46 U.S.C. § 3509: Medical standards

The owner of a vessel to which section 3507 applies shall ensure that—(1) a physician is always present and available to treat any passengers who may be on board the vessel in the event of an emergency situation; (2) the vessel is in compliance with the Health Care Guidelines for Cruise Ship Medical Facilities established by the American College of Emergency Physicians; and (3) the initial safety briefing given to the passengers on board the vessel includes—(A) the location of the vessel’s medical facilities; and (B) the appropriate steps passengers should follow during a medical emergency.