Which type of PFD is specifically designed for calm, inland waters?

Type III personal flotation devices (PFDs) are specifically designed for calm, inland waters, making them the appropriate choice in this context. They offer a good combination of comfort and high mobility, allowing the wearer to perform various activities while still providing adequate buoyancy. These PFDs are favored for activities like fishing, kayaking, and sailing on lakes or slow-moving rivers, where the water conditions are typically more stable.

In contrast, Type I PFDs are made for open water and rough conditions, designed to turn an unconscious person face-up in the water, which can be less comfortable and more restrictive for recreational use on calm inland waters. Type II PFDs offer some inherent flotation but are also intended for calm waters and are typically less comfortable than Type III. Type IV devices, such as rings or cushions, are meant to be thrown to someone in distress rather than worn, and while they serve a different purpose, they do not provide the same level of support as the Type III PFD would for calm conditions.