Section R. 281.1234 - Personal flotation devicesRule 4.
(1) Personal flotation devices required by these rules to be carried aboard vessels shall be of the following types:(a) Type I, an approved device designed to turn an unconscious person in the water from a face downward position to a vertical or slightly backward position, and to have more than 20 pounds of buoyancy.(b) Type II, an approved device designed to turn an unconscious person in the water from a face down position to a vertical or slightly backward position and to have at least 15.5 pounds of buoyancy.(c) Type III, an approved device designed to keep a conscious person in a vertical or slightly backward position and to have at least 15.5 pounds of buoyancy.(d) Type IV, an approved device designed to be thrown to a person in the water and not worn. It is designed to have at least 16.5 pounds of buoyancy.(2) Personal flotation devices required by these rules to be carried aboard vessels shall be: (a) Approved by the United States coast guard.(b) Legibly marked with the approval number issued by the United States coast guard.(c) Of an appropriate size for the person for whom it is intended.(d) Readily accessible and immediately available.(e) In good and serviceable condition.Mich. Admin. Code R. 281.1234