Frequently Asked Questions

On the surface, PADI and SSI diving certifications seem very similar, but there are some key differences that might make one a better fit for you than the other. Both offer safe, reliable training, are recognized worldwide, and are regulated by the World Recreational Scuba Training Council. Let's look at what sets them apart so you can make an informed choice!

What are their origins?

PADI = Professional Association of Diving Instructors
In 1966, John Cronin and Ralph Erickson decided to separate from the National Association of Underwater Instructors (at the time the largest training organization) to found their own diving school: the Professional Association of Diving Instructors. They believed it was better to divide the curriculum into more “digestible modules” so that students could learn and retain the knowledge more easily.

SSI = Scuba Schools International
Just four years later, in 1970, Robert Clark, one of the pioneers in scuba training, founded Scuba Schools International. SSI was the first organization to offer a complete teaching curriculum.

Let's discuss some differences.

Flexibility of instructors

PADI: The curriculum is fixed and offers little room for personalization.
SSI: Instructors have the freedom to add extra information and tailor lessons to your needs.

PADI: Skills must be mastered in a fixed order.
SSI: You can skip a difficult skill, move on to another, and come back later when you are ready.

PADI: Instructors may work as freelancers at multiple dive centers.
SSI: Instructors are affiliated with one specific dive center.

Underwater techniques

The way you learn to handle certain situations can differ from organization to organization.

PADI: In a “no air” situation, you learn to grab your buddy’s alternative regulator.
SSI: You learn to grab your buddy's primary air source — the regulator he or she is using at that moment.

The SSI method is based on the instinct that a diver out of air automatically reaches for the nearest air source. It is important to know these differences, especially when diving with a new buddy.

Course fees

Certification Card: Both organizations offer a digital card. PADI charges an additional fee for a physical card, while SSI includes it in the course price. PADI temporarily issues a provisional card until the physical card arrives; SSI can issue a physical card immediately after completion of the course.

Course Material: At SSI, the course material is free but only available online. At PADI, you have to pay (included in the course fee), regardless of whether you choose online access or a physical book.

Certification levels

The names of the certification levels vary by organization, so make sure you know exactly what you are signing up for. If you plan to combine courses from both PADI and SSI, keep in mind that "crossover" is generally easier with SSI. With PADI, it can be slightly more difficult to meet the crossover requirements.