First version: 'What is the origin of referring to some nouns by "she" but never by "he"?' Fifth version: 'What is the origin of referring to some nouns by "she" but never by "he"?
Update:
* It applies (optionally) to most inanimate forms of transportation
Can I refer to internet Internet as "she"?
Update:
Well, I cannot comment, so it is my lucky day to put all eggs in one basket.
@Moshe & @psmears,
Why is ship referred to as woman though the latter brings misfortunes to it?'