Costa Crociere is the italian-flagged dream holiday company belonging to Carnival Corporation & plc, offering the best of Ita ... ly onboard 15 ships on its fleet, including the flagship Costa Smeralda powered by Liquefied Natural Gas. To make your experience an unforgettable holiday in complete serenity, our health and safety team and a group of independent scientific experts have developed the Costa Safety Protocol, beingrare the first cruise company to have obtained the Biosafety Trust Certification from Rina. read more