All boaters in a vessel that is underway must wear a personal flotation device in Maryland waters.
Boat Length
Maryland requires that boats less than 21ft in length have PFDs that are US Coast Guard-approved.
Compulsory PFD Requirements for Maryland
All children under 13 years must wear a USCG-approved PFD. For children under the age of 4, additional features appropriate for infants apply. These features include an extra strap to secure the kid within the PFD, an inflatable collar or headrest, and a web handle to ensure the child is easily accessible from the boat.
Exceptions from wearing PFDs in Maryland
It is not compulsory to be in a life jacket when a child is in an enclosed cabin or is below deck.
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