Royal Mail Ship

A Royal Mail Ship (RMS) is a ship that carries mail for the United Kingdom's postal service, historically used for international and transoceanic routes. The designation indicates that the vessel is authorized to carry mail under the British postal system and often symbolizes a ship’s official role in transporting postal items across the sea. While the term originated in the era of letter ships, today it is mostly historical or honorary, still recognized as part of the tradition and heritage of British maritime and postal history.