Gents,

I found an interesting image of two US Army tugboats on 3 flatcars on the Wisconsin Maritime Museum's web archive. This is on the Ahnapee & Western Railway in Sturgeon Bay, WI in 1943. Hulls on the end cars, pilot houses on the center car.  I would assume that the openings in the deck would have been covered with canvas.  Could be a nice project for those little Sylvan tug kits.

https://wisconsinmaritime.pastperfectonline.com/photo/AC9F4214-546F-46BF-B409-355078807411 

from the collection: https://wisconsinmaritime.pastperfectonline.com/vocabulary 

Cheers,
Andy L
Wisconsin