Steward's assistant

A steward's assistant (SA) is an unlicensed, entry-level crewmember in the Steward's department of a merchant ship. This position can also be referred to as steward (the usual term on British ships), galley utilityman, messman, supply or waiter.
The role of the steward's assistant consists mainly of stocking, cleaning and assisting with the preparation and serving of meals.