The Fastest Lifeguard

摘要

Ocean riptides drown an estimated 100 people every year in the U.S. They can sweep a swimmer out to sea at up to eight feet per second, outpacing even the strongest lifeguard. EMILY, the Emergency Integrated Lifesaving Lanyard, is a four-foot-long remote-controlled rescue buoy that can zip across choppy waves at up to 26 mph, reaching a drowning victim 10 times as fast as any swimmer. Propulsion comes from an electric motor and a Jet Ski-type impellor that pulls water in and ejects it out the back, generating enough thrust to safely tow a struggling swimmer back to shore.