Which type of personal flotation device (PFD) has the greatest amount of buoyancy?

The type of personal flotation device (PFD) with the greatest amount of buoyancy is typically the Type I PFD, also known as an offshore life jacket. Designed for rough waters and prolonged immersion, Type I PFDs provide significant buoyancy, often between 15.5 to 22 pounds, and are constructed to turn an unconscious person face-up in the water. They are ideal for offshore use, where maximum buoyancy is crucial for safety.