Section 3504 requires notification to the public of the safety standards that are applicable to certain foreign flag or United States passenger vessels. In addition, all promotional literature or advertising that offers passage or solicits passengers for ocean voyages anywhere in the world shall include a safety standard statement and shall specify the registry of the vessel. If the vessel meets the international standards to which the United States adheres, then the safety standard statement need not be included. In all other cases the type of safety standard statement that must be included is as prescribed by regulation. This section is intended to place the United States public on notice as to the degree of fire safety compliance of a foreign-flag passenger vessel that does not operate or depart from a port or place in the United States but does embark passengers from the United States at nearby foreign ports. Departures from foreign ports are undertaken because the foreign-flag passenger vessel cannot comply with the safety standards applicable to a United States flag passenger vessel.