I don't know of any but seem to remember seeing a model of one in the press some time last year. Anyone remember this?
In the N scale section about a year ago, a chap built his own container ship as was willing to share his plans with others. Unfortunately, the pickings are between few and none in the modeling commercial world for a container ship. I think I found one for around $175 American. Also Sylvan company, in Canada makes a great lakes container ship. I don't think that is the proper spelling. I think some one could start a cottage industry around container ships, and see going modern ships and make a modest living at it.
There is a place on eBay that sells a redy made HO container ship. THey have the Ore Carrier and the Liberty ship up now in the HO category. If I remember right it's called Burt Industries. I think the container ships were going for in the neighborhood of $450.
Check the posts in Modelintermodal on Yahoo groups: http://groups.yahoo.com/group/modelintermodal/?yguid=6443754 You can also do a search there.