Hey Toes UP,
There are a few books written about your chosen subject here that you may enjoy (if you are not already aware of them). They are readily available on the used book market--Advanced Book Exchange, etc:
Tug of War by Duncan Harding
The author is delivering a ST tug to Hawaii
The Ordeal of Convoy NY 119
A tug and barge convoy heads for Europe late in the Fall during WW2
A Lekko publication with many pictures and stats on ST tugs
Great job on your model.