A ship sponsor, by tradition, is a female civilian who is invited to "sponsor" a vessel, presumably to bestow good luck and divine protection over the seagoing vessel and all that sail aboard. In the United States Navy and the United States Coast Guard the sponsor is technically considered a permanent member of the ship's crew and is expected to give a part of her personality to the ship, as well as advocate for its continued service and well-being. For passenger ships the sponsor is called a Godmother.
Passenger ship godmothers
Carnival Cruise Lines:
Disney Cruise Line:
Holland America Line
Norwegian Cruise Line
Princess Cruises
Royal Caribbean International:
References
Ship sponsor Wikipedia(Text) CC BY-SA