The Hook

One Question That
Changes Everything

Imagine someone collapses in front of you – at a dive site, on a boat, in a subway station. Their heart has stopped. There is an Automated External Defibrillator (AED) on the wall a few metres away. Could you use it? Would you know what to do in the 60 seconds that matter most?

Most people freeze, because they have never been shown. Yet an AED is designed so that anyone can use it – it talks you through every step, and it will only deliver a shock if one is genuinely needed. The single biggest barrier to saving a life is not equipment. It is hesitation born of never having practised.

The Problem

A Stopped Heart
Won’t Wait For
The Ambulance

When the heart goes into ventricular fibrillation, its electrical signals scramble and it stops pumping blood. The brain begins to suffer damage within minutes. Survival drops with every 60 seconds that pass without action. By the time emergency services arrive, the window has often closed.

An AED works by delivering a controlled electric current that stops the chaotic rhythm, allowing the heart’s natural pacemaker to restart in a clean state. Combined with CPR – chest compressions and rescue breaths at a ratio of 30:2 – it is the most effective thing a bystander can do. In Korea, AEDs are now installed in train stations, airports, subways, and department stores. The machines are ready. The question is whether the people around them are.

The Solution

From Bystander
To Responder

Learning to respond is simpler than most people expect. The basic AED sequence is: turn the unit on, attach the two pads (one below the right collarbone, one on the left side below the armpit), let the machine analyse – keeping everyone clear of the patient – and press the flashing shock button only when instructed. Then immediately resume CPR at 30:2, repeating the cycle until professional help arrives.

At NB Divers, emergency response is not an afterthought – it is built into how we train divers. We run Emergency First Response (EFR) courses covering CPR, AED use, and first aid, the same primary and secondary care skills that form the foundation of the PADI Rescue Diver course. Learning these skills makes you a safer dive buddy, a more capable professional, and a more useful human being on dry land too.

Korea & Emergency Training

Why This Matters
For Divers In
Korea

Diving in Korea often means cold water, boat dives in the East Sea, and sites a fair distance from the nearest hospital. That makes self-sufficiency in an emergency more important, not less. A team where every diver holds current EFR and Rescue certification is a team that can manage a problem on the surface long before an ambulance could ever reach the shore.

NB Divers teaches EFR and Rescue Diver fully in English for expats and visitors in Seoul, alongside Korean classes. Whether you are starting your diving journey or moving toward professional level, emergency response is a credential that travels with you everywhere – in the water and out of it. Have questions about safety and training? We are happy to walk you through it.

Learn right, enjoy forever. Real competence – including the competence to handle the worst moments – is what separates a certificate from a true diver.