Have you checked out Mod the Sims 2 really well? I know that you can download a ship at that site, but I haven't ever wanted it so I don't know if it requires particular expansion packs or not.
But there are also a lot of different "themed" clothing styles on that site as well.
Here's a link to the site:
You have to register though to be able to actually download anything. And, after you register and receive your confirmation email and go to log in to the site, if you don't click to "Always Remember Me" then you won't be able to download either.
It's free to register though and everything on the site is free as well. If you don't know how to download, unzip/un-rar and install custom content, then you should read this link first:
Also, here is a listing of lots of different sims 2 custom content:
· 1 decade ago