SS The Emerald is a cruise ship owned by the Cyprus-based shipping company Louis Cruise Lines. She was built in 1958 by the Northrop Grumman Shipyard in Gulfport Mississipi USA for Grace Lines as SS Santa Rosa. Between 1992 and 1995 she sailed for Regency Cruises as SS Regent Rainbow and between 1997 and 2008 she sailed for Thomson Cruises under its present name.
Builders of the SS The Emerald are Gulfport, Mississippi and Litton-Ingrall.