Needs of Lifeguards and drowning victim
The worldwide rescue standard applies 10/20 theory (Discover in 10 seconds, rescue in 20 seconds). In real world, only 16% of drowning victim can be discovered in 10 seconds by lifeguards. On average, drowning victim are discovered in 1 minute and 9 seconds. No matter how professional and attentive the lifeguards are, they simply cannot see everything. The earlier the drowning victim get detected, the higher chance they can survive. The state-of-the-art Poseidon’s computer vision and aquatic image processing complements lifeguards' vigilance and alerts them audibly and visually when a victim is in distress.
Time needed to discover an underwater mannequin by a lifeguard*
16%
Time needed to discover an underwater mannequin by Poseidon*
84%
84% 10 sec
16% Less than 10 sec
31% 11-30 sec
15% 31-60 sec
24% 61-180 sec
14% Over 180 sec
*Jeff Ellis & Associates, 2001 and 2002 study. 682 tests performed with underwater dummy victim.
Worldwide Rescue Standard 10/20 Theory
Accident happens in a second and lifeguard must detect and rescue the drowner soonest possible to increase the chance of survival. Based on the world rescue standard, drowning victim must be discovered in 10 seconds and rescued in 20 seconds.
* Jeff Ellis & Associates, 2001 and 2002 study. 682 tests performed.
This is fallacy that lifeguards think they can see through the water under the pool like through the mirror. This misunderstanding is fatal! Dr Tom Griffiths from the Penn State University in the US explained that “waterlet” distorts the image under water so lifeguards cannot get full visibility of the situation under water.
Reasons of Drowning Fatality
1. drowning victim lost consciousness followed by suffocation, nervous twitch, heart attack, severe cramp and finally sinking.
2. Most of the drowning cases result in excessive water inflow to the trachea and lungs that interferes breathing. The drowning victim would then sink to the pool bottom. Some cases involve cramp in the throat that air and water cannot enter the lungs which finally leads to suffocation to death.
3. The above two situations both disrupts the functioning of the lungs so breathing halts and then cerebral anoxia and finally leads to death.
Warning: Poseidon is a drowner detection system and its main purpose is to complement and work alongside with lifeguards. Poseidon cannot replace the responsibilities and duties of the lifeguards and the system does not mean to reduce their vigilance. Poseidon does not save people from drowning but lifeguards do. Under no circumstances should the presence or use of Poseidon result in the reduction or modification of lifeguard staffing or duties as required by regulation or normal practices.
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