Founded in 1837 as the Peninsular Steam Navigation Company becoming the Peninsular & Oriental Steam Navigation Co. in 1840. Merged with Orient Line in 1960. The existing passenger ship operations were rebranded as P&O Cruises in 1977. Princess Cruises were acquired in 1974 as were AIDA Cruises in 2000. All three operations were divested as P&O Princess Cruises later in 2000 which was subsequently acquired by Carnival Corporation in 2003.