Depth, Supervision and Ratios
Open water dive Maximum depth: 12 metres/40 feet.
Only Teaching status PADI Instructors may conduct the PADI Discover
Scuba Diving program in an open water environmentincluding all
portions of the program leading to and including the open water dive.
The instructor must also maintain direct supervision during the
dive and not engage in any other activities, such as video or photography.
An accompanying certified diver or certified assistant may take video or
photos.
Open water environment Ratios
Participant-to-instructor 4:1
Participant-to-instructor with certified assistant(s) 6:1
NOTE:
Ratios relevant to children 10-11 years old are found in the Children segment of this guide.
The ratios listed are maximums. Reduce them as appropriate based on being able to
maintain adequate control in the prevailing conditions, perform required evaluations, meet
required standards and provide a positive experience for new divers. Although additional
assistants may be used, you cannot increase ratios more than the maximums listed.
Subsequent Open Water Dives
After new divers complete a PADI Discover Scuba Diving open water dive with a
PADI Instructor, they may participate in additional dives supervised by certified
assistants. For subsequent Discover Scuba Diving open water dives, the
maximum ratio is two participants to one certified assistant (2:1). A
Teaching status PADI Instructor must indirectly supervise all subsequent
dives.
Note: Use your judgment to determine if a participant needs a skill review before participating in
subsequent dives. For example, a participant diving with you on a single holiday need not redo
the program or the releases. A participant who returns after several months should repeat the
entire program including new releases.
Skills for Open Water Dive
When Discover Scuba Diving divers will go on an open water dive, a
PADI Instructor must introduce and have them practice the following
skills in shallow water:
BCD inflation and deflation at the surface
Breathing underwater
Regulator clearing
Regulator recovery
Mask clearing
Equalization techniques