Curved and hollow ships are female in almost all languages, not only because of their curves and hollows, but also because they are craft--so to speak.
"Oh, Captain Tugwell, are you at work still?
Why, you really ought to have gone with the smacks.

But perhaps you sent your son instead.

I am so glad to see you! It is such nice company to hear you! I did not expect to be left alone, like this." "If you please, miss, it isn't father at all.

Father is gone with the fishing long ago.

It is only me, Daniel, if you please, miss." "No, Daniel, I am not pleased at all.