Costa Crociere S.p.A., headquartered in Genoa, comprises the brands Costa Cruises, AIDA Cruises and Iberocruceros. It has the largest fleet of all European cruise ship operators, with a total of 26 ships in service, plus another 3 new ships to be delivered by 2016. It is part of the Carnival Corporation & plc group, the world's leading cruise ship operator.