This is a colloquial phrase in Spanish, mainly used in Spain and it literally translates to 'little sailor on deck'. However, it is often used to describe someone who is new to a place or situation, akin to a 'new kid on the block'.
Examples
- Spanish: Juan es el marinerito sobre cubierta en la oficina, comenzó a trabajar aquí la semana pasada.
- English: Juan is the 'little sailor on deck' at the office, he started working here last week.