Code of Federal Regulations Title 46. Shipping § 46.76.05–1 Fire detection and alarm systems

(1) Any vessel on an international voyage;

(2) Any vessel of more than 150 feet (45.72 meters) in length having sleeping accommodations for passengers;  and

(3) Any vessel of 150 feet (45.72 meters) or less in length, not on an international voyage, having sleeping accommodations for 50 or more passengers. Vessels in this category are not required to have a fire detection system in the cargo spaces.