A ship is a "she"?

Why is “ship” referred as “she” and not “it”?

It’s a way of personalizing a thing. A ship is often regarded as something unique, an entity that has its own character and maybe even soul.[YSaerTTEW443543]

TOEIC listening, photographs: An airport terminal[YSaerTTEW443543]

Aha!

Thank you, Torsten.