I actually did have that in my original comment but it didn't survive an edit. Vehicles, vessels, countries and a few others seem to get a gender, but it's not actually a part of the language in the same sense as in Spanish, Italian, German, French, and others. It more seems to reflect a kind of personification (the nation as an entity becomes a she, same with a ship). That's distinct from the grammatical gender in other languages.

That's anthropomorphism, not grammatical gender.