A Diver Medic recognised by IMCA must be capable of administering First Aid and emergency treatment, and carrying out the directions of a doctor pending the arrival of more skilled medical aid, and therefore must be able to effectively communicate with a doctor who is not on site, and be familiar with diving procedures and compression chamber operation. The Diver Medic must also be able to assist the diving supervisor with decompression procedures provide advice as to when more specialised medical help should be requested, and must be fit to provide treatment in a hyperbaric chamber in an emergency, and must therefore hold a valid certificate of medical fitness to dive.