Navigating safely: Many people who die by drowning die in navigation accidents. Safe navigation practices include being informed of the state of the sea and equipping the boat with regulatory instruments to keep people afloat. These instruments are lifejackets (see lifejacket use above) and professional lifebuoys with the shape of a circle  (ring-buoy, hoop-buoy, life-ring, life-donut, lifesaver, or life preserver). Use the "buddy system": Dont swim alone, but with another person who can help in case of a problem. Rescue robots and drones: Nowadays, there exist some remote-controlled modern devices that can accomplish a water rescue. Floating rescue robots can move across the water, allowing the victim to hold on to the drone and be moved out of the water. Flying drones are very fast and can drop life jackets from air, and may help to locate the victim’s position. Follow the rules: Many people who drown fail follow the safety guidelines of the area. It is important to pay attention to the signage that indicates whether swimming is allowed or if a lifeguard is on duty. (lifeguards, coastguards, etc.) Water safety
The concept of water safety involves the procedures and policies that are directed to prevent people from drowning or from becoming injured in water. Time limits
The time a person can safely stay underwater depends on many factors, including energy consumption, number of prior breaths, physical condition and age. An average person can last between one and three minutes before falling unconscious, and around ten minutes before dying.
In New Zealands early colonial history, so many settlers died while trying to cross the rivers that drowning was called "the New Zealand death. "People have drowned in as little as 30 mm (1.2 in) of water while lying face down. Children have drowned in baths, buckets, and toilets. People who are inebriated or otherwise intoxicated can drown in puddles. Death can occur due to complications following an initial drowning. Inhaled fluid can act as an irritant inside the lungs. Even small quantities can cause the extrusion of liquid into the lungs (pulmonary edema) over the following hours; this reduces the ability to exchange the air and can lead to a person "drowning in their own body fluid." Vomit and certain poisonous vapors or gases (as in chemical warfare) can have a similar effect. The reaction can take place up to 72 hours after the initial incident and may lead to a serious injury or death. Risk factors
Many behavioral and physical factors are related to drowning:
Drowning is the most common cause of death for people with seizure disorders, largely in bathtubs. Epileptics are more likely to die due to accidents such as drowning. However, this risk is especially elevated in low- and middle-income countries compared to high-income countries. The use of alcohol increases the risk of drowning across developed and developing nations. Alcohol is involved in approximately 50% of fatal drownings, and 35% of non-fatal drownings. Inability to swim can lead to drowning. Participation in formal swimming lessons can reduce this risk.