The house flag of Saint Line Ltd (America), London. A white rectangular flag with a red saltire. There is a white shield in the centre with a red and yellow sun motif. The flag is made of a wool and synthetic fibre bunting. It has a cotton hoist and is machine sewn. A rope and toggle is attached.

The South American Saint Line was established in 1939, originally a liner service operated by the B & S Shipping company from Wales, which in turn was the 1933 merger of Barry Shipping and St. Quintin Shipping lines. The service started when B & S began operations to South America in the 1930’s, with all ships’ names starting with ‘Saint.’ The liners carried coal from Wales to Argentina for the British railways there, and northbound, the ships carried grain. World War II followed shortly thereafter and B & S lost a total of 11 ships. Between 1947 and 1961, four new state of the art steamers were ordered, which would accommodate a large amount of cargo and also a small amount of passengers: ‘St. Essylt’, ‘St. John’, ‘St. Thomas’ and ‘St. Rosario’. The ships made port in London, Antwerp, Hamburg and Lisbon in Europe, and in Rio de Janeiro, Santos, Montevideo and Buenos Aires in South America. Additional ships, called ‘sweepers’, followed the main fleet, picking up cargo which was not able to be carried by the larger ships. The company was initially sold to Nerdrum of London in 1961, which shortly thereafter became part of the Houlder Brothers shipping line.