Emergency Oxygen Provider Offer aid in a diver emergencyEvery dive centre and dive boat should carry 100% oxygen for diving emergencies.Do you know how to use it? Or when to use it?This course is fairly short yet can be life-saving.Learn how to put the equipment together, how to use the various masks and what to do for a non-breathing diver too. Time commitment Practical About 1-2 hours Prerequisites None – it’s open to everyone!