of any inquiries. If you need to contact us sooner please call us at 617-277-2217.

Private Pricing:

1 Person $780 per person | $780 total3 People $500 per person | $1500 total
2 People $600 per person | $1200 total4 People $420 per person | $1680 total


The Deep Diving course has an in-water portion that requires a full set of gear. When you book the course through this page a set of rental gear is automatically included in your purchase and MUST be reserved ahead of time. The gear rental set can be removed if you have your own gear for the course. If you have your own gear, we suggest making plans to carry all of that gear along with you.

Availability fills quickly and spots are not guaranteed! We recommend registering and reserving rental equipment at least 2 WEEKS IN ADVANCE!

*We require that students have their own specialty-specific gear for several of our courses. This equipment is necessary for the type of diving that you will be embarking upon during, and after certification. Please refer to the prerequisites section for a list of the gear you will need to own for this course. We offer a 10% discount to all of our students who purchase the required equipment for the class through us as well as our famed 60 day return policy that will ensure that you are happy with everything that you buy. We appreciate your support of your local dive shop, which allows us to continue operations and offer the services that we do today****

If you need to rent any gear other than that listed in the prerequisites, you can do so with us below! For anything else check out the our rental page

  • One class session & one pool session.
  • Two days of diving with 1 to 3 dives daily. Typically off a boat.
  • Internationally trained/certified instructor
  • Agency approved on-line course work.
  • Performance of skills such as safe descents, gas management, DSMB & Pony set up and use, deco time management, team skills safe ascents, and more...
  • All deep-diving specific equipment other than those listed in the prerequisites.
  • This program will cover the following skills: DEEP DIVING SKILL CARD

Class Forms

Below you will find links to all of our REQUIRED class forms. These forms must be completed in their entirety before participating in any ECDivers program. Arrival to class with incomplete documents will result in a forfeiture of that class date. If you have any questions or need assistance on completing the class forms please email our training department at