1. Dive with an evenly matched buddy, and conform to the level of the least capable
2. Weight yourself correctly (positively buoyant at surface) even after exhalation.
3. Do not hyperventilate to excess.
4. One up/ One down – diving with constant visual contact. When conditions allow each
diver should have a flag.
5. Maintain close, direct supervision of any freediver for no less than 30
seconds after he surfaces.
6. Make your minimum surface interval twice the duration of your dive time.
7. Do not take every dive to its limit. Maintain a reserve.
8. Review, practice and discuss how to recognize and handle blackouts
and near blackouts.
1. Get victim to surface immediately. Establish positive buoyancy for the both of you.
2. For a witnessed blackout; remove mask and snorkel, blow on face-eyes, stimulate
face with a few taps, vocalize encouragement to breathe, otherwise open the airway
and begin immediate rescue breathing. 1 breath every 5 seconds
3. Get victim to land or boat ASAP, manage ABCDs (airway-breathing-circulation-deadly
bleeding) start CPR with O2, 30 compressions to 2 ventilation’s, as needed.
4. If evacuation from water is prolonged, monitor Airway & Breathing and provide
rescue breathing (1 breath every 5 sec.) during transport if needed.
5. Seek help from EMS (emergency medical services) 911, or hail the Coast Guard on
Channel 16 on VHF radio.
6. After a SWB, STOP diving and immediately seek medical evaluation.
The Freedivers Recover Vest
Make sure to read these two articles and also check out Dr. Terry Mass and Oceanic Safety Systems website www.oceanicss.com
The Freedivers Recovery Vest (PDF)
The Case for a Device to manage Freediver blackout (PDF)
DiveWise – A Freediving Education Initiative
Here is another source for freedive safety education and information www.divewise.org