He set sail from the seaport Bordeaux on the brig Pelerin as a pilotin, an apprentice officer.

他作为一名学徒军官， 乘坐双桅帆船 Pelerin 从波尔多海港起航。

In order to learn as a pilotin, many ship-maneuvering nuances normally handled only by the captain of the vessel are done by the apprentice officer.

作为一名领航员，为了学习，许多通常只有船长才能处理的船舶操纵的细微差别都由见习军官完成。