Buoyancy Aid

A personal flotation device designed to assist a person in staying afloat in water, typically used in recreational boating or water sports.

A buoyancy aid is a type of personal flotation device (PFD) that provides additional buoyancy to help a person stay on the surface of the water. Unlike lifejackets, which are designed to turn an unconscious person face-up, buoyancy aids are generally intended for use in controlled environments where the wearer is conscious and can swim. They are often less bulky and more comfortable than lifejackets, making them popular for activities such as kayaking, dinghy sailing, and windsurfing. 

Buoyancy aids are typically made from lightweight foam materials that provide flotation. They are designed to be worn over the torso and are secured with straps or buckles. The buoyancy provided by these devices is measured in Newtons (N), with common ratings being 50N, 100N, and 150N, depending on the level of flotation required. A 50N buoyancy aid, for instance, is suitable for competent swimmers in sheltered waters, while higher ratings are needed for rougher conditions or non-swimmers.

It is important to note that buoyancy aids do not guarantee survival in all conditions, especially in rough seas or for individuals who are unconscious. They are best suited for situations where the wearer is likely to be active in the water and can assist in their own rescue. Proper fit is crucial, as an ill-fitting buoyancy aid may not provide the necessary support or could even impede movement in the water.