What is a characteristic of Type I lifejackets?

Type I lifejackets are designed primarily for open water and are extremely buoyant. One of their key characteristics is that they are effective in turning unconscious individuals onto their backs to keep their airways clear of water. This feature is crucial for safety in situations where rescue might take time, as it enhances the likelihood of survival by ensuring that the wearer maintains a face-up position.

This characteristic makes them preferable for commercial use, particularly in situations where staying afloat is crucial, even if the wearer has lost consciousness. The design focuses on maximizing buoyancy and providing the best chance of survival in open waters, as opposed to other types that may be more focused on comfort or ease of movement.