Seabourn Cruise Line is a luxury small ship cruise line headquartered in Seattle, Washington. It is owned by Carnival Corporation & plc.

Carnival Corporation & plc is a British-American cruise operator with a combined fleet of over ninety vessels across nine cruise line brands and one joint venture with China State Shipbuilding Corporation (CSSC). A dual-listed company, Carnival is composed of two companies – Panama-incorporated, US-headquartered Carnival Corporation, and UK-based Carnival plc – which function as one entity. Carnival Corporation is listed on the New York Stock Exchange, whereas Carnival plc is listed on the London Stock Exchange with an ADR listing on the NYSE. Carnival is listed in both the S&P 500 and FTSE 250 indices.