an Entity references as follows:
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, waiter or General Steward (GS). The role of the steward's assistant consists mainly of stocking, cleaning and assisting with the preparation and serving of meals.