Lifebuoys

A lifebuoy, also known as a life ring or life preserver, is a buoyant ring-shaped device designed to be thrown to a person in the water to provide buoyancy and aid rescue. Lifebuoys are a common element of maritime safety equipment on ships, docks, lifeboat stations, and in recreational water settings such as pools and lakes.

Most lifebuoys are constructed from buoyant foam or other lightweight, water-resistant materials and are encased in a durable cover. They are brightly colored, typically orange or red, with reflective tape to improve visibility in daylight and at night. A lifebuoy often includes a reinforcing rope or throw line attached to the ring to help the rescuer pull the casualty to safety after contact with the device.

Operation generally involves throwing the lifebuoy toward the person in the water, allowing them to grasp the ring. The attached line is used by the rescuer to tow the person to safety while keeping clear of the vessel’s propeller and lines. Lifebuoys are designed to provide positive buoyancy for extended periods and are tested to meet specified safety standards.

Standards and variations: Lifebuoys are governed by national and international standards, including SOLAS (Safety of Life at Sea) and ISO specifications. Variants include the standard ring life buoy, horseshoe life buoy, and throw bags carrying buoyant lines. In many places, regulatory requirements specify the placement and accessibility of lifebuoys near docks, piers, and swimming facilities.