All boaters riding on an open deck of a recreational boat that is underway should wear an approved type I, II, III, or V PFD.
Boat Length
Vessels of all lengths should comply with the stipulated boating laws on wearing of PFDs while on Tennessee waters.
Compulsory PFD Requirements for Tennessee
All children that are 12 years and younger must wear a type I, II, III, or V USCG-approved life jacket.
Exceptions from wearing PFDs in Tennessee
It is not necessary to be in a PFD when the vessel is moored, anchored, or aground.
Disclaimer: The information presented here is meant to be a general reference for educational purposes. Please check with your state for the most up to date information and any current changes in the laws. Source: BoatUS