By Daniel Kline The family-friendly MSC Cruises ship will sail out of Miami, putting the European company into a clear rivalry with the two biggest cruise lines that sail from U.S. ports. Miami stands as the unofficial home port for the U.S. cruise industry and the de facto cruise capital of North America. Royal Caribbean (RCL) – Get Royal Caribbean Group Report, Carnival Cruise Lines (CCL) – Get Carnival Corporation Report, and Norwegian Cruise Line (NCLH) – Get Norwegian Cruise Line Holdings Ltd. Report all are headquartered in the city. In addition, Port Miami hosts multiple cruise ships fr…