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Lifebuoy

technology Maturity 11-13 Next article →

A lifebuoy is a ring used to save people.

Lifebelt in Water 1
Lifebelt in Water 1

It is often shaped like a ring or a horseshoe. You can throw it to a person in the water. It provides buoyancy. This means it helps them float so they do not sink. Many lifebuoys have a rope attached. This lets a rescuer pull the person to a boat.

Ring buoy with light
Ring buoy with light

Some modern rings have lights. These lights turn on when they touch seawater. This helps rescuers find people at night.

Ships and boats carry these tools. In the United States, the Coast Guard has rules for them. All boats 26 feet or more must have one. Long ago, the Knights of Malta used lifebuoys made of cork. A man named Juan José Navarro helped use them on Spanish ships. In 1803, Knight Spencer made a new kind. He used 800 old corks from taverns. He covered them in cloth to keep them waterproof. He even won a silver medal for his work.

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File:Ring buoy with light.jpg
Ring buoy with light.jpg
File:Lifebelt in Water 1.jpg
Lifebelt in Water 1.jpg
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