Rescue Diver course: preventing and handling problems

What the Rescue Diver course covers

Up to this point, your training has been about you: your gear, your air, your buoyancy. The Rescue Diver course turns your attention outward. You learn to notice the signs that another diver is stressed or struggling, to step in early, and, if something does go wrong, to manage the situation until professional help takes over.

It is the third rung on the scuba certification ladder and the last recreational course before professional training. It is also a requirement for becoming a divemaster.

Prerequisites

• Age: 12 or older (junior ratings apply below 15 at many agencies).
• Certification: usually Advanced Open Water, or a set of adventure dives that includes underwater navigation. Requirements differ by agency.
• First aid and CPR: current training, typically within the past two years. Many dive centers run a first aid course, such as Emergency First Response, alongside the Rescue Diver course.

What you learn

Self-rescue

The course starts with you. You review how to deal with cramps, an out-of-air situation, a free-flowing regulator, and being tired at the surface. A diver who can solve their own problems is far less likely to need rescuing.

Recognizing stress

Most diving emergencies start small. You learn the signs of a diver who is anxious or overloaded: rapid breathing, wide eyes, jerky movements, fiddling with gear, staying close to the surface or the line. Spotting these early and helping calmly often prevents an emergency entirely.

Responding to divers in trouble

You practice approaching a tired or panicked diver at the surface without becoming a second victim, assisting them to safety, and giving support underwater. You learn to manage an unresponsive diver underwater and to bring them to the surface in a controlled way.

Emergency management

You learn how to organize a response: who calls for help, what information emergency services need, how to give emergency oxygen if it is available, and how to keep records. You also practice getting an unresponsive diver out of the water onto a boat or shore.

Scenarios

The final part of the course puts it together. Your instructor stages realistic scenarios, such as a missing diver or a diver who surfaces unresponsive, and you manage them from start to finish.

What to expect physically

The Rescue Diver course is more physical than earlier courses. You tow divers at the surface, haul them out of the water and repeat exercises until they are smooth. You do not need to be an athlete, but you should be in reasonable shape and well rested. Tell your instructor about any injury or limitation before you start; techniques can often be adapted. If you have any doubt about your fitness, read our page on scuba diving medical requirements.

Why take it

• You become a better buddy, which makes every dive safer for the people you dive with.
• You worry less underwater because you know what to do.
• It is the gateway to professional training if you want to work in diving.
• The skills, especially first aid and calm problem-solving, apply far beyond diving.

Many of the habits taught in the course are covered in our guide to scuba skills and safety, which is a good refresher before you sign up.