I saw a free Titanic model on a different site once. But it was of lower quality, and I don't remember where I saw it.
Edit: After check my bookmarks, here it is. There's a free patrol boat and landing craft there too, but I am not sure if the patrol boat is WWII-era.
Titanic:
http://www.turbosquid.com/FullPrevie....cfm/ID/125467
Patrol Boat:
http://www.turbosquid.com/FullPrevie....cfm/ID/219168
Landing Craft:
http://www.turbosquid.com/FullPrevie....cfm/ID/222609
EDIT AGAIN:
And here is another Titanic (better but incomplete):
http://www.turbosquid.com/FullPrevie....cfm/ID/291159