mashton:rkn - of course female, it's an old thing, started for ships, I think.
Yes but i always find it a bit odd ;)
Acutally thought i'd find out about it - doesn't seem like there is a clear origin but [this article](http://news.bbc.co.uk/1/hi/business/the_economy/138678.stm) has some suggestions, including:
"As long as ships of every size and type require lots of paint to look good they will be referred to as a 'she', at least by me."